CN113175107B - Moistureproof wall and construction method thereof - Google Patents
Moistureproof wall and construction method thereof Download PDFInfo
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- CN113175107B CN113175107B CN202110439721.2A CN202110439721A CN113175107B CN 113175107 B CN113175107 B CN 113175107B CN 202110439721 A CN202110439721 A CN 202110439721A CN 113175107 B CN113175107 B CN 113175107B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/644—Damp-proof courses
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The application relates to the technical field of moisture-proof walls, and particularly discloses a moisture-proof wall and a construction method thereof. The construction method of the damp-proof wall body comprises the following steps: 1) polishing the wall base surface; 2) uniformly coating the damp-proof slurry on the wall body base surface, and drying and curing to form a damp-proof layer; 3) and (4) uniformly coating the protective slurry on the surface of the damp-proof layer, and drying and curing to form the protective layer. The moisture-proof slurry is mainly prepared from the following raw materials in parts by weight: 10-15 parts of water emulsion, 1-2 parts of oxidized polyethylene, 0.5-1.5 parts of polyethylene terephthalate, 0.1-0.3 part of cross-linking agent and 0.8-1.5 parts of filler; wherein the aqueous emulsion is prepared from raw materials including aqueous polyurethane emulsion, diacetone acrylamide and adipic dihydrazide. The moisture-proof wall body can be used as an inner wall and an outer wall of a building and an underground building wall body, and has the advantages of moisture resistance and water seepage resistance.
Description
Technical Field
The application relates to the technical field of moisture-proof walls, in particular to a moisture-proof wall and a construction method thereof.
Background
With the continuous progress of the economic society, the construction industry is rapidly developed, and a large number of civil and industrial buildings are built. Due to the influence of geographical environment and wall materials, the problems of peeling and falling off of wall paint or a decorative layer caused by the fact that a plurality of building walls are wet and mildewed, even the wall is corroded and damaged for a long time, the building quality is adversely affected, and great troubles are caused to residents or users.
Chinese patent with application publication No. CN109135375A discloses a moisture-proof and seepage-proof wall body, which is prepared by mixing ethylene glycol diacrylate, hydroxyethyl methacrylate, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide and polyvinyl alcohol to prepare composite mother liquor, then mixing the composite mother liquor with silica fume, silane-terminated polyether, phenyl alkyl sulfonate and phenyl maleimide silicone resin to obtain a wall surface interface agent after banburying, coating the wall surface interface agent on a wall surface base layer to form an interface layer, and then spraying and coating mortar outside the interface layer to obtain the moisture-proof and seepage-proof wall body.
Aiming at the moisture-proof and seepage-proof wall body, the inventor thinks that the interface layer has larger heat conductivity coefficient, poor seepage-proof performance and poor moisture-proof effect.
Disclosure of Invention
In order to improve the moisture-proof effect of the wall body, the application provides the moisture-proof wall body and the construction method thereof.
In a first aspect, the application provides a construction method of a moisture-proof wall, which adopts the following technical scheme:
a construction method of a damp-proof wall body comprises the following steps:
1) polishing the wall base plane;
2) uniformly coating the damp-proof slurry on the wall body base surface, and drying and curing to form a damp-proof layer;
3) and (5) uniformly coating the protective slurry on the surface of the damp-proof layer, and drying and curing to form the protective layer.
The moisture-proof slurry is mainly prepared from the following raw materials in parts by weight: 10-15 parts of water emulsion, 1-2 parts of oxidized polyethylene, 0.5-1.5 parts of polyethylene terephthalate, 0.1-0.3 part of cross-linking agent and 0.8-1.5 parts of filler; wherein the aqueous emulsion is prepared from raw materials including aqueous polyurethane emulsion, diacetone acrylamide and adipic dihydrazide.
The protective slurry is mainly prepared from the following raw materials in parts by weight: 25-35 parts of fly ash, 5-10 parts of silicon dioxide, 30-50 parts of cement, 0.6-1 part of water reducing agent and 15-18 parts of water.
By adopting the technical scheme, as the aqueous emulsion is used as a gel system, the diacetone acrylamide can be copolymerized with the aqueous polyurethane emulsion, the amide double bond on the diacetone acrylamide can be grafted to the molecular chain of the aqueous polyurethane emulsion copolymer and introduced with the ketone carbonyl under the auxiliary action of the cross-linking agent, then the ketone carbonyl on the molecular chain of the copolymer can react with the active hydrogen on the adipic acid dihydrazide to carry out self-crosslinking reaction to form a hydrazone compound, the emulsion system is converted from a linear body to a three-dimensional space net-shaped body, so that the bonding force with a wall base surface is greatly increased, a compact hydrophobic film can be formed on the wall base surface, the filler can play a role of anchoring a bridge frame, the growth and extension of the hydrophobic film are promoted, and the oxidized polyethylene and the polyethylene terephthalate can participate in the film forming process to increase the uniformity of the hydrophobic film, the waterproof and anti-permeability performance of the hydrophobic film is improved, water molecules can be prevented from migrating into the wall, and the cured moisture-proof layer has a low heat conductivity coefficient and good ductility and impermeability; in addition, the silicon dioxide and the fly ash in the protective slurry can block micro cracks and capillary holes, so that the formed protective layer has the effects of high density and water seepage resistance, and the wall can obtain very good effects of moisture prevention and water seepage resistance under the synergistic effect of the protective layer and the moisture-proof layer.
