CN113416042A - Dry-mixed thin layer masonry mortar - Google Patents
Dry-mixed thin layer masonry mortar Download PDFInfo
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- CN113416042A CN113416042A CN202110800360.XA CN202110800360A CN113416042A CN 113416042 A CN113416042 A CN 113416042A CN 202110800360 A CN202110800360 A CN 202110800360A CN 113416042 A CN113416042 A CN 113416042A
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- parts
- heating
- mortar
- putting
- water
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 186
- 239000000835 fiber Substances 0.000 claims abstract description 86
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000002245 particle Substances 0.000 claims abstract description 71
- 238000002360 preparation method Methods 0.000 claims abstract description 65
- 239000004576 sand Substances 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 46
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 46
- 239000011435 rock Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000004113 Sepiolite Substances 0.000 claims abstract description 27
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 27
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 27
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 21
- 239000004917 carbon fiber Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000008394 flocculating agent Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 165
- 238000006243 chemical reaction Methods 0.000 claims description 130
- 239000000376 reactant Substances 0.000 claims description 95
- 238000004321 preservation Methods 0.000 claims description 92
- 239000013067 intermediate product Substances 0.000 claims description 90
- 239000000843 powder Substances 0.000 claims description 79
- 239000002994 raw material Substances 0.000 claims description 77
- 238000003756 stirring Methods 0.000 claims description 58
- 238000005245 sintering Methods 0.000 claims description 52
- 239000000203 mixture Substances 0.000 claims description 49
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 46
- 239000000243 solution Substances 0.000 claims description 46
- 235000019738 Limestone Nutrition 0.000 claims description 42
- 239000006028 limestone Substances 0.000 claims description 42
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 38
- 238000007906 compression Methods 0.000 claims description 35
- 230000006835 compression Effects 0.000 claims description 35
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 32
- 238000004140 cleaning Methods 0.000 claims description 28
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 28
- 239000005995 Aluminium silicate Substances 0.000 claims description 24
- 235000012211 aluminium silicate Nutrition 0.000 claims description 24
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 21
- 229920002472 Starch Polymers 0.000 claims description 20
- 238000007493 shaping process Methods 0.000 claims description 20
- 239000008107 starch Substances 0.000 claims description 20
- 235000019698 starch Nutrition 0.000 claims description 20
- 229920001938 Vegetable gum Polymers 0.000 claims description 18
- 239000011259 mixed solution Substances 0.000 claims description 18
- DOBIZWYVJFIYOV-UHFFFAOYSA-N 7-hydroxynaphthalene-1,3-disulfonic acid Chemical compound C1=C(S(O)(=O)=O)C=C(S(O)(=O)=O)C2=CC(O)=CC=C21 DOBIZWYVJFIYOV-UHFFFAOYSA-N 0.000 claims description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 16
- 239000002202 Polyethylene glycol Substances 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 16
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims description 16
- 239000003822 epoxy resin Substances 0.000 claims description 16
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 16
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 16
- 230000004048 modification Effects 0.000 claims description 16
- 238000012986 modification Methods 0.000 claims description 16
- 229920002432 poly(vinyl methyl ether) polymer Polymers 0.000 claims description 16
- 229920000647 polyepoxide Polymers 0.000 claims description 16
- 229920001223 polyethylene glycol Polymers 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 15
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 15
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 15
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 15
- 238000002791 soaking Methods 0.000 claims description 15
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 13
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 12
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 12
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 12
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- FGBJXOREULPLGL-UHFFFAOYSA-N ethyl cyanoacrylate Chemical compound CCOC(=O)C(=C)C#N FGBJXOREULPLGL-UHFFFAOYSA-N 0.000 claims description 12
- 229940053009 ethyl cyanoacrylate Drugs 0.000 claims description 12
- UPSIAUXDGWYOFJ-UHFFFAOYSA-N formaldehyde;furan Chemical compound O=C.C=1C=COC=1 UPSIAUXDGWYOFJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000010438 granite Substances 0.000 claims description 12
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 12
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 12
- 235000011152 sodium sulphate Nutrition 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 11
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims description 10
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 238000005550 wet granulation Methods 0.000 claims description 10
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 8
- 239000005751 Copper oxide Substances 0.000 claims description 8
- 229920003086 cellulose ether Polymers 0.000 claims description 8
- 229910000431 copper oxide Inorganic materials 0.000 claims description 8
- 239000010881 fly ash Substances 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- UJXFNIQSAHCTTA-UHFFFAOYSA-N 1-butylperoxyhexane Chemical compound CCCCCCOOCCCC UJXFNIQSAHCTTA-UHFFFAOYSA-N 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000011449 brick Substances 0.000 abstract description 5
- 239000000969 carrier Substances 0.000 abstract description 3
- 230000001788 irregular Effects 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 150000001721 carbon Chemical class 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 90
- 206010016807 Fluid retention Diseases 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 239000008188 pellet Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000000265 homogenisation Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/386—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/02—Cellulosic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
Abstract
The invention provides a preparation method of thin-layer dry-mixed mortar. The machine-made sand is made of pressure-resistant material balls and rock particles, the pressure-resistant material balls are spherical, so that the mortar has good workability and fluidity, and the crushed rock particles are irregular, so that the bonding performance of the mortar is improved. The water retention agent effectively reduces the loss of water, so that the mortar has excellent workability. The added sepiolite and the diatomite can absorb water and are used as carriers of the water-retaining agent to effectively cooperate with the components of the mortar, so that the bonding strength of the mortar is increased. After the water in the mortar is volatilized, the water-retaining agent is solidified into a special net-shaped structure, so that the bonding strength of the upper surface and the lower surface of the brick body is increased. And a flocculating agent is added to adjust the overall uniformity of the mortar, and meanwhile, the flocculating agent is added with modified carbon fibers and modified lotus root silk fibers, so that a grid structure can be formed in the mortar solidification process, and the mortar has freeze-thaw resistance.
Description
Technical Field
The invention relates to the field of building materials, in particular to dry-mixed thin layer masonry mortar.
