CN116639905B - Additive for mortar and preparation method thereof - Google Patents
Additive for mortar and preparation method thereof Download PDFInfo
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- CN116639905B CN116639905B CN202310767174.XA CN202310767174A CN116639905B CN 116639905 B CN116639905 B CN 116639905B CN 202310767174 A CN202310767174 A CN 202310767174A CN 116639905 B CN116639905 B CN 116639905B
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- mortar
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- sodium alginate
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 120
- 239000000654 additive Substances 0.000 title claims abstract description 35
- 230000000996 additive effect Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 33
- 239000000243 solution Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- 239000012460 protein solution Substances 0.000 claims abstract description 36
- 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 34
- 239000000661 sodium alginate Substances 0.000 claims abstract description 34
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 34
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 25
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 24
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 230000000887 hydrating effect Effects 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical group CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 108010046377 Whey Proteins Proteins 0.000 claims description 6
- 102000007544 Whey Proteins Human genes 0.000 claims description 6
- 235000021119 whey protein Nutrition 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 4
- 229920003086 cellulose ether Polymers 0.000 claims description 4
- 239000008107 starch Substances 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 2
- BHHGXPLMPWCGHP-UHFFFAOYSA-N Phenethylamine Chemical compound NCCC1=CC=CC=C1 BHHGXPLMPWCGHP-UHFFFAOYSA-N 0.000 claims description 2
- 235000013871 bee wax Nutrition 0.000 claims description 2
- 239000012166 beeswax Substances 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 2
- 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 description 2
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004200 microcrystalline wax Substances 0.000 claims description 2
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 18
- 230000000052 comparative effect Effects 0.000 description 23
- 238000003756 stirring Methods 0.000 description 16
- 239000002131 composite material Substances 0.000 description 15
- 239000002245 particle Substances 0.000 description 13
- 239000004568 cement Substances 0.000 description 12
- 238000009472 formulation Methods 0.000 description 11
- 238000013329 compounding Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 125000001165 hydrophobic group Chemical group 0.000 description 4
- 229920006254 polymer film Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000051 modifying effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000002195 synergetic effect Effects 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
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of mortar, and particularly relates to an additive for mortar and a preparation method thereof. The additive for mortar comprises the following components: thermoplastic resin, protein solution, modified silicon dioxide, sodium alginate solution, polycarboxylate water reducer, air entraining agent, water retention agent, coating agent, graphene-based material, EVA and compound solution. The preparation method comprises the following steps: dissolving sodium alginate in deionized water to obtain sodium alginate solution; hydrating the protein solution to obtain a hydrated protein solution, mixing the hydrated protein solution with a sodium alginate solution, and homogenizing to obtain a compound solution; adding a silane coupling agent, an organic solvent and silicon dioxide into a solvent, mixing, performing ultrasonic dispersion, refluxing and washing to obtain modified silicon dioxide; the components are mixed in water according to the weight parts to obtain the additive for mortar. The invention can reduce the negative influence of powder on the performance of mortar, reduce the limitation of additives, improve the stability of mortar and have good compatibility among materials.
Description
Technical Field
The invention belongs to the technical field of mortar, and particularly relates to an additive for mortar and a preparation method thereof.
Background
In order to increase the usage amount of bulk cement, ensure the quality of building engineering, improve the modernization level of building construction, realize comprehensive utilization of resources and promote civilized construction, stirring mortar in urban construction sites has been banned by regulations, and the use of ready-mixed mortar is required to adapt to the development needs of new situations.
According to the specification of GB/T25181-2010, ready-mixed mortar refers to wet-mixed mortar or dry-mixed mortar produced by a professional production plant, wherein the wet-mixed mortar is usually mixed by cement, fine aggregate, mineral admixture, additive and water according to a certain proportion, and the mixture is transported to a using place after being metered and stirred at a stirring station and used in a specified time.
The dry-mixed mortar is a mixture which is formed by metering and mixing cement, dry aggregate or powder, additives and other components determined according to the performance in a certain proportion in a professional production factory, and water or matched components are added in a specified proportion at a use place for mixing.