Preferably, the thickness of the moisture-proof layer in the step 2) is 1-1.5 mm.
Through adopting above-mentioned technical scheme, according to the dampproof course of above-mentioned coating thickness can guarantee its waterproof performance, have with the better cohesion of wall body base surface, reduce the dampproof course and take place the probability of skinning, damage after longer time.
Preferably, the filler is at least one of alumina, quartz powder and calcium carbonate.
By adopting the technical scheme, after the alumina, the quartz powder and the calcium carbonate in the filler are uniformly dispersed in the aqueous emulsion system, gel can be formed, and the moisture-proof slurry plays a certain expansion role during curing, so that the self-shrinkage rate of the moisture-proof slurry during curing is reduced, the compactness of the moisture-proof layer is further improved, and the impermeability of the moisture-proof layer is improved.
Preferably, the filler consists of alumina, quartz powder and calcium carbonate according to the mass ratio of (15-25) to (8-15) to (10-15).
By adopting the technical scheme, the filler compounded according to the proportion has a proper expansion rate, the structural stability and the uniformity of the moisture-proof layer are improved, the whole curing process of the moisture-proof slurry is gentle and consistent, and the isotropy is good.
Preferably, the filler is modified by a silane coupling agent.
By adopting the technical scheme, after the filler is modified by the silane coupling agent, the dispersion, compatibility and wettability of filler particles in the protective slurry are improved, the stability of the moisture-proof slurry is improved, the reactivity between the filler and the aqueous emulsion high molecular polymer is improved, the film forming process is accelerated, the modified filler has good hydrophobicity, the hydrophobic film is assisted to resist and inhibit the penetration of moisture, the erosion of the moisture to the moisture-proof layer and the wall body is effectively resisted, and the service life of the moisture-proof layer and the wall body is prolonged.
Preferably, the silane coupling agent is at least one of an epoxy silane coupling agent and a methacryloxy silane coupling agent.
By adopting the technical scheme, the alkoxy on the epoxy silane coupling agent and the methacryloxy silane coupling agent has good binding performance with the filler, and the epoxy on the epoxy silane coupling agent and the methacryloxy on the methacryloxy silane coupling agent have good hydrophobicity and organic reactivity, thereby having good auxiliary effects of improving the waterproof performance of the moisture-proof layer and forming a hydrophobic film.
Preferably, the raw material of the moisture-proof slurry also comprises 0.5-1 weight part of nonionic surfactant.
By adopting the technical scheme, the nonionic surfactant can be adsorbed on the surfaces of the filler and the hydrophobic membrane after being uniformly dispersed in the aqueous emulsion system, the nonpolar group of the nonionic surfactant faces outwards, the surface energy of the filler particles and the hydrophobic membrane is reduced, and the moisture resistance and the impermeability of the hydrophobic membrane and the moisture-proof layer are further improved.
Preferably, the raw material of the protective slurry also comprises 0.3-0.8 weight part of dispersant.
By adopting the technical scheme, the dispersing agent can improve the dispersion uniformity of the raw materials of the protective slurry, improve the system stability in the protective slurry, reduce the probability of agglomeration and condensation, and ensure that the protective layer formed by curing has better uniformity.
Preferably, the raw material of the protective slurry also comprises 0.2-0.5 weight part of defoaming agent.
Through adopting above-mentioned technical scheme, the defoaming agent dispersion back in the protection ground paste system can reduce the surface tension of protection ground paste, makes the microbubble in the protection ground paste can escape fast, reduces the air content of protection ground paste, improves the compactness of inoxidizing coating then.
In a second aspect, the present application provides a moisture-proof wall body, which adopts the following technical scheme:
a damp-proof wall comprises a wall body, a damp-proof layer coated on a base surface of the wall body and a protective layer coated on the damp-proof layer; the damp-proof layer is prepared by drying and curing damp-proof slurry, and the protective layer is prepared by drying and curing protective slurry.
Through adopting above-mentioned technical scheme, the inoxidizing coating forms first defence line, and the compact structure of inoxidizing coating can the separation most moisture, and the dampproof course is as second defence line, and the hydrophobic membrane in the dampproofing coating and hydrophobic material play fine barrier effect to the hydrone, block the migration of hydrone to the wall body in, and then make dampproofing wall body have fine dampproofing, impervious water effect.
In summary, the present application has the following beneficial effects:
1. the moisture-proof slurry adopts the water emulsion, and combines with the oxidized polyethylene and the polyethylene terephthalate to form a compact hydrophobic film layer, and under the synergistic effect of the pre-barrier protection of the protective layer, the moisture-proof wall body obtains very good moisture-proof and anti-permeability effects.
2. The preferred silane coupling agent that adopts in this application carries out modified treatment to the filler, when improving the waterproof performance of dampproof course, has also promoted the structural stability of dampproof course, has prolonged the life of dampproof course.
