CN104140230A - Aerated concrete dry-blended plastering mortar and preparing method thereof - Google Patents
Aerated concrete dry-blended plastering mortar and preparing method thereof Download PDFInfo
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- CN104140230A CN104140230A CN201410365678.XA CN201410365678A CN104140230A CN 104140230 A CN104140230 A CN 104140230A CN 201410365678 A CN201410365678 A CN 201410365678A CN 104140230 A CN104140230 A CN 104140230A
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 101
- 239000004567 concrete Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 60
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000010455 vermiculite Substances 0.000 claims abstract description 28
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 28
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 28
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 24
- 239000004743 Polypropylene Substances 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 22
- -1 polypropylene Polymers 0.000 claims abstract description 22
- 229920001155 polypropylene Polymers 0.000 claims abstract description 22
- 239000002893 slag Substances 0.000 claims abstract description 22
- 235000013312 flour Nutrition 0.000 claims abstract description 21
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 20
- 235000009566 rice Nutrition 0.000 claims abstract description 20
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 18
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 18
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 18
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920002472 Starch Polymers 0.000 claims abstract description 17
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims abstract description 17
- 229930182490 saponin Natural products 0.000 claims abstract description 17
- 150000007949 saponins Chemical class 0.000 claims abstract description 17
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 17
- 239000008107 starch Substances 0.000 claims abstract description 17
- 235000019698 starch Nutrition 0.000 claims abstract description 17
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000661 sodium alginate Substances 0.000 claims abstract description 15
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 15
- 244000269722 Thea sinensis Species 0.000 claims abstract 4
- 239000000203 mixture Substances 0.000 claims description 21
- 239000010881 fly ash Substances 0.000 claims description 20
- 241000209094 Oryza Species 0.000 claims description 19
- 239000004816 latex Substances 0.000 claims description 17
- 229920000126 latex Polymers 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 150000002170 ethers Chemical class 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 239000003469 silicate cement Substances 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 235000011837 pasties Nutrition 0.000 claims description 2
- 238000009776 industrial production Methods 0.000 abstract description 3
- 239000011398 Portland cement Substances 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 abstract 1
- 229920002752 Konjac Polymers 0.000 abstract 1
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 239000010883 coal ash Substances 0.000 abstract 1
- 239000000176 sodium gluconate Substances 0.000 abstract 1
- 229940005574 sodium gluconate Drugs 0.000 abstract 1
- 235000012207 sodium gluconate Nutrition 0.000 abstract 1
- 241001122767 Theaceae Species 0.000 description 13
- 238000005336 cracking Methods 0.000 description 9
- 239000004568 cement Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000011505 plaster Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 150000008130 triterpenoid saponins Chemical class 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses aerated concrete dry-blended plastering mortar which is composed of, by mass, 20%-30% of portland cement, 10%-20% of coal ash, 5%-10% of slag powder, 0.3%-0.5% of starch ether, 1%-3% of kieselguhr, 3%-5% of sodium alginate, 0.3%-0.5% of hydroxypropyl methyl cellulose ether, 0.5%-1% of VAE redispersible powder, 0.05%-0.1% of polypropylene fiber, 5%-10% of performance modifier and the balance building fine sand, wherein the performance modifier is composed of, by mass, 1%-3% of tea saponin, 0.5%-1% of konjaku flour, 5%-10% of graphene, 10%-20% of vermiculite powder, 5%-10% of sodium gluconate and the balance glutinous rice flour. The aerated concrete dry-blended plastering mortar is scientific and reasonable in formula, low in cost, good in workability, water-retaining property, crack resistance and caking property, low in shrinking percentage and broad in application prospect. The invention further provides a method for preparing the aerated concrete dry-blended plastering mortar. According to the method, the number of processing steps is small and operability is high. The method is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to a kind of motar, especially relate to a kind of gas concrete dry-mixed plastering mortar and preparation method thereof.