Since mortar is usually doped with powder or micropowder, such as fly ash, gypsum powder, etc., these powders can have a negative effect on the composite properties of ready-mixed mortar, such as: the patent with publication No. CN113698128A mentions that the carbon existing in the fly ash is easy to adsorb the air entraining agent in the mortar additive, thereby reducing the air content of the mortar and further reducing the frost resistance of the mortar; after water is added and stirred, cement in the mortar can form a flocculation structure, 10% -30% of water is wrapped among cement particles by the flocculation structure, fluidity of the mortar is reduced, an operator generally adds a water reducing agent to improve the situation, but powder can adsorb the water reducing agent, and thus fluidity of the mortar is reduced; in addition, the compatibility of the additive and the powder material and the compatibility between the additive and the additive can influence the overall performance of the mortar.
Therefore, we try to reduce the negative effect of the powder on the mortar performance, reduce the limitation of the additive, improve the stability of the mortar, and simultaneously consider good compatibility between materials.
Disclosure of Invention
The invention aims to provide the additive for the mortar and the preparation method thereof, which reduce the negative influence of powder on the performance of the mortar, reduce the limitation of the additive, improve the stability of the mortar and simultaneously consider good compatibility among materials.
The additive for the mortar comprises the following components in parts by weight:
40 to 70 parts of thermoplastic resin, 0 to 11 parts of protein solution, 0 to 20 parts of modified silicon dioxide, 0 to 30 parts of sodium alginate solution, 5 to 20 parts of polycarboxylate water reducer, 1 to 40 parts of air entraining agent, 1 to 12 parts of water-retaining agent, 0 to 11 parts of coating agent, 0 to 10 parts of graphene-based material, 1 to 5 parts of EVA and 0 to 25 parts of compound solution,
the compound solution is a mixture of the protein solution and the sodium alginate solution.
By adopting the technical scheme, the EVA can form emulsion in the mortar, so that a polymer film structure is formed in the mortar to improve the damage resistance of the mortar.
Preferably, the thermoplastic resin is a powdery thermoplastic resin, and the thermoplastic resin includes at least one of PVC and rubber.
By adopting the technical scheme, the thermoplastic resin can assist particles in mortar, plays a plasticizing role, can play a role in skeleton support in mortar, provides a 'depending' space for the additive, and further comprises a polycarboxylate water reducer which can reduce the water demand of the mortar.
Preferably, the water reducing agent is a polycarboxylate water reducing agent comprising at least one of PHEA, PAM, PMAH.
Preferably, the air entraining agent is sodium hexadecyl aryl sulfonate.
By adopting the technical scheme, the air entraining agent molecules are provided with the hydrophilic groups and the hydrophobic groups, when the air entraining agent is added into the mortar, the hydrophilic groups of the air entraining agent molecules are adsorbed with cement particles, and the hydrophobic groups are connected with the tiny bubbles and are uniformly distributed in the mortar, so that the early hydration process of the cement is delayed, the water retention performance of the mortar is improved, the consistency loss rate is reduced, and meanwhile, the tiny bubbles can play a role in lubrication, and the pumpability and sprayability of the mortar are improved.
Preferably, the graphene-based material comprises at least one of graphene and graphene oxide; the coating agent comprises at least one of beeswax and microcrystalline wax.
By adopting the technical scheme, the coating agent not only can play a role in lubricating in mortar, but also can protect products of other additives in the system.
Preferably, the water-retaining agent comprises at least one of cellulose ether and starch ether.
Preferably, the cellulose ether comprises at least one of hydroxyethyl methyl cellulose ether and hydroxypropyl methyl cellulose ether; the starch ether is CMS.
Preferably, the protein solution is a whey protein isolate solution.
