CN115819066B - Structural waterproof and moistureproof material and preparation method thereof - Google Patents
Structural waterproof and moistureproof material and preparation method thereof Download PDFInfo
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- CN115819066B CN115819066B CN202210803269.8A CN202210803269A CN115819066B CN 115819066 B CN115819066 B CN 115819066B CN 202210803269 A CN202210803269 A CN 202210803269A CN 115819066 B CN115819066 B CN 115819066B
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000004576 sand Substances 0.000 claims abstract description 13
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 239000000080 wetting agent Substances 0.000 claims abstract description 13
- 239000013543 active substance Substances 0.000 claims abstract description 10
- 229920002678 cellulose Polymers 0.000 claims abstract description 9
- 239000001913 cellulose Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000004816 latex Substances 0.000 claims abstract description 7
- 229920000126 latex Polymers 0.000 claims abstract description 7
- 239000011405 expansive cement Substances 0.000 claims abstract description 4
- 239000011398 Portland cement Substances 0.000 claims abstract description 3
- 229920001661 Chitosan Polymers 0.000 claims description 38
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical group OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 21
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- 239000004115 Sodium Silicate Substances 0.000 claims description 13
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 13
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 13
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 238000002425 crystallisation Methods 0.000 claims description 10
- 230000008025 crystallization Effects 0.000 claims description 10
- 239000003469 silicate cement Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 8
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 8
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 8
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 8
- 229920002554 vinyl polymer Polymers 0.000 claims description 8
- 239000002738 chelating agent Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229920001038 ethylene copolymer Polymers 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- 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 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 2
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 20
- 230000035515 penetration Effects 0.000 abstract description 6
- 239000004566 building material Substances 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 7
- 239000003973 paint Substances 0.000 description 6
- 239000011575 calcium Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- -1 dimethyl siloxane Chemical class 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000007903 penetration ability Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000009736 wetting Methods 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the field of building materials, and discloses a structural waterproof and moistureproof material and a preparation method thereof, wherein the structural waterproof and moistureproof material comprises the following components in parts by weight: 20-30 parts of Portland cement, 0-0.5 part of expansive cement, 65-70 parts of silica sand, 0.1-0.5 part of silica fume, 0.1-0.3 part of latex powder, 0.01-0.05 part of wetting agent, 0.1-0.3 part of cellulose and 0.02-0.5 part of active substance. The material has good waterproof effect and deeper penetration depth, can provide long-time effective waterproof for the wall body, so that the wall body has self-repairing capability, has good combination effect with the wall body, is not easy to fall off, and can improve the mechanical property of the wall body.
Description
Technical Field
The invention relates to the field of building materials, in particular to a structural waterproof and moistureproof material and a preparation method thereof.
Background
In the pouring process of concrete, the added mixing water often exceeds the water consumption required by the hydration curing reaction of the concrete, and the excessive mixing water becomes free water to move in the wall after the concrete is cured, so that capillary holes are formed in the internal structure of the concrete, and the capillary holes are easy to suck water into the wall through capillary action, so that the water content in the wall is increased. The basement is a room below the outdoor ground in the building, and the construction of the basement can improve the land utilization efficiency of the building. However, as the outer wall and the bottom plate of the basement are directly contacted with soil, moisture in the soil is easy to infiltrate and erode the outer wall and the bottom plate of the basement through capillary structures in the wall body, so that the indoor ground and the wall surface of the basement are mildewed, the wall decoration layer is separated, and even indoor water inflow is caused, the normal use of the basement and the whole service life of a building can be influenced, and therefore, the waterproof requirement of the wall body of the basement is far higher than that of the outer wall of an overground building.
At present, waterproof paint is generally used for improving the waterproof effect of a wall, wherein the combination effect of an organic paint and the wall is poor and is easy to age. For example, "high polymer modified organosilicon waterproof paint" disclosed in Chinese patent literature, with publication number CN103923563A, is composed of the following components by weight, 10-15 kg of phenyl ether 1, 2-ethylene silicon rubber, 30-50 kg of deionized water, 15-25 kg of titanium dioxide, 10-20 kg of organosilicon monomer, 4-6 kg of defoamer, 4-6 kg of modifier, 4-6 kg of methyl silicone oil, 4-6 kg of resin emulsion, 4-6 kg of nano active carbon and 40-60 kg of dimethyl siloxane. The paint is an organic paint, the main component is elastic emulsion, the adhesive force of the paint to a wet wall surface is poor, and when the osmotic pressure is high, a coating film is easy to bulge or crack, so that the waterproof effect is lost, and the air permeability is poor.