Background
Masonry mortar is mortar obtained by bonding bricks, stones, building blocks and the like into masonry. It has the functions of adhesion, lining and force transmission and is an important component of the masonry. At present, dry-mixed masonry mortar is mainly prepared from cement, natural sand, an additive and other admixtures according to a certain proportion, machine-made sand has more internal pores, and impurities such as stone powder and the like generated in the preparation process are easy to mix into the sand, so that the bonding strength of the mortar is reduced in the use process, the addition of the machine-made sand into the dry-mixed masonry mortar can cause the increase of water demand of the mortar, the reduction of the consistency of the mortar, bleeding and the like, and the machine-made sand is less used in the dry-mixed mortar.
However, natural sand is a local resource, has the characteristics of uneven distribution, no regeneration in a short time, unsuitability for long-distance transportation and the like, the natural sand resource is nearly exhausted due to over exploitation in many areas of China, the natural sand is forbidden or limited to be exploited in many areas, the contradiction between supply and demand of sand for engineering construction is gradually highlighted, and the sustainable development of using machine-made sand instead of natural sand for dry-mixed masonry mortar is a green and feasible development trend. Aiming at the problems, the invention provides a preparation method of machine-made sand in thin-layer masonry sand mortar, so that the preparation method can meet the requirement of the cohesive force of the thin-layer masonry sand mortar. Simultaneously, also provides a preparation method of the high-efficiency water-retaining agent and a preparation method of the freeze-thaw resistant flocculant.
Disclosure of Invention
The invention aims to provide dry-mixed thin layer masonry mortar and a preparation method thereof.
The second purpose of the invention is to provide a preparation method of the machine-made sand in the dry-mixed thin-layer masonry mortar.
The third purpose of the invention is to provide a preparation method of the water retention agent in the dry-mixed thin-layer masonry mortar.
The fourth purpose of the invention is to provide a preparation method of the flocculant in the dry-mixed thin-layer masonry mortar.
The invention is realized by the following technical scheme:
a thin layer masonry mortar, wherein the mortar comprises the following raw materials: p.o42.5 cement: 200-250 parts of machine-made sand with 70-140 meshes: 700 parts of secondary fly ash: 20-40 parts of limestone powder: 30-60 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 1-3 parts of water-retaining agent and 2-4 parts of flocculating agent.
The raw materials are uniformly mixed by a double-shaft gravity-free stirrer through an intelligent automatic control system, and the mixture is placed in a bag for sealing, so that the thin-layer masonry mortar is obtained.
Wherein the machine-made sand is a mixture of 40-50 parts of rock crushing particles and 50-60 parts of pressure-resistant material balls.
The preparation process of the rock crushing particles comprises the following steps:
putting basalt, rhyolite, limestone and granite into a cleaning pool, cleaning, putting 50-60 parts of cleaned basalt, 30-40 parts of rhyolite, 40-50 parts of limestone and 15-20 parts of granite into a crusher, crushing into particles capable of passing through a 70-140-mesh sieve, putting the crushed particles into a flowing cleaning pool, and washing off powder generated in the crushing process.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 50-60 parts of the cleaned basalt, 40-50 parts of cobble, 30-40 parts of limestone and 45-55 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 70-80 parts of kaolin, 30-40 parts of nano silicon nitride crystals, 15-20 parts of a binder and 15-20 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 70-140-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at the heating rate of 7-10 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1200-1215 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to the room temperature, and placing the raw material balls b into a sealed tank for storage to obtain the finished product.
The sintering aid is a mixture of 5-7 parts of copper oxide, 10-12 parts of titanium dioxide and 7-10 parts of magnesium oxide.
The preparation process of the adhesive comprises the following steps:
putting 8-10 parts of butyl peroxy hexane, 7-10 parts of hexamethyldisilazane and 10-15 parts of N-N dimethylformamide into a reactor, adding the mixed solution, homogenizing, heating the homogenized solution to 90 ℃, and preserving heat for reaction for 6 hours to obtain the intermediate product; wherein the mixed solution is acetone: ethanol and a mixed solution with the volume ratio of 3: 2.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 25-35 parts of acrylamide and 15-20 parts of starch, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 1-3 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 16-22 parts of furan formaldehyde into 10-15 parts of N, N-methylene bisacrylamide and 5-8 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at 150 ℃ under the pressure of 1.0Mpa, and obtaining an intermediate product b after 3 hours;
3) putting 5-8 parts of intermediate product a and 10-12 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 15-20 parts of ethyl cyanoacrylate at a rate of 15-20 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) adding 15-20 parts of nano sepiolite powder, 7-15 parts of nano kieselguhr powder and 5-8 parts of kaolin into the intermediate product c, adding 2-3 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The preparation method of the flocculant comprises the following steps:
1) putting 7-10 parts of methoxy polyethylene glycol and 10-15 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 3-5 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2-3 parts of aluminum chloride and 3-4 parts of ferric chloride into the reactant a, adding 10-15 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1-2 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 15-20 parts of phenolic propane side chain type epoxy resin into 5-7 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and reacting for 5 hours in a heat preservation manner to obtain a reactant c;
4) modification of fibres
Placing 5-7 parts of vegetable gum into clear water, adding 5-8 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 1-3/min, stirring while heating, keeping the temperature for reaction for 30min, placing 5-8 parts of lotus root silk fiber into the clear water, soaking for 10min, adding 30-35 parts of carbon fiber, placing c5-10 parts of reactant into the clear water, heating to 90 ℃ at the speed of 5-7 ℃/min, keeping the temperature for reaction for 15min, and placing the mixture into an oven to be dried for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 12-16 parts of reactant b into 13-18 parts of modified fiber prepared in the step 4), adding 10-15 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The invention has the following advantages:
has the advantages that:
1) the masonry mortar plays a role in transferring load and is an important component of the masonry. The sand in the mortar plays an important role, and the sand serves as a framework of the mortar to bear the pressure of a building after the mortar is solidified. However, the natural sand resource is nearly exhausted due to over exploitation and the like, so the invention selects the machine-made sand as the framework of the mortar. The compression strength of the machine-made sand is reduced due to the small gaps generated in the crushing and other processes, so that the compression-resistant material balls and the rock particles are used as the machine-made sand, and the compression strength of the machine-made sand is improved. The compression-resistant material balls in the machine-made sand are spherical, so that the workability of the mortar is effectively improved, the prepared mortar has good workability and fluidity, and the crushed rock particles are irregular, so that the bonding property of the mortar is improved. The temperature rise rate and the sintering time of the compression-resistant material ball are controlled through a pre-sintering process, so that crystals in the raw material ball are crystallized to the maximum extent, the compression strength of the raw material ball is improved, and the water absorption of the compression-resistant material ball is reduced. In the preparation process of the machine-made sand, copper oxide, titanium dioxide and magnesium oxide are added as sintering aids, so that the density of the compression-resistant material balls is improved, the porosity inside the balls is reduced, and the compression strength of the sand is greatly improved. The compression-resistant material balls and the rock crushing particles are matched with each other, so that the compression strength and the bonding strength of the machine-made sand are effectively improved, and the compression strength of the masonry mortar is improved.