Another object of the present application is to provide a method for preparing the admixture for mortar, comprising the steps of,
(1) Dissolving the sodium alginate in deionized water to obtain a sodium alginate solution;
(2) Hydrating a protein solution to obtain a hydrated protein solution, and mixing and homogenizing the hydrated protein solution and the sodium alginate solution obtained in the step (1) to obtain a compound solution;
(3) Adding a silane coupling agent, an organic solvent and silicon dioxide into a solvent, mixing, performing ultrasonic dispersion, refluxing and washing to obtain the modified silicon dioxide;
(4) And (3) adding the thermoplastic resin, the protein solution, the modified silicon dioxide obtained in the step (3), the sodium alginate solution obtained in the step (1), the polycarboxylate water reducer, the air entraining agent, the water retaining agent, the coating agent, the graphene-based material, the EVA and the compound solution obtained in the step (2) into water according to parts by weight, and mixing to obtain the additive for the mortar.
Preferably, the silane coupling agent comprises at least one of methyltrimethoxysilane and KH-560, the organic solvent is triethylamine, and the solvent comprises at least one of toluene and ethanol.
By adopting the technical scheme, the sodium alginate can improve the interfacial adsorption performance of protein, the rheological property of an interfacial adsorption film and the network structure of a continuous phase, the sodium alginate and the hydrated protein solution can form a composite solution, the system of the composite solution is stable, one part of the composite solution can adsorb powder or micro powder in agglomerated mortar, the other part of the composite solution can also protect the products of other additives in the system, such as hydrophilic groups of an air entraining agent can be adsorbed with cement particles, micro bubbles and hydrophobic groups can be coated by composite solution molecules, the water retention performance of mortar can be improved, the consistency loss rate can be reduced by a single air entraining agent, and the comprehensive performance of mortar can be further improved by adding the composite solution; the water-retaining agent not only wraps solid particles in the mortar, such as cement particles, and forms a lubricating film on the surfaces of the solid particles, but also can be slowly released in the mortar to ensure that the water in the mortar is not easy to run off, and in the application, the water-retaining agent can be compounded with graphene-based materials, so that the bonding force of an interface is increased, and the strength of the mortar is improved; in addition, the compound solution formed by the sodium alginate and the hydrated protein solution and the compound ligand formed by the water-retaining agent and the graphene-based material can also improve the continuity of the polymer film formed by EVA.
The beneficial effects of the invention are as follows:
(1) The method can reduce the negative influence of the powder on the performance of the mortar, reduce the limitation of the additive, improve the stability of the mortar, and simultaneously give consideration to good compatibility among materials, and specifically comprises the following steps: 1) The sodium alginate and the hydrated protein solution can form a composite solution, the system of the composite solution is stable, one part of the composite solution can adsorb powder or micro powder in the agglomerated mortar, the other part of the composite solution can also protect products of other additives in the system, for example, hydrophilic groups of air entraining agents can be adsorbed with cement particles, micro bubbles and hydrophobic groups can be coated by composite solution molecules, the water retention property of the mortar can be improved by a single air entraining agent, the consistency loss rate can be reduced, and the comprehensive property of the mortar can be further improved by adding the composite solution; 2) The water-retaining agent not only wraps solid particles in the mortar, such as cement particles, and forms a lubricating film on the surfaces of the solid particles, but also can be slowly released in the mortar to ensure that the water in the mortar is not easy to run off, and in the application, the water-retaining agent can be compounded with graphene-based materials, so that the bonding force of an interface is increased, and the strength of the mortar is improved; 3) EVA can form a polymer film structure in the mortar by forming emulsion, so that the capability of the mortar for resisting damage is improved, and the continuity of the polymer film formed by EVA can be improved by a composite solution formed by sodium alginate and a hydrated protein solution and a compound formed by a water-retaining agent and a graphene-based material; 4) The single modified silicon dioxide can be adsorbed on solid particles in the mortar to form stable emulsion, so that the fluidity of the mortar is improved, and the composite solution formed by sodium alginate and hydrated protein solution is combined with the modified silicon dioxide to further improve the interfacial tension of the mortar and improve the comprehensive performance of the mortar; 5) The polycarboxylate water reducer can reduce the water demand of mortar, and single polycarboxylate water reducer itself has plasticization, certain dispersion and air entraining effect, and in this application, polycarboxylate water reducer can cooperate other components, such as cooperation thermoplastic resin strengthens plasticization ability, cooperation air entraining agent strengthens air entraining ability, cooperation modified silica, sodium alginate, protein solution improves the dispersion.