Detailed Description
The present application will be described in further detail with reference to examples.
The construction method of the moistureproof wall comprises the following steps:
1) polishing the wall base surface;
2) uniformly coating the damp-proof slurry on the wall body base surface, and drying and curing to form a damp-proof layer;
3) and (4) uniformly coating the protective slurry on the surface of the damp-proof layer, and drying and curing to form the protective layer.
The moisture-proof slurry is mainly prepared from the following raw materials in parts by weight: 10-15 parts of water emulsion, 1-2 parts of oxidized polyethylene, 0.5-1.5 parts of polyethylene terephthalate, 0.1-0.3 part of cross-linking agent and 0.8-1.5 parts of filler; wherein the aqueous emulsion is prepared from raw materials including aqueous polyurethane emulsion, diacetone acrylamide and adipic dihydrazide.
The protective slurry is mainly prepared from the following raw materials in parts by weight: 25-35 parts of fly ash, 5-10 parts of silicon dioxide, 30-50 parts of cement, 0.6-1 part of water reducing agent and 15-18 parts of water.
Preferably, the polishing treatment of the wall body base surface in the step 1) is a polishing treatment of the wall body base surface, and the average roughness Ra of the treated wall body base surface is 6.3-12.5. Further preferably, the average roughness Ra of the wall body base surface after the sanding treatment is 12.5.
Preferably, the thickness of the moisture-proof layer in the step 2) is 1-1.5 mm.
Preferably, the thickness of the protective layer in step 3) is 2-3.5 mm.
Preferably, the aqueous emulsion is prepared from raw materials including aqueous polyurethane emulsion, diacetone acrylamide and adipic dihydrazide. Further preferably, the preparation method of the aqueous emulsion comprises the following steps:
1) uniformly mixing the aqueous polyurethane emulsion and diacetone acrylamide in a molar ratio of 25:5 in a reaction kettle, and reacting for 15min at 30 ℃ by using ammonium persulfate as an initiator;
2) adding adipic acid dihydrazide equimolar with diacetone acrylamide into the reaction kettle in the step 1), adjusting the pH value to 8 by using ammonia water, and reacting for 10min under continuous stirring to obtain the product.
Preferably, the solid content of the aqueous polyurethane emulsion is 30-35%. Further preferably, the type of the aqueous polyurethane emulsion preferably adopted in the application is NeoRez R-961, and the manufacturer is Dusmann in the Netherlands. The aqueous polyurethane emulsion of the present application may also employ other aqueous polyurethane emulsions of the related art.
Preferably, the crosslinking agent is hexamethylenediamine.
Preferably, the molecular weight of the oxidized polyethylene is 300000.
Preferably, the filler is at least one of alumina, quartz powder and calcium carbonate. Further preferably, the filler consists of alumina, quartz powder and calcium carbonate according to the mass ratio of (15-25) to (8-15) to (10-15). More preferably, the alumina is nano alumina, and the average grain diameter of the nano alumina is 1-10 μm.
Preferably, the quartz powder is nano quartz powder, and the average particle size of the nano quartz powder is 20-50 μm.
Preferably, the calcium carbonate is nano calcium carbonate, and the average particle size of the nano calcium carbonate is 5-10 μm.
Preferably, the filler is modified by a silane coupling agent. More preferably, the silane coupling agent is at least one of an epoxy silane coupling agent and a methacryloxy silane coupling agent. Further preferably, the silane coupling agent is composed of an epoxy silane coupling agent and a methacryloxy silane coupling agent in a mass ratio of (2-5) to (1-3). Further preferably, the epoxy silane coupling agent preferably used herein is KH-560. The epoxysilane coupling agent of the present application may also employ other epoxysilane coupling agents of the related art. Further preferably, the methacryloxy silane coupling agent preferably used herein is UP-572, and other methacryloxy silane coupling agents in the related art may also be used as the methacryloxy silane coupling agent herein.
Further preferably, the filler is modified by the silane coupling agent, and the method comprises the following steps:
1) uniformly dispersing the filler and xylene in an ultrasonic disperser to prepare a suspension, wherein the ultrasonic power is 300W, and the dispersion time is 30 min;
2) adding a silane coupling agent into the suspension obtained in the step 1), continuing to perform ultrasonic dispersion for 5min, then using a centrifugal machine to centrifugally separate a solid material, and drying the solid material in a vacuum drying oven at normal temperature for 5h to obtain the modified starch.
Preferably, the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent.
Preferably, the fly ash is a first grade fly ash.
Preferably, the cement is a Portland cement designated 42.5.
Preferably, the silica is ultrafine silica having an average particle size of 25 to 50 μm.
Preferably, the raw material of the moisture-proof slurry also comprises 0.5-1 weight part of nonionic surfactant. Further preferably, the nonionic surfactant preferably used herein is fatty alcohol polyoxyethylene ether. The nonionic surfactant of the present application can also employ other nonionic surfactants of the related art.
Preferably, the raw material of the protective slurry also comprises 0.3-0.8 weight part of dispersant. Further preferably, the type of the dispersant preferably adopted in the application is polyether SP-30, and the manufacturer is a Heian petrochemical plant in Jiangsu province. The dispersant of the present application may also employ other dispersants of the related art.