2) Because the thickness of the thin layer masonry mortar is less than 5mm, an efficient water retaining agent is needed to maintain the moisture in the mortar, and ineffective bonding between brick bodies caused by too fast volatilization of the moisture before the mortar is solidified can not occur. The water-retaining agent has high-efficiency water-retaining rate, effectively reduces the loss of water, and ensures that the mortar has excellent workability in the construction process. Sepiolite and diatomite added into the water-retaining agent have the characteristic of absorbing water, and are used as carriers of the water-retaining agent to be effectively matched with components of mortar, so that the bonding strength of the mortar is increased, the viscosity of the kaolin is high, and the kaolin can be effectively matched with cement in the mortar while being used as the carriers, so that the viscosity of the mortar is increased. After the water in the mortar is volatilized, the water-retaining agent is solidified into a special net-shaped structure, so that the viscosity among buildings is increased, and the bonding strength of the upper surface and the lower surface of a brick body is increased. The water-retaining agent has the function of a thickening agent during the construction process, so that dry-mixed mortar can be rapidly stirred into usable mortar when in use, and the water-retaining agent is of a high-molecular polymer type, so that a building has certain slip resistance. The water-retaining agent contains high water absorption sodium polyacrylate, is a high polymer with a certain crosslinking degree, can quickly absorb water which is hundreds of times larger than the self weight to form gel, has strong water absorption capacity, and ensures the time in the mortar construction process.
3) Because the compression-resistant material balls of the machine-made sand have high compression strength but low surface bonding performance, and the prepared water-retaining agent has extremely high water-retaining rate, the compatibility with the whole mortar is poor in an environment with a large amount of water in the mortar, and even in cold northern areas in winter, the thin-layer masonry mortar is very easy to freeze, so that the compression strength of a building is greatly reduced, and even the safety coefficient of the building is reduced. Therefore, the inventor thinks that the coagulation rate of the mortar is improved by adding the flocculating agent so as to reduce the occurrence of the frost crack phenomenon, but the inventor discovers that the addition of the conventional flocculating agent can greatly reduce the strength of the mortar although the coagulation rate of the mortar is improved, the mass loss rate and the compressive strength loss rate of the mortar in a freeze-thaw resistance experiment do not meet the national standard, the building body brittleness after the mortar is used is increased, and the safety coefficient is reduced. Therefore, the inventor researches the flocculating agent, adopts reasonable raw material proportion, and introduces modified carbon fiber and modified lotus root silk fiber into the raw material, so that the mortar can form a grid structure in the solidification process, the mortar has freeze-thaw resistance, the mass loss rate and the compressive strength loss rate of the mortar in freeze-thaw resistance experiments can be reduced, and the safety of the building body is improved. And because the modified fiber is added in the prepared flocculant, the capillary phenomenon of the fiber can be utilized, so that the modified fiber can effectively bond other substances in the mortar and has excellent water absorption capacity, the bonding effect of the mortar is effectively improved, the modified fiber can be quickly and primarily bonded between brick bodies after the mortar is used, and the modified fiber can be quickly and quickly coagulated after the mortar is hardened.
4) The flocculant reduces the pollution to the environment by using the modified vegetable gum and the modified vegetable fiber, and simultaneously complements the lotus root silk fiber and the carbon fiber, thereby further improving the bonding property among the fibers and the mechanical property of the product.
Detailed description of the invention
Example 1
A thin layer masonry mortar, wherein the mortar comprises the following raw materials: p.o42.5 cement: 225 parts of 100-mesh machine-made sand: 700 parts of secondary fly ash: 30 parts of limestone powder: 45 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 2 parts of water-retaining agent and 3 parts of flocculating agent.
The raw materials are uniformly mixed by a double-shaft gravity-free stirrer through an intelligent automatic control system, and the mixture is placed in a bag for sealing, so that the thin-layer masonry mortar is obtained.
Wherein the machine-made sand is a mixture of 45 parts of rock crushing particles and 55 parts of pressure-resistant material balls.
The preparation process of the rock crushing particles comprises the following steps:
putting basalt, rhyolite, limestone and granite into a cleaning pool, cleaning, putting 55 parts of cleaned basalt, 35 parts of rhyolite, 45 parts of limestone and 18 parts of granite into a crusher, crushing into particles capable of passing through a 100-mesh sieve, putting the crushed particles into a flowing cleaning pool, and washing off powder generated in the crushing process.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 55 parts of the cleaned basalt, 45 parts of cobble, 35 parts of limestone and 50 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 75 parts of kaolin, 35 parts of nano silicon nitride crystals, 18 parts of a binder and 18 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 100-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at a heating rate of 9 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1208 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls into a sealed tank for storage to obtain the finished product.
The sintering aid is a mixture of 8 parts of copper oxide, 11 parts of titanium dioxide and 9 parts of magnesium oxide.
The preparation process of the adhesive comprises the following steps:
placing 9 parts of butyl peroxy hexane, 9 parts of hexamethyldisilazane and 13 parts of N-N dimethylformamide into a reactor, adding the mixed solution, firstly carrying out homogenization treatment, heating the homogenized solution to 90 ℃, and carrying out heat preservation reaction for 6 hours to obtain the intermediate product; wherein the mixed solution is acetone: ethanol and a mixed solution with the volume ratio of 3: 2.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 30 parts of acrylamide, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 13 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 7 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 18 parts of ethyl cyanoacrylate at the rate of 18 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 18 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
Example 2
A thin layer masonry mortar, wherein the mortar comprises the following raw materials: p.o42.5 cement: 200 parts of 70-mesh machine-made sand: 700 parts of secondary fly ash: 40 parts of limestone powder: 30 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 1 part of water-retaining agent and 4 parts of flocculating agent.