Disclosure of Invention
The invention provides a structural waterproof and moistureproof material and a preparation method thereof, which aim to solve the problems of poor waterproof effect and short effective waterproof time of the waterproof material in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the structural waterproof and moistureproof material comprises the following components in parts by weight: 20 to 30 parts of Portland cement, 0 to 0.5 part of expansion cement, 65 to 70 parts of silica sand, 0.1 to 0.5 part of silica fume, 0.1 to 0.3 part of latex powder, 0.01 to 0.05 part of wetting agent, 0.1 to 0.3 part of cellulose and 0.02 to 0.5 part of active substance.
The active substance in the invention can permeate into the capillary structure in the concrete, when the capillary structure contains water, the active substance can react with calcium in the concrete to generate crystals which can block the capillary structure, water molecules are prevented from passing through, the waterproof effect is good, crystals can be continuously generated when the material is in contact with moisture, the waterproof time is long, and the material can improve the mechanical property of the wall body.
Preferably, the latex powder is one or more of ethylene-vinyl acetate copolymer, vinyl acetate-tertiary ethylene carbonate copolymer and acrylic acid copolymer.
Preferably, the cellulose is one or more of methylcellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methylcellulose.
The cellulose can improve the wetting effect of the material and also has a thickening effect.
Preferably, the active material comprises a crystallization agent and a chelating agent, wherein the mass ratio of the crystallization agent to the chelating agent is (2-3): 1.
the invention adopts the combination of the crystallization agent and the chelating agent, improves the permeation effect of the active substances, and further improves the waterproof effect and the self-healing capacity.
Preferably, the crystallization agent includes ethyl orthosilicate, sodium silicate and aluminum sulfate.
The tetraethoxysilane and the sodium silicate can be combined with Ca in a concrete wall 2+ And calcium hydroxide, which is a hydration product, is combined to generate crystals, and the compactness and strength of the concrete can be improved after the capillary is blocked by the crystals, wherein the penetration speed of the tetraethoxysilane is higher, and the penetration capacity of the sodium silicate is weaker; the aluminum sulfate can promote hydration of unhydrated parts in the wall body so as to generate Ca 2+ Gel and ettringite, thus promoting crystallization of ethyl orthosilicate and sodium silicate on the basis of crystallization itself. Therefore, when the three components are compounded, the waterproof effect is better.
Preferably, the mass ratio of the tetraethoxysilane, the sodium silicate and the aluminum sulfate in the crystallization agent is (4-8): (3-5): 1.
preferably, the chelating agent is EDTA modified chitosan.
EDTA modified chitosan can reduce the surface tension of the material, improve the permeation effect, and EDTA can reduce Ca 2+ Has better complexing ability, can improve the hydration degree of concrete and is also a self-healing effect of a wall body.
Preferably, the EDTA modified chitosan is prepared by the following steps:
(1) Dissolving chitosan in acetic acid solution to obtain chitosan solution, and regulating the pH value of the chitosan solution to 4-6 by acetic acid or sodium hydroxide;
(2) Adding sodium ethylenediamine tetraacetate into the chitosan solution, wherein the mass ratio of the sodium ethylenediamine tetraacetate to the chitosan in the chitosan solution is (1-3): 1, stirring and reacting for 2-4 hours at normal temperature to obtain a reaction solution;
(3) And (3) vacuum drying the reaction solution at normal temperature to obtain the EDTA modified chitosan.
A preparation method of a structural waterproof and moistureproof material comprises the following steps:
A. mixing and stirring silicate cement, expansive cement, silica sand and silica fume for 8-15 min;
B. mixing the latex powder, the wetting agent, the cellulose and the active substances, adding the mixture obtained in the step A, and stirring for 10-20 min.