Preferably, the raw material of the protective slurry also comprises 0.2-0.5 weight part of defoaming agent. Further preferably, the defoaming agent preferably used in the present application is a polyether defoaming agent, and the manufacturer is Shandong Shengyi Longjia chemical Co., Ltd.
The information on the main raw materials of the examples and comparative examples of the present application is shown in table 1.
TABLE 1 information on main raw materials of examples and comparative examples of the present application
Example 1
The moisture-proof slurry of the embodiment is prepared from the following raw materials in parts by weight: 10kg of aqueous emulsion, 1kg of oxidized polyethylene, 0.5kg of polyethylene terephthalate, 0.1kg of cross-linking agent and 0.8kg of filler.
The aqueous emulsion is prepared from 500g of aqueous polyurethane emulsion, 80g of diacetone acrylamide, 20g of adipic dihydrazide and a proper amount of ammonia water, wherein the solid content of the aqueous polyurethane emulsion is 34%, and the ammonia water is used for regulating the pH value.
The cross-linking agent is hexamethylenediamine. The molecular weight of the oxidized polyethylene was 300000. The filler is nano alumina.
The preparation method of the water emulsion of the embodiment comprises the following steps:
1) uniformly mixing 500g of aqueous polyurethane emulsion and 80g of diacetone acrylamide in a reaction kettle, and reacting for 15min at the temperature of 30 ℃ by using ammonium persulfate as an initiator;
2) adding 20g of adipic acid dihydrazide into the reaction kettle in the step 1), adjusting the pH value to 8 by using ammonia water, and reacting for 10min under continuous stirring to obtain the product.
The preparation method of the moisture-proof slurry of the embodiment comprises the following steps:
1) stirring the aqueous emulsion, the cross-linking agent and the filler in stirring equipment at the rotating speed of 1000rpm for 10min to prepare a mixed solution;
2) adding oxidized polyethylene and polyethylene terephthalate into the mixed solution obtained in the step 1) and stirring at the rotating speed of 800rpm for 5min to obtain the polyethylene terephthalate.
The protective slurry of the embodiment is prepared from the following raw materials in parts by weight: 25kg of fly ash, 5kg of silicon dioxide, 30kg of cement, 0.6kg of water reducing agent and 15kg of water.
Wherein the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent. The silicon dioxide is superfine silicon dioxide. Ordinary portland cement having the cement designation 42.5.
The preparation method of the protective slurry of the embodiment comprises the following steps:
1) stirring the fly ash, the silicon dioxide, the cement and the water reducing agent in a stirrer at the rotating speed of 600rpm for 15min to prepare a mixture;
2) adding water into the mixture obtained in the step 1), and stirring at the rotating speed of 800rpm for 5min to obtain the water-based paint.
The construction method of the moistureproof wall body comprises the following steps:
1) polishing the wall body base surface by using polishing equipment, wherein the average roughness Ra of the polished wall body base surface is 12.5;
2) the damp-proof slurry of the embodiment is uniformly coated on a wall body base surface, and a damp-proof layer is formed after natural drying and curing, wherein the thickness of the damp-proof layer is 1 mm;
3) the protective slurry of the embodiment is uniformly coated on the surface of a damp-proof layer, and the protective layer is formed after natural drying and curing, wherein the thickness of the protective layer is 2 mm.
Example 2
The moisture-proof slurry of the embodiment is prepared from the following raw materials in parts by weight: 12kg of aqueous emulsion, 1.5kg of oxidized polyethylene, 1kg of polyethylene terephthalate, 0.2kg of cross-linking agent and 1.2kg of filler.
The aqueous emulsion is prepared from 500g of aqueous polyurethane emulsion, 80g of diacetone acrylamide, 20g of adipic dihydrazide and a proper amount of ammonia water, wherein the solid content of the aqueous polyurethane emulsion is 34%, and the ammonia water is used for adjusting the pH.
The cross-linking agent is hexamethylenediamine. The molecular weight of the oxidized polyethylene was 300000. The filler is nano-alumina.
The preparation method of the water emulsion of the embodiment comprises the following steps:
1) uniformly mixing 500g of aqueous polyurethane emulsion and 80g of diacetone acrylamide in a reaction kettle, and reacting for 15min at 30 ℃ by using ammonium persulfate as an initiator;
2) adding 20g of adipic acid dihydrazide into the reaction kettle in the step 1), adjusting the pH value to 8 by using ammonia water, and reacting for 10min under continuous stirring to obtain the product.
The preparation method of the moisture-proof slurry of the embodiment comprises the following steps:
1) stirring the aqueous emulsion, the cross-linking agent and the filler in stirring equipment at the rotating speed of 1000rpm for 10min to prepare a mixed solution;
2) adding oxidized polyethylene and polyethylene terephthalate into the mixed solution obtained in the step 1) and stirring at the rotating speed of 800rpm for 5min to obtain the polyethylene terephthalate.
The protective slurry of the embodiment is prepared from the following raw materials in parts by weight: 30kg of fly ash, 8kg of silicon dioxide, 40kg of cement, 0.8kg of water reducing agent and 16.5kg of water.