The raw materials are uniformly mixed by a double-shaft gravity-free stirrer through an intelligent automatic control system, and the mixture is placed in a bag for sealing, so that the thin-layer masonry mortar is obtained.
Wherein the machine-made sand is a mixture of 40 parts of rock crushing particles and 60 parts of pressure-resistant material balls.
The preparation process of the rock crushing particles comprises the following steps:
putting basalt, rhyolite, limestone and granite into a cleaning pool, cleaning, putting 50 parts of cleaned basalt, 40 parts of rhyolite, 50 parts of limestone and 15 parts of granite into a crusher, crushing into particles capable of passing through a 70-mesh sieve, putting the crushed particles into a flowing cleaning pool, and washing off powder generated in the crushing process.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 50 parts of the cleaned basalt, 50 parts of cobble, 30 parts of limestone and 55 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 70 parts of kaolin, 40 parts of nano silicon nitride crystals, 15 parts of a binder and 20 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 70-140-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at a heating rate of 10 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1215 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls b into a sealed tank body for storage to obtain the finished product.
The sintering aid is a mixture of 7 parts of copper oxide, 10 parts of titanium dioxide and 10 parts of magnesium oxide.
The preparation process of the adhesive comprises the following steps:
putting 10 parts of butyl peroxy hexane, 10 parts of hexamethyldisilazane and 10 parts of N-N dimethylformamide into a reactor, adding the mixed solution, firstly carrying out homogenization treatment, heating the homogenized solution to 90 ℃, and carrying out heat preservation reaction for 6 hours to obtain the intermediate product; wherein the mixed solution is acetone: ethanol and a mixed solution with the volume ratio of 3: 2.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 25 parts of acrylamide into 20 parts of starch, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 16 parts of furan formaldehyde into 15 parts of N, N-methylene bisacrylamide and 5 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 8 parts of intermediate product a and 10 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 15 parts of ethyl cyanoacrylate at the rate of 20 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 20 parts of nano sepiolite powder, 7 parts of nano kieselguhr powder and 8 parts of kaolin into the intermediate product c, adding 2 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The preparation method of the flocculant comprises the following steps:
1) putting 7 parts of methoxy polyethylene glycol and 15 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 3 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2 parts of aluminum chloride and 4 parts of ferric chloride into the reactant a, adding 15 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 15 parts of phenolic propane side chain type epoxy resin into 7 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Placing 7 parts of vegetable gum into clear water, adding 5 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 3/min, stirring while heating, performing heat preservation reaction for 30min, placing 5 parts of lotus root silk fiber into the water, soaking for 10min, adding 35 parts of carbon fiber, placing c5 parts of reactant, heating to 90 ℃ at the speed of 7 ℃/min, performing heat preservation reaction for 15min, and placing the mixture into an oven to be dried for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 12 parts of reactant b into 18 parts of modified fiber prepared in the step 4), adding 10 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
Example 3
A thin layer masonry mortar, wherein the mortar comprises the following raw materials: p.o42.5 cement: 250 parts of 140-mesh machine-made sand: 700 parts of secondary fly ash: 20 parts of limestone powder: 60 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 3 parts of water-retaining agent and 2 parts of flocculating agent.
The raw materials are uniformly mixed by a double-shaft gravity-free stirrer through an intelligent automatic control system, and the mixture is placed in a bag for sealing, so that the thin-layer masonry mortar is obtained.
The machine-made sand is a mixture of 50 parts of rock crushing particles and 50 parts of pressure-resistant material balls.
The preparation process of the rock crushing particles comprises the following steps:
putting basalt, rhyolite, limestone and granite into a cleaning pool, cleaning, putting 60 parts of cleaned basalt, 30 parts of rhyolite, 40 parts of limestone and 20 parts of granite into a crusher, crushing into particles capable of passing through a 140-mesh sieve, putting the crushed particles into a flowing cleaning pool, and washing off powder generated in the crushing process.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 60 parts of the cleaned basalt, 40 parts of cobble, 40 parts of limestone and 55 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 80 parts of kaolin, 30 parts of nano silicon nitride crystals, 20 parts of a binder and 15 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 70-140-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at a heating rate of 7 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1200 ℃, the sintering time is 3.5 hours, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls into a sealed tank for storage to obtain the finished product.
The sintering aid is a mixture of 5 parts of copper oxide, 12 parts of titanium dioxide and 7 parts of magnesium oxide.
The preparation process of the adhesive comprises the following steps:
putting 8 parts of butyl peroxy hexane, 7 parts of hexamethyldisilazane and 15 parts of N-N dimethylformamide into a reactor, adding the mixed solution, firstly carrying out homogenization treatment, heating the homogenized solution to 90 ℃, and carrying out heat preservation reaction for 6 hours to obtain the intermediate product; wherein the mixed solution is acetone: ethanol and a mixed solution with the volume ratio of 3: 2.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 35 parts of acrylamide into 15 parts of starch, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 1 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 22 parts of furan formaldehyde into 10 parts of N, N-methylene bisacrylamide and 8 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 5 parts of intermediate product a and 12 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 20 parts of ethyl cyanoacrylate at the rate of 20 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) adding 15 parts of nano sepiolite powder, 15 parts of nano kieselguhr powder and 5 parts of kaolin into the intermediate product c, adding 3 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The preparation method of the flocculant comprises the following steps:
1) putting 7 parts of methoxy polyethylene glycol and 10 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 5 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 3 parts of aluminum chloride and 3 parts of ferric chloride into the reactant a, adding 15 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 20 parts of phenolic propane side chain type epoxy resin into 5 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Placing 5 parts of vegetable gum into clear water, adding 8 parts of carboxymethyl cellulose into the clear water, slowly heating to 50 ℃ at the speed of 3/min, stirring while heating, keeping the temperature for reaction for 30min, placing 8 parts of lotus root silk fiber into the clear water, soaking for 10min, then adding 30 parts of carbon fiber, placing c10 parts of reactant, heating to 90 ℃ at the speed of 5 ℃/min, keeping the temperature for reaction for 15min, and then placing the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 16 parts of reactant b into 13 parts of modified fiber prepared in the step 4), adding 15 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
Comparative example 1
A thin layer masonry mortar.