Therefore, the invention has the following beneficial effects: (1) The waterproof effect is good, the penetration depth is deeper, and the waterproof effect and the self-repairing effect can be provided for a wall body for a long time; (2) The waterproof material has good combination effect with the wall body, is not easy to fall off, and can improve the mechanical property of the wall body.
Detailed Description
The invention is further described below in connection with specific embodiments.
The EDTA modified chitosan in the following implementation method is prepared by the following steps:
(1) Dissolving chitosan in acetic acid solution with the mass fraction of 1% to obtain chitosan solution, wherein the mass fraction of chitosan in the chitosan solution is 1%, and regulating the pH value of the chitosan solution to 5 by using sodium hydroxide;
(2) Adding sodium ethylenediamine tetraacetate into the chitosan solution, wherein the mass ratio of the sodium ethylenediamine tetraacetate to the chitosan in the chitosan solution is 3:1, stirring and reacting for 4 hours at normal temperature to obtain a reaction solution;
(3) And (3) vacuum drying the reaction solution at normal temperature to obtain the EDTA modified chitosan.
General examples
A structural waterproof and moistureproof material is prepared by the following steps:
A. adding silicate cement, expansion cement, silica sand and silica fume into a stirring tank, and stirring for 10min at normal temperature;
B. mixing the emulsion powder, the wetting agent, the cellulose and the active substances, and adding the mixture into a stirring tank to stir for 10min at normal temperature.
Example 1
The structural waterproof and moistureproof material comprises the following components in parts by weight: 26 parts of silicate cement, 68 parts of silica sand, 0.3 part of silica fume, 0.1 part of vinyl acetate-versatic acid ethylene copolymer, 0.01 part of wetting agent HY-352, 0.1 part of hydroxyethyl cellulose, 0.0375 part of tetraethoxysilane, 0.03 part of sodium silicate, 0.0075 part of aluminum sulfate and 0.025 part of EDTA modified chitosan.
Example 2
The structural waterproof and moistureproof material comprises the following components in parts by weight: 26 parts of silicate cement, 0.5 part of expansion cement, 68 parts of silica sand, 0.3 part of silica fume, 0.1 part of acrylic copolymer, 0.01 part of wetting agent HY-352, 0.1 part of hydroxyethyl cellulose, 0.1875 part of tetraethoxysilane, 0.15 part of sodium silicate, 0.0375 part of aluminum sulfate and 0.125 part of EDTA modified chitosan.
Example 3
The structural waterproof and moistureproof material comprises the following components in parts by weight: 30 parts of silicate cement, 65 parts of silica sand, 0.3 part of silica fume, 0.1 part of vinyl acetate-versatic acid ethylene copolymer, 0.01 part of wetting agent HY-352, 0.1 part of hydroxypropyl methyl cellulose, 0.0067 part of tetraethoxysilane, 0.005 part of sodium silicate, 0.0017 part of aluminum sulfate and 0.0065 part of EDTA modified chitosan.
Comparative example 1
The structural waterproof and moistureproof material comprises the following components in parts by weight: 26 parts of silicate cement, 68 parts of silica sand, 0.3 part of silica fume, 0.1 part of vinyl acetate-versatic acid ethylene copolymer, 0.01 part of wetting agent HY-352, 0.1 part of hydroxyethyl cellulose, 0.075 part of tetraethoxysilane and 0.025 part of EDTA modified chitosan.
Comparative example 2
The structural waterproof and moistureproof material comprises the following components in parts by weight: 26 parts of silicate cement, 68 parts of silica sand, 0.3 part of silica fume, 0.1 part of vinyl acetate-versatic acid ethylene copolymer, 0.01 part of wetting agent HY-352, 0.1 part of hydroxyethyl cellulose, 0.075 part of sodium silicate and 0.025 part of EDTA modified chitosan.
Comparative example 3
The structural waterproof and moistureproof material comprises the following components in parts by weight: 26 parts of silicate cement, 68 parts of silica sand, 0.3 part of silica fume, 0.1 part of vinyl acetate-versatic acid ethylene copolymer, 0.01 part of wetting agent HY-352, 0.1 part of hydroxyethyl cellulose, 0.075 part of aluminum sulfate and 0.025 part of EDTA modified chitosan.