(2) The formula of the mortar is flexible, components can be changed according to actual demands, the mortar comprises 40-70 parts of thermoplastic resin, 0-11 parts of protein solution, 0-20 parts of modified silicon dioxide, 0-30 parts of sodium alginate solution, 5-20 parts of polycarboxylate water reducer, 1-40 parts of air entraining agent, 1-12 parts of water retaining agent, 0-11 parts of coating agent, 0-10 parts of graphene-based material, 1-5 parts of EVA and 0-25 parts of compound solution, wherein the thermoplastic resin is necessary, the thermoplastic resin can assist particles in the mortar to play a plasticizing role, and can play a role of framework support in the mortar, the existence of the polycarboxylate water reducer, the air entraining agent, the water retaining agent and the EVA can ensure better basic performance of the mortar, and according to the actual demands, the addition of the protein solution, the modified silicon dioxide, the sodium alginate solution, the coating agent, the graphene-based material and the compound solution can play a synergistic role, and the compatibility with other components is good, and rejection is not generated.
The method can reduce the negative influence of the powder on the performance of the mortar, reduce the limitation of the additive, improve the stability of the mortar and simultaneously give consideration to good compatibility between materials.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Unless otherwise indicated, all reagents used in the examples were readily available from commercial companies, and all parts indicated in the examples are parts by weight.
The protein solutions, modified silica, sodium alginate solutions used in examples 1-7 were prepared as follows:
(1) Preparation of protein solution: dissolving whey protein isolate in ionized water, stirring in a stirrer for 60min to obtain whey protein isolate solution with concentration of 2-5wt%, namely protein solution.
(2) Sodium alginate is dissolved in deionized water and stirred in a stirrer for 60min to obtain sodium alginate solution with the concentration of 2-5 wt%.
(3) Preparation of the compound solution: dissolving whey protein isolate powder in deionized water, stirring in a stirrer for 60min to obtain whey protein isolate solution with concentration of 2-5wt%, namely protein solution, and stirring the protein solution overnight to obtain hydrated protein solution; dissolving sodium alginate in deionized water, and stirring in a stirrer for 60min to obtain sodium alginate solution with the concentration of 2-5 wt%; mixing and stirring the hydrated protein solution and the sodium alginate solution for 6 hours, heating in a water bath at 85 ℃, cooling to room temperature to obtain a sodium alginate-protein compound, and homogenizing at 20000rpm for 3-10 minutes to obtain a compound solution;
(4) Preparation of modified silica: adding a silane coupling agent, an organic solvent and silicon dioxide into a solvent, uniformly mixing, performing ultrasonic dispersion for 30-40 min, refluxing for 4h in a condensing tube connected with a high-temperature reaction kettle, and washing with the solvent to obtain the modified silicon dioxide with the concentration of 2-5 wt%, wherein the mass ratio of the silane coupling agent to the organic solvent is 1:1.
Example 1
The formulation of the admixture for mortar and the preparation method thereof are shown in the following table 1:
TABLE 1
Referring to table 1, in addition to the preparation of the protein solution, the preparation method of the admixture for mortar further comprises the steps of:
and adding the thermoplastic resin, the polycarboxylate water reducer, the air entraining agent, the water retaining agent, the EVA and the protein solution into water according to parts by weight, and mixing and stirring for 30min in a stirrer to obtain the additive for the mortar.