A thin layer masonry mortar, wherein the mortar comprises the following raw materials: p.o42.5 cement: 225 parts of 100-mesh machine-made sand: 700 parts of secondary fly ash: 30 parts of limestone powder: 45 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 5 parts of water-retaining agent and 3 parts of flocculating agent.
The rest is the same as example 1.
Comparative example 2
A thin layer masonry mortar.
A thin layer masonry mortar, wherein the mortar comprises the following raw materials: p.o42.5 cement: 225 parts of 100-mesh machine-made sand: 700 parts of secondary fly ash: 30 parts of limestone powder: 45 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 2 parts of water-retaining agent and 1 part of flocculating agent.
The rest is the same as example 1.
Comparative example 3
A thin layer masonry mortar.
Wherein the machine-made sand is a mixture of 45 parts of rock crushing particles and 40 parts of pressure-resistant material balls.
The rest is the same as example 1.
Comparative example 4
A thin layer masonry mortar.
Wherein the machine-made sand is rock crushing particles.
The rest is the same as example 1.
Comparative example 5
A thin layer masonry mortar.
Wherein the machine-made sand is a pressure-resistant material ball.
The rest is the same as example 1.
Comparative example 6
A thin layer masonry mortar.
A thin layer masonry mortar, wherein the mortar comprises the following raw materials: p.o42.5 cement: 225 parts of 100-mesh natural sand: 700 parts of secondary fly ash: 30 parts of limestone powder: 45 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 2 parts of water-retaining agent and 3 parts of flocculating agent.
The rest is the same as example 1.
Comparative example 7
A thin layer masonry mortar.
The method comprises the steps of putting basalt, rhyolite, limestone and granite into a cleaning pool, cleaning, putting 30 parts of the cleaned basalt, 35 parts of the rhyolite, 45 parts of the limestone and 18 parts of the granite into a crusher, crushing into particles capable of passing through a 100-mesh sieve, putting the crushed particles into a flowing cleaning pool, and washing off powder generated in the crushing process.
The rest is the same as example 1.
Comparative example 8
A thin layer masonry mortar.
The pressure-resistant material balls are prepared from 55 parts of cleaned basalt, 35 parts of cobbles, 35 parts of limestone and 50 parts of sandstone.
The rest is the same as example 1.
Comparative example 9
A thin layer masonry mortar.
The pressure-resistant material balls are prepared from 55 parts of cleaned basalt, 45 parts of cobbles, 45 parts of limestone and 50 parts of sandstone.
The rest is the same as example 1.
Comparative example 10
A thin layer masonry mortar.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 55 parts of the cleaned basalt, 45 parts of cobble, 35 parts of limestone and 50 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 75 parts of kaolin, 35 parts of nano silicon nitride crystals, 13 parts of a binder and 18 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 100-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at a heating rate of 9 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1208 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls into a sealed tank for storage to obtain the finished product.
The rest is the same as example 1.
Comparative example 11
A thin layer masonry mortar.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 55 parts of the cleaned basalt, 45 parts of cobble, 35 parts of limestone and 50 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 75 parts of kaolin, 35 parts of nano silicon nitride crystals, 18 parts of a binder and 13 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 100-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at a heating rate of 9 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1208 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls into a sealed tank for storage to obtain the finished product.
The rest is the same as example 1.
Comparative example 12
A thin layer masonry mortar.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 55 parts of the cleaned basalt, 45 parts of cobble, 35 parts of limestone and 50 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 75 parts of kaolin, 35 parts of nano silicon nitride crystals, 18 parts of a binder and 18 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 100-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, and directly placing the raw material balls in a kiln at 600 ℃ for presintering for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1208 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls into a sealed tank for storage to obtain the finished product.
The rest is the same as example 1.
Comparative example 13
A thin layer masonry mortar.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 55 parts of the cleaned basalt, 45 parts of cobble, 35 parts of limestone and 50 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 75 parts of kaolin, 35 parts of nano silicon nitride crystals, 18 parts of a binder and 18 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 100-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at a heating rate of 9 ℃/min for 25min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1208 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls into a sealed tank for storage to obtain the finished product.
The rest is the same as example 1.
Comparative example 14
A thin layer masonry mortar.
The preparation process of the compression-resistant material balls comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 55 parts of the cleaned basalt, 45 parts of cobble, 35 parts of limestone and 50 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 75 parts of kaolin, 35 parts of nano silicon nitride crystals, 18 parts of a binder and 18 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 100-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at a heating rate of 9 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1150 ℃, the sintering time is 3.5 hours, then slowly cooling until the temperature is reduced to room temperature, and placing the raw material balls into a sealed tank for storage to obtain the finished product.
The rest is the same as example 1.
Comparative example 15
A thin layer masonry mortar.
The sintering aid in the pressure-resistant material ball is a mixture of 6 parts of copper oxide, 16 parts of titanium dioxide and 8 parts of magnesium oxide.
The rest is the same as example 1.
Comparative example 16
A thin layer masonry mortar.
The sintering aid in the pressure-resistant material ball is a mixture of 6 parts of copper oxide, 11 parts of titanium dioxide and 5 parts of magnesium oxide.
The rest is the same as example 1.
Comparative example 17
A thin layer masonry mortar.
The preparation process of the binder in the compression-resistant material balls comprises the following steps:
placing 12 parts of butyl peroxy hexane, 9 parts of hexamethyldisilazane and 13 parts of N-N dimethylformamide into a reactor, adding the mixed solution, firstly carrying out homogenization treatment, heating the homogenized solution to 90 ℃, and carrying out heat preservation reaction for 6 hours to obtain the intermediate product; wherein the mixed solution is acetone: ethanol and a mixed solution with the volume ratio of 3: 2.
The rest is the same as example 1.
Comparative example 18
A thin layer masonry mortar.
The preparation process of the binder in the compression-resistant material balls comprises the following steps:
butyl peroxy hexane 9 parts, hexamethyldisilazane 9 parts, N-N dimethylformamide 13 parts, to which acetone: the volume ratio of ethanol is 3: 2.
The rest is the same as example 1.