Wherein the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent. The silicon dioxide is superfine silicon dioxide. Ordinary portland cement having the cement designation 42.5.
The preparation method of the protective slurry of the embodiment comprises the following steps:
1) stirring the fly ash, the silicon dioxide, the cement and the water reducing agent in a stirrer at the rotating speed of 600rpm for 15min to prepare a mixture;
2) adding water into the mixture obtained in the step 1), and stirring at the rotating speed of 800rpm for 5min to obtain the water-based paint.
The construction method of the moistureproof wall body comprises the following steps:
1) polishing the wall body base surface by using polishing equipment, wherein the average roughness Ra of the polished wall body base surface is 12.5;
2) the damp-proof slurry is uniformly coated on a wall body base surface, and a damp-proof layer is formed after natural drying and curing, wherein the thickness of the damp-proof layer is 1.2 mm;
3) the protective slurry of the embodiment is uniformly coated on the surface of a damp-proof layer, and the protective layer is formed after natural drying and curing, wherein the thickness of the protective layer is 3 mm.
Example 3
The moisture-proof slurry of the embodiment is prepared from the following raw materials in parts by weight: 15kg of aqueous emulsion, 2kg of oxidized polyethylene, 1.5kg of polyethylene terephthalate, 0.3kg of cross-linking agent and 1.5kg of filler.
The aqueous emulsion is prepared from 500g of aqueous polyurethane emulsion, 80g of diacetone acrylamide, 20g of adipic dihydrazide and a proper amount of ammonia water, wherein the solid content of the aqueous polyurethane emulsion is 34%, and the ammonia water is used for adjusting the pH.
The cross-linking agent is hexamethylenediamine. The molecular weight of the oxidized polyethylene was 300000. The filler is nano alumina.
The preparation method of the water emulsion of the embodiment comprises the following steps:
1) uniformly mixing 500g of aqueous polyurethane emulsion and 80g of diacetone acrylamide in a reaction kettle, and reacting for 15min at 30 ℃ by using ammonium persulfate as an initiator;
2) adding 20g of adipic acid dihydrazide into the reaction kettle in the step 1), adjusting the pH value to 8 by using ammonia water, and reacting for 10min under continuous stirring to obtain the product.
The preparation method of the moisture-proof slurry of the embodiment comprises the following steps:
1) stirring the aqueous emulsion, the cross-linking agent and the filler in stirring equipment at the rotating speed of 1000rpm for 10min to prepare a mixed solution;
2) adding oxidized polyethylene and polyethylene terephthalate into the mixed solution obtained in the step 1) and stirring at the rotating speed of 800rpm for 5min to obtain the polyethylene terephthalate.
The protective slurry of the embodiment is prepared from the following raw materials in parts by weight: 35kg of fly ash, 10kg of silicon dioxide, 50kg of cement, 1kg of water reducing agent and 18kg of water.
Wherein the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent. The silicon dioxide is superfine silicon dioxide. Ordinary portland cement having the cement designation 42.5.
The preparation method of the protective slurry of the embodiment comprises the following steps:
1) stirring the fly ash, the silicon dioxide, the cement and the water reducing agent in a stirrer at the rotating speed of 600rpm for 15min to prepare a mixture;
2) adding water into the mixture obtained in the step 1), and stirring at the rotating speed of 800rpm for 5min to obtain the water-based paint.
The construction method of the damp-proof wall body comprises the following steps:
1) polishing the wall body base surface by using polishing equipment, wherein the average roughness Ra of the polished wall body base surface is 12.5;
2) the damp-proof slurry is uniformly coated on a wall body base surface, and a damp-proof layer is formed after natural drying and curing, wherein the thickness of the damp-proof layer is 1.2 mm;
3) the protective slurry of the embodiment is uniformly coated on the surface of a damp-proof layer, and the protective slurry is naturally dried and cured to form a protective layer, wherein the thickness of the protective layer is 3 mm.
Example 4
The raw materials of the moisture-proof slurry of the present example are different from those of example 2 in that: the filler was quartz powder, and the rest was the same as in example 2.
Wherein the quartz powder is nano quartz powder, and the average particle size of the nano quartz powder is 20-50 μm.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example is the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 5
The raw material of the moisture-proof slurry of this example differs from that of example 2 in that: the filler was calcium carbonate, the rest being the same as in example 2.
Wherein the calcium carbonate is nano calcium carbonate, and the average grain diameter of the nano calcium carbonate is 5-10 mu m.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture resistant slurry of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example is the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 6
The raw material of the moisture-proof slurry of this example differs from that of example 2 in that: the filler is composed of alumina, quartz powder and calcium carbonate according to the mass ratio of 15:8:10, and the rest is the same as that in the embodiment 2.
Wherein the alumina is nano alumina, and the average grain diameter of the nano alumina is 1-10 μm. The calcium carbonate is nano calcium carbonate, and the average grain diameter of the nano calcium carbonate is 5-10 mu m. The quartz powder is nano quartz powder, and the average particle size of the nano quartz powder is 20-50 μm.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture resistant slurry of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example is the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 7
The raw material of the moisture-proof slurry of this example differs from that of example 2 in that: the filler is composed of alumina, quartz powder and calcium carbonate according to the mass ratio of 20:13:12, and the rest is the same as that in the embodiment 2.