Background technology
Gas concrete has light weight, good heat preservation performance, the feature such as energy-conservation, is the novel wall material of national encourage growth.But obturator foramen micro-hole structural, the water suction time length of gas concrete are long, poor with the adhesive property of mortar, coat of plaster hollowing, cracking phenomena are very general, have become the common quality defect of China's plastering engineering.Therefore increasing substantially motar of air-entrained concrete water-retentivity, application property, cohesiveness and splitting resistance is the key of improving, improve aerated concrete wall construction quality, simultaneously for changing as early as possible the backward state of China's mortar, promote industrialized level and state of the art that mortar is produced, make mortar development include Sustainable development track in, must change the form of production of mortar, mortar is produced from on-the-spot mixing and changed into batch production production, develop dry-mixed mortar.
Application publication number CN102701675A, the Chinese patent of Shen Qing Publication day 2012.10.03 discloses the one dry-mix of plastering, and comprises following raw materials in part by weight: 32.5 composite Portland cement 11-25 parts, dry river sand 69-83 part, flyash 5-8 part, 0.07 part of hydroxypropyl methyl cellulose ether, 1.2 parts of black talcs, calcium formiate powder 0-0.4 part, triterpenoid saponin powder 0-0.04 part.The weak point of this dry-mix of plastering is: (one) river sand too high levels, and cohesive strength is poor, easily dry linting and hollowing; (2) the each component in this mortar is easily separated and produce bleed and bleeding, affects normally condensing and hardening of mortar; (3) water retention property of this mortar is poor, and moisture loss is fast, causes mortar strength not high.
Summary of the invention
The present invention is that the dry-mixed plastering mortar in order to solve prior art easily produces the problems such as cracking, hollowing even come off while plastering for gas concrete metope, provide a kind of scientific formulation reasonable, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, the gas concrete dry-mixed plastering mortar that shrinking percentage is low.
The present invention also provides a kind of preparation method of gas concrete dry-mixed plastering mortar, and this preparation method's processing step is simple, workable, is applicable to large-scale industrial production.
To achieve these goals, the present invention is by the following technical solutions:
A kind of gas concrete dry-mixed plastering mortar, its component by following quality percentage composition forms: 20～30% silicate cements, 10～20% flyash, 5～10% slag powders, 0.3～0.5% starch ethers, 1～3% diatomite, 3～5% sodium alginates, 0.3～0.5% hydroxypropyl methyl cellulose ether, 0.5～1%VAE redispersable latex powder, 0.05～0.1% polypropylene fibre, 5～10% performance improvers, surplus is building fine sand, wherein said performance improver is made up of the component of following quality percentage composition: 1～3% tea saponin, 0.5～1% Rhizoma amorphophalli powder, 5～10% Graphenes, 10～20% vermiculite powers, 5～10% Sunmorl N 60Ss, surplus is sticky rice flour.Mesosilicic acid salt cement of the present invention is gelinite, slag powders and the aggregate of building fine sand formation mortar, in the present invention, mix flyash and replace cement with cost-saving, in addition, flyash also helps the raising of mobility and the water-retentivity of mortar, and if fly ash content exceedes 20%, tension, the cohesive strength of mortar can significantly reduce, and therefore the add-on of flyash is controlled at 10～20%, starch ethers can reduce the vertical flow process degree of fresh mortar, can greatly improve the workability of mortar, diatomite self is porous mass, and specific surface area is larger, and between structure, have adsorptive power-OH key, thereby therefore each component of adsorbable mortar inside makes the more closely knit intensity of improving mortar of mortar, sodium alginate has very strong lock water-based, after making motar be smeared on aerated concrete wall can after stop moisture to be absorbed fast by body of wall, thereby make the hydrated cementitious in mortar more abundant, effectively suppress the cracking phenomena that motar causes greatly due to aerated concrete wall water-intake rate, hydroxypropyl methyl cellulose ether has enough water retention capacities, can prevent the excessive vaporization of moisture and the water suction of basic unit and ftractures and reduce the intensity of mortar, and can impel the even fusion of gelling material and mortar particle, improves the workability of mortar, VAE redispersable latex powder itself contains tensio-active agent, can improve the workability of mortar, reduce the wet density of mortar simultaneously, also can increase the folding strength of mortar, and can improve the water resistance of the mortar after sclerosis, the most important thing is that VAE redispersable latex powder can dehydration in mortar hardening process, form polymer film structure and cover mortar particle surface and filled the space in mortar, while making