Comparative example 19
A thin layer masonry mortar.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 20 parts of acrylamide, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 13 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 7 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 18 parts of ethyl cyanoacrylate at the rate of 18 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 18 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The rest is the same as example 1.
Comparative example 20
A thin layer masonry mortar.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 30 parts of acrylamide, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 18 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 7 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 18 parts of ethyl cyanoacrylate at the rate of 18 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 18 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The rest is the same as example 1.
Comparative example 21
A thin layer masonry mortar.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 30 parts of acrylamide, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 13 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 7 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, adding 18 parts of ethyl cyanoacrylate, slightly shaking the reactor after dripping, homogenizing, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 18 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The rest is the same as example 1.
Comparative example 22
A thin layer masonry mortar.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 30 parts of acrylamide, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 13 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 10 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 18 parts of ethyl cyanoacrylate at the rate of 18 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 18 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The rest is the same as example 1.
Comparative example 23
A thin layer masonry mortar.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 30 parts of acrylamide, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 13 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 7 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 18 parts of ethyl cyanoacrylate at the rate of 18 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 13 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The rest is the same as example 1.
Comparative example 24
A thin layer masonry mortar.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 30 parts of acrylamide, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 2 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 13 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 7 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 18 parts of ethyl cyanoacrylate at the rate of 18 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 18 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 100 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The rest is the same as example 1.
Comparative example 25
A thin layer masonry mortar.
The preparation process of the water-retaining agent comprises the following steps:
1) adding 18 parts of starch into 30 parts of acrylamide, adding concentrated sulfuric acid, rapidly heating to 120 ℃, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 19 parts of furan formaldehyde into 13 parts of N, N-methylene bisacrylamide and 7 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at the pressure of 1.0Mpa and the temperature of 150 ℃ for 3 hours to obtain an intermediate product b;
3) placing 7 parts of intermediate product a and 11 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 18 parts of ethyl cyanoacrylate at the rate of 18 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) and adding 18 parts of nano sepiolite powder, 12 parts of nano kieselguhr powder and 7 parts of kaolin into the intermediate product c, adding 2.5 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
The rest is the same as example 1.
Comparative example 26
A thin layer masonry mortar.
The water-retaining agent is a Holland Evereia 301 water-retaining agent.
The rest is the same as example 1.
Comparative example 27
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 18 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 28
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, quickly heating to 150 ℃, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 29
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 30
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 8 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 31
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 13 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 32
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 80 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 33
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 9 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the mixture into an oven to be dried for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 34
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, putting c8 parts of reactant into the water, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, putting the mixture into an oven, and drying for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 35
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, quickly heating to 50 ℃, heating while stirring, after heat preservation reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant into the water, heating to 90 ℃ at the speed of 6 ℃/min, after heat preservation reaction for 15min, putting the lotus root silk fiber into an oven, and drying for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 14 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 36
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) modification of fibres
Putting 6 parts of vegetable gum into clear water, adding 7 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 2/min, stirring while heating, keeping the temperature for reaction for 30min, putting 7 parts of lotus root silk fiber into the water, soaking for 10min, then adding 33 parts of carbon fiber, putting c8 parts of reactant, heating to 90 ℃ at the speed of 6 ℃/min, keeping the temperature for reaction for 15min, and then putting the lotus root silk fiber into an oven to bake for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 19 parts of reactant b into 15 parts of modified fiber prepared in the step 4), adding 13 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
The rest is the same as example 1.
Comparative example 37
A thin layer masonry mortar.
The preparation method of the flocculant comprises the following steps:
1) putting 8 parts of methoxy polyethylene glycol and 13 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 4 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2.5 parts of aluminum chloride and 3.5 parts of ferric chloride into the reactant a, adding 13 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1.5 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 18 parts of phenolic propane side chain type epoxy resin into 6 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and carrying out heat preservation reaction for 5 hours to obtain a reactant c;
4) 3 parts of lotus root silk fiber, 12 parts of carbon fiber, 14 parts of reactant b, 13 parts of calcium lignosulphonate and clear water are added, the temperature is controlled not to exceed 40 ℃, and the lotus root silk fiber and the carbon fiber are uniformly stirred to obtain the composite material.
The rest is the same as example 1.
Comparative example 38
A thin layer masonry mortar.
The mortar is a permanent coagulation DPS flocculant.
The rest is the same as example 1.
Comparative example 39
A thin layer masonry mortar.
The mortar is common thin layer masonry mortar which is commonly sold on the market.
The rest is the same as example 1.
Experimental example 1 compressive strength of thin masonry mortar
Testing the compressive strength and shrinkage rate of the mortar after 28 days according to the test requirements in GB/T25181-2019 premixed mortar, selecting 3 samples in each embodiment or comparative example, and recording the result by selecting the minimum data of the compressive strength, wherein the specific result is shown in Table 1;
TABLE 1 compressive Strength of thin masonry mortar
It can be seen from Table 1 that the compressive strengths of examples 1-3 were all above 24MPa, and that the compressive strength of the thin masonry mortar far exceeded that of the ordinary thin masonry mortar of comparative example 39 under the combined action of the compression balls and the crushed rock particles. The proportion of the water-retaining agent and the flocculating agent in the mortar is changed in the comparative examples 1-2, so that the compressive strength is obviously reduced; the proportion of the machine-made sand in the mortar is changed in comparative examples 3-5, the highest compressive strength of the mortar is only 17.5Mpa, which is far lower than that of examples 1-3, even the comparative example 3 is lower than that of the common thin-layer masonry mortar; comparative example 6 used natural sand having a compressive strength lower than that of examples 1-3, and even lower than that of the compressive pellet of comparative example 5. In comparative example 7, the formulation of the rock crushing particles in the machine-made sand was changed, and in comparative examples 8 to 11, the formulation of the pressure-resistant pellets in the machine-made sand was changed, so that the compressive strengths thereof were all over 17 Mpa. Comparative examples 12 to 14 change the sintering process of the compression-resistant pellets, which results in the internal structure of the compression-resistant pellets being crystalline with strong compression resistance, so that the overall compression strength of the mortar is reduced; the formula of the sintering aid for the compression-resistant pellets is changed in the comparative examples 15-16, and the formula and the preparation process of the binder for the compression-resistant pellets are changed in the comparative examples 17-18, so that the hardness of the compression-resistant pellets is reduced, and the strength of the prepared mortar is reduced; the comparative example 38 adopts a common flocculating agent, and cannot be matched with the machine-made sand and the water-retaining agent prepared in the invention, so that the overall compressive strength of the mortar is greatly reduced.