Wherein the alumina is nano alumina, and the average grain diameter of the nano alumina is 1-10 μm. The calcium carbonate is nano calcium carbonate, and the average grain diameter of the nano calcium carbonate is 5-10 mu m. The quartz powder is nano quartz powder, and the average particle size of the nano quartz powder is 20-50 μm.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example was the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 8
The raw material of the moisture-proof slurry of this example differs from that of example 2 in that: the filler is composed of alumina, quartz powder and calcium carbonate in a mass ratio of 25:15:15, and the rest is the same as in example 2.
Wherein the alumina is nano alumina, and the average grain diameter of the nano alumina is 1-10 μm. The calcium carbonate is nano calcium carbonate, and the average grain diameter of the nano calcium carbonate is 5-10 mu m. The quartz powder is nano quartz powder, and the average particle size of the nano quartz powder is 20-50 μm.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example was the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 9
The raw material of the moisture-proof slurry of this example differs from that of example 7 in that: the filler was modified with a silane coupling agent, and the rest was the same as in example 7.
Wherein the silane coupling agent is an epoxy silane coupling agent with the model of KH-560.
The filler of the embodiment is modified by the silane coupling agent, and comprises the following steps:
1) uniformly dispersing the filler and 100ml of dimethylbenzene in an ultrasonic disperser to prepare a suspension, wherein the ultrasonic power is 300W, and the dispersing time is 30 min;
2) adding a silane coupling agent into the suspension obtained in the step 1), continuing to perform ultrasonic dispersion for 5min, then performing centrifugal separation by using a centrifugal machine to obtain a solid material, and drying the solid material in a vacuum drying oven at normal temperature for 5h to obtain the product.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example is the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 10
The raw material of the moisture-proof slurry of this example differs from that of example 7 in that: the filler was modified with a silane coupling agent, and the rest was the same as in example 7.
Wherein the silane coupling agent is methacryloxy silane coupling agent with the model number of UP-572.
The filler of the embodiment is modified by the silane coupling agent, and comprises the following steps:
1) uniformly dispersing the filler and 100ml of dimethylbenzene in an ultrasonic disperser to prepare a suspension, wherein the ultrasonic power is 300W, and the dispersing time is 30 min;
2) adding a silane coupling agent into the suspension obtained in the step 1), continuing to perform ultrasonic dispersion for 5min, then performing centrifugal separation by using a centrifugal machine to obtain a solid material, and drying the solid material in a vacuum drying oven at normal temperature for 5h to obtain the product.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example is the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 11
The raw material of the moisture-proof slurry of this example differs from that of example 7 in that: the filler was modified with a silane coupling agent, and the rest was the same as in example 7.
The silane coupling agent is composed of an epoxy silane coupling agent and a methacryloxy silane coupling agent according to the mass ratio of 2: 1. The epoxy silane coupling agent is KH-560. The type of the methacryloxy silane coupling agent is UP-572.
The filler of the embodiment is modified by the silane coupling agent, and comprises the following steps:
1) uniformly dispersing the filler and 100ml of dimethylbenzene in an ultrasonic disperser to prepare a suspension, wherein the ultrasonic power is 300W, and the dispersing time is 30 min;
2) adding a silane coupling agent into the suspension obtained in the step 1), continuing to perform ultrasonic dispersion for 5min, then performing centrifugal separation by using a centrifugal machine to obtain a solid material, and drying the solid material in a vacuum drying oven at normal temperature for 5h to obtain the product.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example was the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 12
The raw material of the moisture-proof slurry of this example differs from that of example 7 in that: the filler was modified with a silane coupling agent, and the rest was the same as in example 7.
The silane coupling agent consists of an epoxy silane coupling agent and a methacryloxy silane coupling agent according to the mass ratio of 3.5: 2. The epoxy silane coupling agent is KH-560. The type of the methacryloxy silane coupling agent is UP-572.
The filler of the embodiment is modified by the silane coupling agent, and comprises the following steps:
1) uniformly dispersing the filler and 100ml of dimethylbenzene in an ultrasonic disperser to prepare a suspension, wherein the ultrasonic power is 300W, and the dispersing time is 30 min;
2) adding a silane coupling agent into the suspension obtained in the step 1), continuing to perform ultrasonic dispersion for 5min, then performing centrifugal separation by using a centrifugal machine to obtain a solid material, and drying the solid material in a vacuum drying oven at normal temperature for 5h to obtain the product.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example is the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 13
The raw material of the moisture-proof slurry of this example differs from that of example 7 in that: the filler was modified with a silane coupling agent, and the rest was the same as in example 7.
The silane coupling agent is composed of an epoxy silane coupling agent and a methacryloxy silane coupling agent according to the mass ratio of 5: 3. The epoxy silane coupling agent is KH-560. The type of the methacryloxy silane coupling agent is UP-572.