mortar hardening be subject to convergent force, do not produce stress concentration, reduce cracking, and this membrane structure also has toughness and elasticity, with after mortar hardening of cement, act synergistically, improve the performance of mortar, polypropylene fibre has toughness reinforcing, effect of prestressed significantly.The present invention has also designed a kind of performance improver in addition, this performance improver can improve the performance of mortar greatly, tea saponin in performance improver is conducive to the multiviscosisty of mortar, the surface that simultaneously can be adsorbed on pulp particle forms one deck hydration shell, reduce the magnetism between mortar particle, in the time stirring, can reduce the frictional force between particle, mortar is more easily stirred, and the component in mortar is more easily dispersed, be conducive to improve the homogeneity of mortar, the viscosity of Rhizoma amorphophalli powder is very large, can greatly improve the adhesive property of mortar, can thoroughly solve the poor problem of bonding force between traditional mortar and gas concrete metope, Rhizoma amorphophalli powder has good expansion filling properties simultaneously, can compensate the volumetric shrinkage of mortar, avoid coat of plaster to cause finish plaster cracking because dry shrinkage stress is excessive, Graphene has good heat conductivility, can not only greatly improve the adhesion property of mortar, can also greatly improve the heat conductivility of mortar, can effectively avoid mortar internal and external temperature in process of setting inconsistent and cause thermal stress, cause the Large Area Cracking on floated coat surface and come off, but Graphene can not effectively disperse in mortar, can reunite, therefore the present invention is by having added vermiculite power to address this problem, vermiculite power has good cationic exchange and adsorptivity, can improve the structure of mortar, improve the water retention property of mortar, the most important thing is, vermiculite power can be used as the carrier of Graphene in performance improver, firmly adsorb Graphene, avoid Graphene monomer to reunite, so that Graphene can be uniformly dispersed in mortar, after Sunmorl N 60S infiltrates, can suppress cement granules cohesion or be attracted to the cenotype particle surface that hydrated cementitious forms, delay the formation of aquation and the structure of cement, extend the time of coagulation of mortar, can extend Use Limitation, thereby can meet the requirement of longer engineering time, but Sunmorl N 60S can make to remain in system more free water simultaneously, increase the mobility of mortar, make the cohesiveness of mortar poor, can affect its workability, therefore in the present invention, add sticky rice flour to address this problem, sticky rice flour viscosity is high, can improve the cohesiveness of mortar, and improve the adhesive property of mortar, simultaneously sticky rice flour can also be avoided in mortar each component not separate and produce bleed and bleeding, ensure normally condensing and hardening of mortar, and improve mortar strength.The present invention has developed the special dry-mixed plastering mortar of a kind of gas concrete metope according to building site practical application and lot of experiments, gas concrete dry-mixed plastering mortar scientific formulation of the present invention is reasonable, cost is low, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, shrinking percentage is low, and the common quality defect such as cracking, hollowing having existed while effectively having overcome traditional mortar for gas concrete, has broad application prospects.
As preferably, the particle diameter of described slag powders is 3～10 μ m.
As preferably, described building fine sand fineness modulus is 1～2.
As preferably, described polypropylene fibre equivalent diameter is 10～30 μ m, and length is 8～12mm.
As preferably, the particle diameter of described vermiculite power is 1～1.5mm.
A preparation method for gas concrete dry-mixed plastering mortar, comprises the following steps:
(1) take after tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, after being mixed, Graphene and vermiculite power add ethanol, grind 5～10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver.In ethanol, vermiculite power and Graphene are ground, to ensure that Graphene can be uniformly dispersed and to be evenly attached to vermiculite power surface, to ensure the consistence of mortar.
(2) take silicate cement by proportioning, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, after performance improver and building fine sand, by silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, after mixing, performance improver and building fine sand toast 30～60min at 40～50 DEG C, grind again 10～30min, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.Sticky rice flour is moisture absorption caking very easily, toasts 30～60min to remove moisture at 40～50 DEG C, ensures the shatter value of dry-mixed mortar of the present invention, improves keeping quality, and is conducive to each component grinding distribution after baking, can further improve the homogeneity of dry-mixed mortar of the present invention.