Example 2
The formulation of the admixture for mortar and the preparation method thereof are shown in the following table 2:
TABLE 2
Referring to table 2, in addition to the preparation of sodium alginate solution, the preparation method of the admixture for mortar further comprises the following steps:
and adding the thermoplastic resin, the sodium alginate solution, the polycarboxylate water reducer, the air entraining agent, the water retaining agent and the EVA into water according to parts by weight, and mixing and stirring for 30min in a stirrer to obtain the additive for the mortar.
Example 3
The formulation of the admixture for mortar and the preparation method thereof are shown in the following table 3:
TABLE 3 Table 3
Referring to table 3, in addition to the preparation of the formulation solution, the preparation method of the admixture for mortar further comprises the steps of:
and adding the thermoplastic resin, the polycarboxylate water reducer, the air entraining agent, the water retention agent, the EVA and the compound solution into water according to parts by weight, and mixing and stirring for 30min in a stirrer to obtain the additive for mortar.
Example 4
The formulation of the admixture for mortar and the preparation method thereof are shown in the following table 4:
TABLE 4 Table 4
Referring to table 4, in addition to the preparation of the modified silica, the preparation method of the admixture for mortar further comprises the steps of:
and adding the thermoplastic resin, the polycarboxylate water reducer, the air entraining agent, the water retention agent, the EVA and the modified silica into water according to parts by weight, and mixing and stirring for 30min in a stirrer to obtain the additive for the mortar.
Example 5
The formulation of the admixture for mortar and the preparation method thereof are shown in the following table 5:
TABLE 5
Referring to table 5, the preparation method of the admixture for mortar comprises the following steps:
and adding the thermoplastic resin, the polycarboxylate water reducer, the air entraining agent, the water retaining agent, the coating agent, the graphene-based material and EVA into water according to parts by weight, and mixing and stirring for 30min in a stirrer to obtain the additive for mortar.
Example 6
The formulation of the admixture for mortar and the preparation method thereof are shown in the following table 6:
TABLE 6
Referring to table 6, in addition to the preparation of the formulation solution, the preparation method of the admixture for mortar further comprises the steps of:
and adding the thermoplastic resin, the polycarboxylate water reducer, the air entraining agent, the water retaining agent, the graphene-based material, the EVA and the compound solution into water according to parts by weight, and mixing and stirring in a stirrer for 30min to obtain the additive for mortar.
Example 7
The formulation of the admixture for mortar and the preparation method thereof are shown in the following Table 7:
TABLE 7
Referring to table 7, in addition to the preparation of the compounding solution, the modified silica, the preparation method of the admixture for mortar further comprises the following steps:
and adding the thermoplastic resin, the polycarboxylate water reducer, the air entraining agent, the water retaining agent, the coating agent, the graphene-based material and the EVA, the modified silicon dioxide and the compound solution into water according to parts by weight, and mixing and stirring for 50min in a stirrer to obtain the additive for the mortar.
Comparative example 1
The formulation of the admixture for mortar and the preparation method thereof are shown in the following table 8:
TABLE 8
Referring to table 8, the preparation method of the admixture for mortar comprises the following steps:
and adding the thermoplastic resin, the polycarboxylate water reducer, the air entraining agent, the water retaining agent and the EVA into water according to parts by weight, and mixing and stirring for 40 minutes in a stirrer to obtain the additive for the mortar.
The detection method comprises the following steps:
sampling: mortar admixture numbers A1 to A7 were obtained from examples 1 to 7, and mortar admixture number B1 was obtained from comparative example 1.