The filler of the embodiment is modified by the silane coupling agent, and comprises the following steps:
1) uniformly dispersing the filler and 100ml of dimethylbenzene in an ultrasonic disperser to prepare a suspension, wherein the ultrasonic power is 300W, and the dispersing time is 30 min;
2) adding a silane coupling agent into the suspension obtained in the step 1), continuing to perform ultrasonic dispersion for 5min, then performing centrifugal separation by using a centrifugal machine to obtain a solid material, and drying the solid material in a vacuum drying oven at normal temperature for 5h to obtain the product.
The aqueous emulsion of this example was the same as in example 2.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example is the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 14
The moisture-proof slurry of the embodiment is prepared from the following raw materials in parts by weight: 12kg of aqueous emulsion, 1.5kg of oxidized polyethylene, 1kg of polyethylene terephthalate, 0.2kg of cross-linking agent, 1.2kg of filler and 0.8kg of nonionic surfactant.
The aqueous emulsion is prepared from 500g of aqueous polyurethane emulsion, 80g of diacetone acrylamide, 20g of adipic dihydrazide and a proper amount of ammonia water, wherein the solid content of the aqueous polyurethane emulsion is 34%, and the ammonia water is used for adjusting the pH.
The cross-linking agent is hexamethylenediamine. The molecular weight of the oxidized polyethylene was 300000. The filler is composed of alumina, quartz powder and calcium carbonate according to the mass ratio of 20:13:12, and is modified by a silane coupling agent. The nonionic surfactant is fatty alcohol-polyoxyethylene ether.
The preparation method of the water emulsion of the embodiment comprises the following steps:
1) uniformly mixing 500g of aqueous polyurethane emulsion and 80g of diacetone acrylamide in a reaction kettle, and reacting for 15min at the temperature of 30 ℃ by using ammonium persulfate as an initiator;
2) adding 20g of adipic acid dihydrazide into the reaction kettle in the step 1), adjusting the pH value to 8 by using ammonia water, and reacting for 10min under continuous stirring to obtain the product.
The preparation method of the moisture-proof slurry of the embodiment comprises the following steps:
1) stirring the aqueous emulsion, the cross-linking agent, the filler and the nonionic surfactant in stirring equipment at the rotating speed of 1000rpm for 10min to prepare a mixed solution;
2) adding oxidized polyethylene and polyethylene terephthalate into the mixed solution obtained in the step 1) and stirring at the rotating speed of 800rpm for 5min to obtain the polyethylene terephthalate.
The procedure of subjecting the filler of this example to the modification treatment with the silane coupling agent was the same as in example 13.
The protective slurry of this example was the same as in example 2.
The preparation method of the protective paste of this example was the same as that of example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 15
The protective slurry of the embodiment is prepared from the following raw materials in parts by weight: 30kg of fly ash, 8kg of silicon dioxide, 40kg of cement, 0.8kg of water reducing agent, 0.5kg of dispersing agent and 16.5kg of water.
Wherein the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent. The silicon dioxide is superfine silicon dioxide. Ordinary portland cement having the cement designation 42.5. The type of the dispersant is polyether SP-30.
The preparation method of the protective slurry of the embodiment comprises the following steps:
1) stirring the fly ash, the silicon dioxide, the cement and the water reducing agent in a stirrer at the rotating speed of 600rpm for 15min to prepare a mixture;
2) adding water and a dispersing agent into the mixture obtained in the step 1), and stirring at the rotating speed of 800rpm for 5min to obtain the water-based paint.
The moisture resistant slurry of this example was the same as in example 14.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Example 16
The protective slurry of the embodiment is prepared from the following raw materials in parts by weight: 30kg of fly ash, 8kg of silicon dioxide, 40kg of cement, 0.8kg of water reducing agent, 0.5kg of dispersing agent, 0.35kg of defoaming agent and 16.5kg of water.
Wherein the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent. The silicon dioxide is superfine silicon dioxide. Ordinary portland cement having a designation of cement 42.5. The dispersant is polyether SP-30.
The preparation method of the protective slurry of the embodiment comprises the following steps:
1) stirring the fly ash, the silicon dioxide, the cement and the water reducing agent in a stirrer at the rotating speed of 600rpm for 15min to prepare a mixture;
2) adding water, a dispersing agent and a defoaming agent into the mixture obtained in the step 1), and stirring at the rotating speed of 800rpm for 5min to obtain the composite material.
The moisture resistant slurry of this example was the same as in example 14.
The aqueous emulsion of this example was prepared in the same manner as in example 2.
The moisture-proof paste of this example was prepared in the same manner as in example 2.
The construction method of the moisture-proof wall of this embodiment is the same as that of embodiment 2.
Comparative example
Comparative example 1
The moisture-proof slurry of the comparative example is prepared from the following raw materials in parts by weight: 12kg of aqueous emulsion, 0.2kg of cross-linking agent and 1.2kg of filler.
Wherein the water emulsion is acrylic emulsion. The filler is nano alumina. The cross-linking agent is hexamethylenediamine.
The preparation method of the damp-proof slurry of the comparative example is that the water emulsion, the cross-linking agent and the filling material are stirred in a stirring device for 10min at the rotating speed of 1000 rpm.
The protective slurry of the comparative example was prepared from the following raw materials by weight: 30kg of fly ash, 8kg of silicon dioxide, 40kg of cement, 0.8kg of water reducing agent and 16.5kg of water.