As preferably, the add-on of ethanol in step (1) so that Graphene and vermiculite power be as the criterion in the pasty state.
Therefore, the present invention has following beneficial effect:
(1) developed the special dry-mixed plastering mortar of a kind of gas concrete metope according to building site practical application and lot of experiments, gas concrete dry-mixed plastering mortar scientific formulation of the present invention is reasonable, cost is low, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, shrinking percentage is low, and the common quality defect such as cracking, hollowing having existed while effectively having overcome traditional mortar for gas concrete, has broad application prospects;
(2) provide a kind of preparation method of gas concrete dry-mixed plastering mortar, this preparation method's processing step is simple, workable, is applicable to large-scale industrial production.
Embodiment
Below by embodiment, the present invention will be further described.
In the present invention, if not refer in particular to, all per-cent is weight unit, and all devices and raw material all can be buied from market or the industry is conventional, and the method in following embodiment, if no special instructions, is this area ordinary method.
Embodiment 1
A kind of gas concrete dry-mixed plastering mortar, component by following quality percentage composition forms: 22% silicate cement, 15% flyash, 7% slag powders, 0.4% starch ethers, 2% diatomite, 4% sodium alginate, 0.4% hydroxypropyl methyl cellulose ether, 0.6%VAE redispersable latex powder, 0.08% polypropylene fibre, 7% performance improver, surplus is building fine sand, in mortar, the particle diameter of slag powders is 5 μ m, building fine sand fineness modulus is 1.5, polypropylene fibre equivalent diameter is 12 μ m, length is 10mm, performance improver is made up of the component of following quality percentage composition: 2% tea saponin, 0.6% Rhizoma amorphophalli powder, 6% Graphene, 12% vermiculite power, 7% Sunmorl N 60S, surplus is sticky rice flour, the particle diameter of vermiculite power is 1.2mm.
The preparation method of this gas concrete dry-mixed plastering mortar is as follows:
(1) take after tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, after being mixed, Graphene and vermiculite power add ethanol, grind 7min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) take after silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand by proportioning, after being mixed, silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, performance improver and building fine sand toast 35min at 45 DEG C, grind again 15min, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
Embodiment 2
A kind of gas concrete dry-mixed plastering mortar, component by following quality percentage composition forms: 20% silicate cement, 10% flyash, 5% slag powders, 0.3% starch ethers, 1% diatomite, 3% sodium alginate, 0.3% hydroxypropyl methyl cellulose ether, 0.5%VAE redispersable latex powder, 0.05% polypropylene fibre, 5% performance improver, surplus is building fine sand, in mortar, the particle diameter of slag powders is 3 μ m, building fine sand fineness modulus is 1, polypropylene fibre equivalent diameter is 10 μ m, length is 8mm, performance improver is made up of the component of following quality percentage composition: 1% tea saponin, 0.5% Rhizoma amorphophalli powder, 5% Graphene, 10% vermiculite power, 5% Sunmorl N 60S, surplus is sticky rice flour, the particle diameter of vermiculite power is 1mm.
The preparation method of this gas concrete dry-mixed plastering mortar is as follows:
(1) take after tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, after being mixed, Graphene and vermiculite power add ethanol, grind 5～10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) take after silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand by proportioning, after being mixed, silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, performance improver and building fine sand toast 60min at 40 DEG C, grind again 10min, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
Embodiment 3
A kind of gas concrete dry-mixed plastering mortar, component by following quality percentage composition forms: 30% silicate cement, 20% flyash, 10% slag powders, 0.5% starch ethers, 3% diatomite, 5% sodium alginate, 0.5% hydroxypropyl methyl cellulose ether, 1%VAE redispersable latex powder, 0.1% polypropylene fibre, 10% performance improver, surplus is building fine sand, in mortar, the particle diameter of slag powders is 10 μ m, building fine sand fineness modulus is 2, polypropylene fibre equivalent diameter is 30 μ m, length is 12mm, performance improver is made up of the component of following quality percentage composition: 3% tea saponin, 1% Rhizoma amorphophalli powder, 10% Graphene, 20% vermiculite power, 10% Sunmorl N 60S, surplus is sticky rice flour, the particle diameter of vermiculite power is 1.5mm.