Comparative example 4
The structural waterproof and moistureproof material comprises the following components in parts by weight: 26 parts of silicate cement, 68 parts of silica sand, 0.3 part of silica fume, 0.1 part of vinyl acetate-versatic acid ethylene copolymer, 0.01 part of wetting agent HY-352, 0.1 part of hydroxyethyl cellulose, 0.05 part of tetraethoxysilane, 0.04 part of sodium silicate and 0.01 part of aluminum sulfate.
The materials obtained in the examples and the comparative examples were tested for mechanical properties and waterproof ability by the method described in GB 1845-2012 Cement-based permeable crystalline waterproof materials, wherein the test piece material was C30 concrete, the penetration depth was obtained by cutting the test piece, and the middle part of the cut surface was measured, and the test results are shown in the following table.
As can be seen from the data of examples 1-3, the present invention has good waterproof performance, good bonding performance with the substrate, and improved mechanical properties of the substrate.
The comparative examples 1-3 all had weaker waterproof properties than example 1, indicating that the compounding effect of ethyl orthosilicate, sodium silicate and aluminum sulfate was better than using a single component. Whereas comparative example 4, in which no EDTA-modified chitosan was added, had a penetration depth and a permeation resistance pressure smaller than those of examples 1 to 3 using EDTA-modified chitosan, it was shown that EDTA-modified chitosan could further enhance the penetration ability and crystallization effect of the active material.
Claims (8)
1. The structural waterproof and moistureproof material is characterized by comprising the following components in parts by weight: 20-30 parts of Portland cement, 0-0.5 part of expansive cement, 65-70 parts of silica sand, 0.1-0.5 part of silica fume, 0.1-0.3 part of latex powder, 0.01-0.05 part of wetting agent, 0.1-0.3 part of cellulose and 0.02-0.5 part of active substance, wherein the active substance comprises a crystallization agent and a chelating agent, and the chelating agent is EDTA modified chitosan.
2. The structural waterproof and moistureproof material according to claim 1, wherein the latex powder is one or more of ethylene-vinyl acetate copolymer, vinyl acetate-versatic acid ethylene copolymer and acrylic acid copolymer.
3. The structural waterproof and moistureproof material according to claim 1, wherein the cellulose is one or more of methylcellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methylcellulose.
4. The structural waterproof and moistureproof material according to claim 1, wherein the mass ratio of the crystallizing agent to the chelating agent is (2-3): 1.
5. a structural waterproof and moistureproof material according to claim 4, wherein the crystallization agent comprises ethyl orthosilicate, sodium silicate and aluminum sulfate.
6. The structural waterproof and moistureproof material according to claim 5, wherein the mass ratio of ethyl orthosilicate, sodium silicate and aluminum sulfate in the crystallizing agent is (4-8): (3-5): 1.
7. the structural waterproof and moistureproof material according to claim 1, wherein the EDTA-modified chitosan is prepared by the following steps:
(1) Dissolving chitosan in an acetic acid solution to obtain a chitosan solution, and adjusting the pH of the chitosan solution to 4-6 by using acetic acid or sodium hydroxide;
(2) Adding sodium ethylenediamine tetraacetate into the chitosan solution, wherein the mass ratio of the sodium ethylenediamine tetraacetate to the chitosan in the chitosan solution is (1-3): 1, stirring and reacting for 2-4 hours at normal temperature to obtain a reaction solution;
(3) And (3) vacuum drying the reaction solution at normal temperature to obtain the EDTA modified chitosan.
8. A method for preparing the structural waterproof and moistureproof material according to any one of claims 1 to 7, comprising the following steps:
A. mixing and stirring silicate cement, expansive cement, silica sand and silica fume for 8-15 min;
B. and C, mixing the latex powder, the wetting agent, the cellulose and the active substances, adding the mixture obtained in the step A, and stirring for 10-20 min.
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| CN202210803269.8A CN115819066B (en) | 2022-07-07 | 2022-07-07 | Structural waterproof and moistureproof material and preparation method thereof |
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| CN202210803269.8A CN115819066B (en) | 2022-07-07 | 2022-07-07 | Structural waterproof and moistureproof material and preparation method thereof |
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| CN115819066B true CN115819066B (en) | 2024-03-19 |
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| CN115819066A (en) | 2023-03-21 |
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