Wherein the water reducing agent is a high-efficiency polycarboxylic acid water reducing agent. The silicon dioxide is superfine silicon dioxide. Ordinary portland cement having the cement designation 42.5.
The preparation method of the protective paste of the comparative example comprises the following steps:
1) stirring the fly ash, the silicon dioxide, the cement and the water reducing agent in a stirrer at the rotating speed of 600rpm for 15min to prepare a mixture;
2) adding water into the mixture obtained in the step 1), and stirring at the rotating speed of 800rpm for 5min to obtain the water-based paint.
The construction method of the moisture-proof wall comprises the following steps:
1) polishing the wall body base surface by using polishing equipment, wherein the average roughness Ra of the polished wall body base surface is 12.5;
2) uniformly coating the moisture-proof slurry of the comparative example on a wall body base surface, and naturally drying and curing to form a moisture-proof layer, wherein the thickness of the moisture-proof layer is 1.2 mm;
3) uniformly coating the protective slurry of the comparative example on the surface of a damp-proof layer, naturally drying and curing to form a protective layer, wherein the thickness of the protective layer is 3mm
Performance test
Detection method/test method
The detection method comprises the following steps: the moisture content of the moisture-proof wall in the positions close to the moisture-proof layer in the wall bodies in examples 1 to 16 and comparative example 1 was measured by using Shenzhen Elegary SH-01 type hygrometers according to the requirements of standards BS8203 and BS8204 for 48h of relative air humidity, and the test results are shown in Table 2.
Table 2 results of moisture resistance test of moisture-proof walls in examples 1 to 16 and comparative example 1
| Serial number | Has water content of% |
| Example 1 | 4.63 |
| Example 2 | 4.36 |
| Example 3 | 4.57 |
| Example 4 | 4.12 |
| Example 5 | 3.96 |
| Example 6 | 3.92 |
| Example 7 | 3.88 |
| Example 8 | 3.72 |
| Example 9 | 3.59 |
| Example 10 | 3.65 |
| Example 11 | 3.38 |
| Example 12 | 3.41 |
| Example 13 | 3.32 |
| Example 14 | 3.39 |
| Example 15 | 3.25 |
| Example 16 | 3.17 |
| Comparative example 1 | 9.26 |
As can be seen from table 2, inoxidizing coating and the dampproof course on the dampproofing wall body of this application can the separation most moisture, prevents moisture to the migration in the wall body, makes dampproofing wall body have fine humidity resistance.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (6)
1. A construction method of a damp-proof wall body is characterized in that: the method comprises the following steps:
1) polishing the wall base surface;
2) uniformly coating the damp-proof slurry on the wall body base surface, and drying and curing to form a damp-proof layer;
3) uniformly coating the protective slurry on the surface of the damp-proof layer, and drying and curing to form a protective layer;
the moisture-proof slurry is mainly prepared from the following raw materials in parts by weight: 10-15 parts of water emulsion, 1-2 parts of oxidized polyethylene, 0.5-1.5 parts of polyethylene terephthalate, 0.1-0.3 part of cross-linking agent and 0.8-1.5 parts of filler; wherein the aqueous emulsion is prepared from raw materials including aqueous polyurethane emulsion, diacetone acrylamide and adipic dihydrazide; the molecular weight of the oxidized polyethylene is 300000; the filler consists of alumina, quartz powder and calcium carbonate according to the mass ratio of (15-25) to (8-15) to (10-15), the average grain diameter of the alumina is 1-10 mu m, the average grain diameter of the quartz powder is 20-50 mu m, and the average grain diameter of the calcium carbonate is 5-10 mu m;
the protective slurry is mainly prepared from the following raw materials in parts by weight: 25-35 parts of fly ash, 5-10 parts of silicon dioxide, 30-50 parts of cement, 0.6-1 part of water reducing agent, 15-18 parts of water, 0.3-0.8 part of dispersing agent and 0.2-0.5 part of polyether defoamer; the fly ash is first-grade fly ash; the silicon dioxide is superfine silicon dioxide, and the average particle size of the superfine silicon dioxide is 25-50 mu m.
2. The construction method of the moisture-proof wall body as claimed in claim 1, wherein: the thickness of the moisture-proof layer in the step 2) is 1-1.5 mm.
3. The construction method of a moisture-proof wall body as claimed in claim 1, wherein: the filler is modified by a silane coupling agent.
4. The construction method of the moisture-proof wall body as claimed in claim 3, wherein: the silane coupling agent is at least one of epoxy silane coupling agent and methacryloxy silane coupling agent.
5. The construction method of the moisture-proof wall body as claimed in claim 1, wherein: the raw material of the moisture-proof slurry also comprises 0.5-1 weight part of nonionic surfactant.
6. A dampproofing wall body which characterized in that: comprises a wall body, a moisture-proof layer coated on the base surface of the wall body and a protective layer coated on the moisture-proof layer; wherein the moisture-proof layer is obtained by drying and curing the moisture-proof slurry as defined in claim 1, and the protective layer is obtained by drying and curing the protective slurry as defined in claim 1.
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