The preparation method of this gas concrete dry-mixed plastering mortar is as follows:
(1) take after tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, after being mixed, Graphene and vermiculite power add ethanol, grind 10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) take after silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand by proportioning, after being mixed, silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, performance improver and building fine sand toast 30min at 50 DEG C, grind again 30min, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
The performance of the gas concrete dry-mixed plastering mortar obtaining by the present invention is as follows:
| Project | Performance index | JC890-2001 requirement |
| Denseness/mm | 70～85 | —— |
| Bleeding rate/% | 1～1.2 | —— |
| Delamination degree/mm | 5～8 | ≤20 |
| Dry density/(Kg/m 3) | 1620～1750 | ≤1800 |
| Ultimate compression strength/Mpa | 9～10.3 | ≥5 |
| Folding strength/ultimate compression strength | 0.31～0.38 | —— |
| Tensile strength/Mpa | 1.7～1.92 | —— |
| With gas concrete cohesive strength/Mpa | 0.51～0.63 | ≥0.15 |
| Shear bonding strength/Mpa | 1～1.1 | —— |
| Shrinking percentage/(mm/m) | 0.32～0.58 | ≤1.1 |
| Energy-to-break/(J/m 2) | 53.1～62.3 | —— |
| Largest deformation amount/mm | 2～3 | —— |
As can be known from the above table, mortar performance of the present invention meets the requirement that JC890-2001 specifies completely, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, shrinking percentage is low, the common quality defect such as cracking, hollowing having existed while effectively having overcome traditional mortar for gas concrete, has broad application prospects.
Claims (7)
1. a gas concrete dry-mixed plastering mortar, it is characterized in that, its component by following quality percentage composition forms: 20～30% silicate cements, 10～20% flyash, 5～10% slag powders, 0.3～0.5% starch ethers, 1～3% diatomite, 3～5% sodium alginates, 0.3～0.5% hydroxypropyl methyl cellulose ether, 0.5～1%VAE redispersable latex powder, 0.05～0.1% polypropylene fibre, 5～10% performance improvers, surplus is building fine sand, wherein said performance improver is made up of the component of following quality percentage composition: 1～3% tea saponin, 0.5～1% Rhizoma amorphophalli powder, 5～10% Graphenes, 10～20% vermiculite powers, 5～10% Sunmorl N 60Ss, surplus is sticky rice flour.
2. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, the particle diameter of described slag powders is 3～10 μ m.
3. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, described building fine sand fineness modulus is 1～2.
4. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, described polypropylene fibre equivalent diameter is 10～30 μ m, and length is 8～12mm.
5. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, the particle diameter of described vermiculite power is 1～1.5mm.
6. a preparation method for gas concrete dry-mixed plastering mortar as claimed in claim 1, is characterized in that, comprises the following steps:
(1) take after tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, after being mixed, Graphene and vermiculite power add ethanol, grind 5～10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) take silicate cement by proportioning, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, after performance improver and building fine sand, by silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, after mixing, performance improver and building fine sand toast 30～60min at 40～50 DEG C, grind again 10～30min, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
7. preparation method according to claim 6, is characterized in that, the add-on of ethanol in step (1) so that Graphene and vermiculite power be as the criterion in the pasty state.
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Effective date of registration: 20151029 Address after: 325000, Wenzhou, Zhejiang province Ouhai Road Bridge Industrial Zone, Nanhui Road, building 49, south-east Applicant after: WENZHOU CHUANGXIN MORTAR TECHNOLOGY CO., LTD. Address before: 322105 Zhejiang city of Dongyang Province Song Town sokdam Village No. 1 Applicant before: Yu Quanfeng |
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Denomination of invention: The invention relates to an aerated concrete dry mixed plastering mortar and a preparation method thereof Effective date of registration: 20211221 Granted publication date: 20160120 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: WENZHOU INNOVATIVE NEW MATERIALS LIMITED BY SHARE Ltd. Registration number: Y2021110000096 |