Mortar proportioning mode one:
the concrete proportions of mortar C1 are shown in Table 9 below:
TABLE 9
| Formulation of | Specific components | Parts by weight (parts) |
| Cement and its preparation method | / | 16 |
| Fly ash | / | 4 |
| Gypsum powder | / | 4 |
| Fine aggregate | Quartz sand of 40-70 meshes | 48 |
| Water and its preparation method | / | 14 |
| Totals to | / | 86 |
86 parts of C1, 14 parts of A1-A7 and 14 parts of B1 are mixed and stirred for 15min, and molded to obtain samples, which are respectively marked as D1-D8, and the 28D cube compressive strength and the water retention rate of the D1-D8 are respectively detected according to JGJ/T70-2009, and referring to Table 11:
TABLE 11
| Numbering device | 28d cube compressive Strength (MPa) | Water retention (%) |
| D1 | 25.5 | 96.99 |
| D2 | 25.6 | 96.79 |
| D3 | 26.1 | 97.74 |
| D4 | 25.5 | 96.05 |
| D5 | 26.2 | 97.11 |
| D6 | 26.1 | 97.82 |
| D7 | 25.9 | 98.01 |
| D8 | 22 | 90.04 |
Mortar proportioning mode one:
referring to the following table 10, a reference mix ratio of mortar C2 was designed for a mortar strength grade M20:
table 10
The respective addition amounts of C2 and 3kg/m 3 Mixing and stirring A1-A7 and B1 for 30min, molding to obtain samples, respectively marked as E1-E8, and respectively detecting the compressive strength and the water retention rate of the 28d cubes of E1-E8 according to JGJ/T70-2009, wherein the samples are shown in Table 12:
table 12
Analysis of results: referring to tables 11 and 12, samples were prepared from small scale and large scale respectively, and tested, and it can be seen from table 11 that the 28d cubes of examples 1 to 7 can have compressive strength 1.2 times that of comparative example 1, water retention can have water retention 1.1 times that of comparative example 1, and the difference can have a value of 7.97%; as can be seen from Table 12, the 28d cubes of examples 1-7 have compressive strength 1.2 times that of comparative example 1, water retention 1.1 times that of comparative example 1, and a difference of 9.05%, so that the mortar admixture of the present application has better performance than comparative example 1 and better stability at different scales; in addition, the application carries out component proportioning by a variable control method, specifically comprises the following steps: comparative example 1 was added with a protein solution alone, comparative example 2 was added with a sodium alginate solution alone, comparative example 3 was added with a compounding solution alone, comparative example 4 was added with a modified silica alone, comparative example 5 was added with a graphene-based material and a coating agent, comparative example 6 was added with a compounding solution and a graphene-based material, comparative example 7 was added with a compounding solution, a graphene-based material, a coating agent, and a modified silica, and it was found from tables 11 and 12 that the 28d cube compressive strength of comparative example 7 was not lower at a small scale than that of comparative example 1 and comparative example 2, but at a large scale, the strength was lower than that of comparative example 1 and comparative example 2, which was still higher than that of comparative example 1, indicating that the compounding solution, the graphene-based material, the coating agent, and the modified silica were added together in mortar, did have a certain modifying effect, and the compatibility between materials was good, but the stability of the strength was not as that of comparative example 3 and comparative example 6, and the compounding mode of comparative example 7 was selected at a small scale. This shows that this application has tested different proportioning modes to different scales, can change the formula according to actual conditions and demand, and the flexibility is fine. Comprehensive shows that the method can reduce the negative influence of the powder on the mortar performance, reduce the limitation of the additive, improve the stability of the mortar and simultaneously give consideration to good compatibility among materials.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The additive for the mortar is characterized by comprising the following components in parts by weight:
40 to 70 parts of thermoplastic resin, 2 to 11 parts of protein solution, 0 to 20 parts of modified silicon dioxide, 5 to 30 parts of sodium alginate solution, 5 to 20 parts of polycarboxylate water reducer, 1 to 40 parts of air entraining agent, 1 to 12 parts of water-retaining agent, 0 to 11 parts of coating agent, 0 to 10 parts of graphene-based material and 1 to 5 parts of EVA,
the compound solution is a mixture of the protein solution and the sodium alginate solution, the weight part of the compound solution is 0-25 parts, and the weight part of the compound solution is not 0 part; the protein solution is whey protein isolate solution.
2. The admixture for mortar of claim 1, wherein the thermoplastic resin is a powdery thermoplastic resin comprising at least one of PVC and rubber.