Experimental example 2 Water Retention Rate of Water-retaining agent
Testing the water retention rate of the thin-layer masonry mortar, the mortar prepared in the examples and the comparative examples is tested and analyzed according to the testing method and the requirements in the national standard CB/T25181-2019 premixed mortar, and the specific data is recorded in the table 2;
table 2 water retention test of thin masonry mortar
As can be seen from the data in Table 2, the water retention of examples 1-3 can reach more than 99.5%; comparative examples 19 to 20 change the formulation ratio in the water-retaining agent, resulting in a decrease in the effective water-retaining component of the prepared water-retaining agent, resulting in a decrease in the water-retaining rate of the mortar; comparative examples 21 to 22, and comparative examples 24 to 25 change the preparation process of the water-retaining agent, which results in the change of the molecular structure of the water-retaining agent and the reduction of the water retention rate of the mortar; comparative example 23 the sepiolite component in the water-retaining agent is reduced, the carrier of the water-retaining agent is reduced, and simultaneously the water-absorbable component is reduced, so that the water retention rate of the mortar is reduced; comparative example 26 adopts a common water-retaining agent, but cannot be matched with the pressure-resistant material balls and the flocculating agent prepared in the invention, so that the overall water retention rate of the mortar is only 80.9 percent; the selection of the conventional flocculant in comparative example 38 failed to match the water retention agent prepared in the present invention, resulting in a water retention of only 75.9%.
Experimental example 3 Freeze/thaw resistance experiment of mortar
The thin layer masonry mortar prepared in the examples and the comparative examples is subjected to an anti-freezing test sample by a test method in national standard GB/T25181-2019 premixed mortar. After 30 times of freeze-thaw cycles, testing the compressive strength loss rate and the quality loss rate of the prepared thin-layer masonry mortar, and finally recording the data in table 3;
TABLE 3 Freeze/thaw resistance test of thin masonry mortar
As can be seen from Table 3, the compressive strength loss rate and the mass loss rate of the examples 1 to 3 both accord with the national standard, the compressive strength loss rate does not exceed 10 percent, the mass loss rate is only 0.5 percent at most, and the mortar has excellent freeze-thaw resistance which is far superior to the common thin-layer masonry mortar of the comparative example 39; comparative example 27, comparative examples 29 to 30 and comparative example 36 change the formula of the flocculating agent, so that the flocculating agent cannot effectively bond the effective components in the mortar, and the compressive strength loss rate and the quality loss rate of the prepared mortar are far higher than those of the mortar prepared in examples 1 to 3; comparative example 28, comparative example 32 and comparative example 35 change the process of the flocculant preparation process, so that the effective groups of the flocculant are not completely reacted, and the compressive strength loss rate and the quality loss rate of the flocculant are far greater than those of the flocculant prepared in the examples 1 to 3; the addition of resin is reduced in the comparative example 31, the addition of vegetable gum is increased in the comparative example 33, and carbon fiber is not added in the comparative example 34, which all can cause the freeze-thaw resistance of the mortar to be reduced; comparative example 37 the fibers were not modified, and the fibers were easily broken during mortar setting, resulting in a decrease in the freeze-thaw resistance of the mortar; the common flocculant is selected in the comparative example 38, and the flocculant can not effectively bond the mortar together, so that the freeze-thaw resistance of the mortar is not in accordance with the national standard, and even the freeze-thaw resistance of the mortar is lower than that of the common thin-layer masonry mortar in the comparative example 38.
Experimental example 4 shrinkage ratio of mortar
The mortar prepared in the examples and the comparative examples is tested for shrinkage after 28 days according to the test requirements in the national standard GB/T25181-2019 'ready-mixed mortar', 3 samples are selected in each example or comparative example, when the result is recorded, the maximum data of the compressive strength is selected and recorded, and the specific result is shown in Table 4;
TABLE 4 shrinkage of thin masonry mortar
As can be seen from the data recorded in Table 4, the shrinkage rates of examples 1 to 3 were only 0.02% at the maximum, which is much smaller than the shrinkage rate of 0.20% of the ordinary thin layer masonry mortar of comparative example 39; comparative example 28, comparative example 32 and comparative example 35 change the process of the flocculant preparation process, and the prepared flocculant molecules cannot effectively solidify the mortar, so that the shrinkage rate of the prepared thin layer masonry mortar is far greater than that of the thin layer masonry mortar in the examples 1-3; comparative example 27, comparative examples 29 to 30 and comparative example 36 change the formula of the flocculant, reduce the effective components in the flocculant, and can not bond the mortar, so that the shrinkage of the prepared mortar is far larger than that of examples 1 to 3, even part of the mortar prepared by the comparative examples is larger than that of comparative examples 37 to 38; in the comparative example 31, the addition of resin is reduced, the addition of vegetable gum is increased in the comparative example 33, and carbon fiber is not added in the comparative example 34, which all result in the increase of the shrinkage rate of the mortar, even the shrinkage rate of the mortar prepared in the comparative example 31 is as high as 0.31%; comparative example 37 No lotus root silk fiber and carbon fiber modification, resulting in the fiber tensile properties decrease, so the mortar shrinkage rate is as high as 0.37%; in the comparative example 38, a common flocculant is selected, and the flocculant cannot be matched with the machine-made sand and the water-retaining agent prepared by the method, so that the shrinkage rate of the mortar is as high as 0.49%.
Claims (8)
1. The thin layer masonry mortar is characterized in that: the raw materials comprise: p.o42.5 cement 99.: 200-250 parts of machine-made sand with 70-140 meshes: 700 parts of secondary fly ash: 20-40 parts of limestone powder: 30-60 parts of cellulose ether: 2.5 parts of starch ether: 0.5 part, 1-3 parts of water-retaining agent and 2-4 parts of flocculating agent;
the raw materials are uniformly mixed by a double-shaft gravity-free stirrer through an intelligent automatic control system, and the mixture is placed in a bag for sealing, so that the thin-layer masonry mortar is obtained.
2. The thin layer masonry mortar of claim 1, wherein: the machine-made sand is a mixture of 40-50 parts of rock crushing particles and 50-60 parts of pressure-resistant material balls.
3. The thin layer masonry mortar of claim 2, wherein: the preparation process of the rock crushing particles comprises the following steps:
putting basalt, rhyolite, limestone and granite into a cleaning pool, cleaning, putting 50-60 parts of cleaned basalt, 30-40 parts of rhyolite, 40-50 parts of limestone and 15-20 parts of granite into a crusher, crushing into particles capable of passing through a 70-140-mesh sieve, putting the crushed particles into a flowing cleaning pool, and washing off powder generated in the crushing process.
4. The thin layer masonry mortar of claim 2, wherein: the preparation process of the compression-resistant material ball comprises the following steps:
1) putting basalt, cobble, limestone and sandstone into a clean water tank for cleaning, and washing off soil impurities on the surface;
2) putting 50-60 parts of the cleaned basalt, 40-50 parts of cobble, 30-40 parts of limestone and 45-55 parts of sandstone into a hard rock impact crusher for primary crushing, and crushing the rock into particles a with the particle size of 50 mm;
3) putting the particles a prepared in the step 2) into a grinder to be ground into powder which can pass through a 200-mesh sieve, and putting the powder into a drying box to be dried to obtain powder b;
4) adding the powder b into a granulator, adding 70-80 parts of kaolin, 30-40 parts of nano silicon nitride crystals, 15-20 parts of a binder and 15-20 parts of a sintering aid, and carrying out continuous wet granulation to enable the prepared particles to pass through a 70-140-mesh sieve, thus obtaining raw material balls a;
5) placing the raw material balls prepared in the step 4) in a shade place for airing and shaping, placing for 24h for shaping, placing the raw material balls in a kiln for presintering, and heating to 600 ℃ at the heating rate of 7-10 ℃/min for 15min to obtain raw material balls b;
6) quickly placing the raw material balls b prepared in the step 5) into a rotary kiln for sintering again, wherein the sintering temperature is 1200-1215 ℃, the sintering time is 3.5h, then slowly cooling until the temperature is reduced to the room temperature, and placing the raw material balls b into a sealed tank for storage to obtain the finished product.
5. The thin layer masonry mortar of claim 4, wherein: the sintering aid is a mixture of 5-7 parts of copper oxide, 10-12 parts of titanium dioxide and 7-10 parts of magnesium oxide.
6. The thin layer masonry mortar of claim 4, wherein: the preparation process of the adhesive comprises the following steps:
putting 8-10 parts of butyl peroxy hexane, 7-10 parts of hexamethyldisilazane and 10-15 parts of N-N dimethylformamide into a reactor, adding the mixed solution, homogenizing, heating the homogenized solution to 90 ℃, and preserving heat for reaction for 6 hours to obtain the intermediate product; wherein the mixed solution is acetone: ethanol and a mixed solution with the volume ratio of 3: 2.
7. The thin layer masonry mortar of claim 1, wherein: the preparation process of the water-retaining agent comprises the following steps:
1) adding 25-35 parts of acrylamide and 15-20 parts of starch, adding concentrated sulfuric acid, heating to 120 ℃ at the speed of 1-3 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain an intermediate product a;
2) adding 16-22 parts of furan formaldehyde into 10-15 parts of N, N-methylene bisacrylamide and 5-8 parts of sodium sulfate, putting the mixture into a high-pressure reaction kettle, adding an acetone solution, reacting at 150 ℃ under the pressure of 1.0Mpa, and obtaining an intermediate product b after 3 hours;
3) putting 5-8 parts of intermediate product a and 10-12 parts of intermediate product b into a reactor, heating to 135 ℃, dropwise adding 15-20 parts of ethyl cyanoacrylate at a rate of 15-20 drops/min, after dropwise adding, slightly shaking the reactor to make the mixture uniform, and carrying out heat preservation reaction for 30min to obtain intermediate product c;
4) adding 15-20 parts of nano sepiolite powder, 7-15 parts of nano kieselguhr powder and 5-8 parts of kaolin into the intermediate product c, adding 2-3 parts of the intermediate product a, adding a methyl acetate solution, heating to 85 ℃, stirring while heating, and carrying out heat preservation reaction for 3 hours to obtain the nano sepiolite/diatomite composite material.
8. The thin layer masonry mortar of claim 1, wherein: the preparation method of the flocculant comprises the following steps:
1) putting 7-10 parts of methoxy polyethylene glycol and 10-15 parts of 2-naphthol-6, 8-disulfonic acid into a reactor, adding an ethanol solution into the reactor, heating to 150 ℃ at the speed of 3-5 ℃/min, and carrying out heat preservation reaction for 6 hours to obtain a reactant a;
2) adding 2-3 parts of aluminum chloride and 3-4 parts of ferric chloride into the reactant a, adding 10-15 parts of dimethyl diallyl ammonium chloride, slowly stirring, simultaneously heating to 70 ℃ at the speed of 1-2 ℃/min, and carrying out heat preservation reaction for 3 hours to obtain a reactant b;
3) adding 15-20 parts of phenolic propane side chain type epoxy resin into 5-7 parts of polyvinyl methyl ether, adding concentrated sulfuric acid, heating to 90 ℃, and reacting for 5 hours in a heat preservation manner to obtain a reactant c;
4) modification of fibres
Placing 5-7 parts of vegetable gum into clear water, adding 5-8 parts of carboxymethyl cellulose, slowly heating to 50 ℃ at the speed of 1-3/min, stirring while heating, keeping the temperature for reaction for 30min, placing 5-8 parts of lotus root silk fiber into the clear water, soaking for 10min, adding 30-35 parts of carbon fiber, placing c5-10 parts of reactant into the clear water, heating to 90 ℃ at the speed of 5-7 ℃/min, keeping the temperature for reaction for 15min, and placing the mixture into an oven to be dried for 5h at the temperature of 80 ℃ to obtain the lotus root silk fiber;
5) adding 12-16 parts of reactant b into 13-18 parts of modified fiber prepared in the step 4), adding 10-15 parts of calcium lignosulphonate, adding clear water, controlling the temperature to be not more than 40 ℃, and uniformly stirring to obtain the modified fiber.
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