3. The admixture for mortar of claim 1, wherein the water reducing agent is a polycarboxylate water reducing agent comprising at least one of PHEA, PAM, PMAH.
4. An admixture for mortar according to claim 1, wherein the air entraining agent is sodium hexadecyl aryl sulfonate.
5. The admixture for mortar of claim 1, wherein the graphene-based material comprises at least one of graphene and graphene oxide; the coating agent comprises at least one of beeswax and microcrystalline wax.
6. The admixture for mortar of claim 1, wherein the water-retaining agent comprises at least one of cellulose ether and starch ether.
7. The admixture for mortar of claim 6, wherein the cellulose ether comprises at least one of hydroxyethyl methyl cellulose ether and hydroxypropyl methyl cellulose ether; the starch ether is CMS.
8. A method for preparing the admixture for mortar according to any one of claims 1 to 7, comprising the steps of,
(1) Dissolving the sodium alginate in deionized water to obtain a sodium alginate solution;
(2) Hydrating a protein solution to obtain a hydrated protein solution, and mixing and homogenizing the hydrated protein solution and the sodium alginate solution obtained in the step (1) to obtain a compound solution;
(3) Adding a silane coupling agent, an organic solvent and silicon dioxide into a solvent, mixing, performing ultrasonic dispersion, refluxing and washing to obtain the modified silicon dioxide;
(4) And (3) adding the thermoplastic resin, the protein solution, the modified silicon dioxide obtained in the step (3), the sodium alginate solution obtained in the step (1), the polycarboxylate water reducer, the air entraining agent, the water retaining agent, the coating agent, the graphene-based material, the EVA and the compound solution obtained in the step (2) into water according to parts by weight, and mixing to obtain the additive for the mortar.
9. The method for preparing the admixture for mortar according to claim 8, wherein the silane coupling agent comprises at least one of methyltrimethoxysilane and KH-560, the organic solvent is triethylamine, and the solvent comprises at least one of toluene and ethanol.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811596A (en) * | 2009-09-18 | 2010-08-25 | 江南大学 | Edible polysaccharide-protein composite packaging film and preparation method thereof |
| CN109970386A (en) * | 2019-04-30 | 2019-07-05 | 杭州中荷智慧城市科技有限公司 | A kind of clear-water concrete compound additive |
| CN113651552A (en) * | 2021-09-17 | 2021-11-16 | 南京福盛新材料有限公司 | Polycarboxylic acid high-performance pumping agent and production process and preparation device thereof |
| CN113698128A (en) * | 2021-08-18 | 2021-11-26 | 山东百纳混凝土有限公司 | Mortar admixture, preparation method thereof and use method of mortar admixture |
| CN115246727A (en) * | 2022-07-25 | 2022-10-28 | 湖北省成美建材股份有限公司 | Pervious concrete |
-
2023
- 2023-06-27 CN CN202310767174.XA patent/CN116639905B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811596A (en) * | 2009-09-18 | 2010-08-25 | 江南大学 | Edible polysaccharide-protein composite packaging film and preparation method thereof |
| CN109970386A (en) * | 2019-04-30 | 2019-07-05 | 杭州中荷智慧城市科技有限公司 | A kind of clear-water concrete compound additive |
| CN113698128A (en) * | 2021-08-18 | 2021-11-26 | 山东百纳混凝土有限公司 | Mortar admixture, preparation method thereof and use method of mortar admixture |
| CN113651552A (en) * | 2021-09-17 | 2021-11-16 | 南京福盛新材料有限公司 | Polycarboxylic acid high-performance pumping agent and production process and preparation device thereof |
| CN115246727A (en) * | 2022-07-25 | 2022-10-28 | 湖北省成美建材股份有限公司 | Pervious concrete |
Non-Patent Citations (1)
| Title |
|---|
| 海藻酸钠对乳清分离蛋白溶液稳定性的影响;谭九铭;覃小丽;钟金锋;曾凡坤;崔梦楠;;食品与发酵工业(第08期);全文 * |
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