CN112012418B - Construction method for laying indoor stone materials capable of preventing hollowing - Google Patents
Construction method for laying indoor stone materials capable of preventing hollowing Download PDFInfo
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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
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
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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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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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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
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
-
- 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
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0885—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements specially adapted for being adhesively fixed to the wall; Fastening means therefor; Fixing by means of plastics materials hardening after application
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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
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0889—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections
- E04F13/0891—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections with joint fillings
-
- 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
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
- E04F13/141—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass with an outer layer of concrete
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to the field of building construction, in particular to a construction method for laying and pasting anti-hollowing indoor stone, which comprises the following steps: step 1, prefabricating a stone plate; step 2, cleaning a base layer; step 3, setting a leveling layer; step 4, coating an adhesive layer; step 5, laying stone plates; step 6, filling agent is supplemented; and 7, performing later maintenance. The invention solves the problem that the construction quality of the existing paving and pasting mode is too dependent on the skill level of the technology; and because the volume stability of the common concrete is poor, the common concrete is easy to cause the problems of hollowing and cracking after being exposed in the air for a long time. The construction method for laying and pasting the anti-hollowing indoor stone has good effect on preventing hollowing and cracking, is simple and convenient to operate, and can easily realize standard operation even if the technique is insufficient.
Description
Technical Field
The invention relates to the field of building construction, in particular to a construction method for laying and pasting anti-hollowing indoor stone.
Background
With the social development, people have higher and higher requirements on life, and in the building industry, stone is always the most widely applied building material, and is increasingly used as a decorative material due to firm texture, naturally-changed patterns and colors. The construction of the traditional stone ground paving and pasting generally adopts a wet pasting construction method: the method comprises the steps of soaking and drying a plate in advance in the shade, firstly conducting trial paving, knocking by a rubber hammer, compacting mortar to a paving height, lifting and moving stone to one side, checking whether the upper surface of the mortar is matched with the plate, filling and leveling, then fully pouring a cement mortar binding layer on a cement mortar leveling layer, then paving a stone plate, knocking a wood base plate by the rubber hammer, and leveling.
But the construction quality of the paving mode is too dependent on the skill level of the technology; and because the volume stability of the common concrete is poor, the phenomena of hollowing and cracking easily occur after the common concrete is exposed in the air for a long time.
Disclosure of Invention
Aiming at the problems, the invention provides a construction method for laying and pasting indoor stone materials, which comprises the following specific steps:
step 1, prefabricating a stone plate: adding concrete into the prefabricated mould to prepare a prefabricated stone plate;
step 2, cleaning a base layer: sequentially removing impurities, removing oil and leveling the indoor ground base layer;
step 3, setting a leveling layer: designing a leveling layer according to the ground base layer, making corresponding marks, laying the leveling layer according to the marks and maintaining;
step 4, coating an adhesive layer: coating a layer of bonding material on the leveling layer to ensure uniform thickness of the bonding material;
step 5, laying stone plates: paving and sticking the prefabricated stone plate above the bonding layer, and arranging according to a preset scheme;
step 6, filling agent supplement: filling gaps among the laid prefabricated stone plates completely through a filling agent;
and 7, later maintenance: after the filler was completely dried, it was examined whether looseness or voids occurred and repaired.
Preferably, the prefabricated stone plate is prepared by paving concrete into the prefabricated mould according to a preset height, paving stone on the concrete, and curing the concrete for 7-14 days.
Preferably, the concrete of the precast stone slab comprises the following components in parts by weight:
25-35 parts of cement, 20-40 parts of water, 10-15 parts of fly ash, 16-24 parts of aggregate, 10-20 parts of heat-insulating material, 4-8 parts of modified latex powder and 2-3 parts of polypropylene fiber.
Preferably, the leveling layer is made of concrete with the same formula as the prefabricated stone plate.
Preferably, the cement is ordinary portland cement.
Preferably, the particle size of the fly ash is less than 0.05 mm.
Preferably, the aggregate comprises coarse aggregate and fine aggregate; the mass ratio of the coarse aggregate to the fine aggregate is 1: 4-5.
Preferably, the preparation method of the heat insulation material comprises the following steps:
s1, weighing boron nitride nanoparticles, adding the boron nitride nanoparticles into acetone, and ultrasonically dispersing the boron nitride nanoparticles uniformly to obtain a boron nitride nanoparticle dispersion liquid;
wherein the mass ratio of the boron nitride nanoparticles to the acetone is 1: 5-10;
s2, weighing liquid paraffin and lauric acid, mixing, placing in a water bath at 40-60 ℃, stirring until the liquid paraffin and lauric acid are completely changed into liquid, and continuing stirring for 0.1-0.5 h to obtain a mixed solution;
wherein the mass ratio of the liquid paraffin to the lauric acid is 1: 2-4;
s3, adding the boron nitride nano dispersion liquid into the mixed solution while stirring, continuing stirring for 2-10 hours after the addition is finished, then placing the reaction solution under an ice-water bath condition while the reaction solution is hot to obtain a boron nitride composite product, and storing the boron nitride composite product at 0-4 ℃ for later use;
wherein the volume ratio of the boron nitride nano dispersion liquid to the mixed solution is 1: 1.5-3;
s4, weighing the boron nitride composite product, mixing the boron nitride composite product with the vitrified micro bubbles, placing the mixture in a vacuum drying oven, pumping the mixture to a negative pressure, heating the mixture to 40-60 ℃, continuing to perform heat preservation treatment for 1-3 hours after the boron nitride composite product is liquefied, recovering the mixture to normal pressure, filtering the mixture while the mixture is hot, and removing surface liquid by using oil absorption paper to obtain modified vitrified micro bubbles;
wherein the mass ratio of the boron nitride composite product to the vitrified micro bubbles is 2-3: 1;
preferably, the preparation method of the modified latex powder comprises the following steps:
s1, weighing poly dimethyl diallyl ammonium chloride, adding the poly dimethyl diallyl ammonium chloride into deionized water, heating to 60-80 ℃, and stirring until the poly dimethyl diallyl ammonium chloride is completely dissolved to obtain a poly dimethyl diallyl ammonium chloride solution;
wherein the mass ratio of the poly dimethyl diallyl ammonium chloride to the deionized water is 1: 6-15;
s2, adding the redispersible latex powder into the poly dimethyl diallyl ammonium chloride solution, uniformly dispersing, pouring into a reaction kettle, heating to 100-150 ℃, sealing and preserving heat for 5-8 h, cooling to room temperature, filtering to obtain a solid, and vacuum drying to obtain a primary modified substance of the latex powder;
wherein the mass ratio of the redispersible latex powder to the poly dimethyl diallyl ammonium chloride solution is 1: 12-18;
s3, weighing powdery nitrile rubber, adding the powdery nitrile rubber into diethylene glycol dibenzoate, stirring the powdery nitrile rubber and the diethylene glycol dibenzoate uniformly, adding the emulsion powder primary modifier and isobutyl triethoxy silicon, performing ultrasonic dispersion on the emulsion powder primary modifier and isobutyl triethoxy silicon uniformly, heating the mixture to 80-100 ℃, performing stirring reaction for 1-4 hours, filtering the mixture while the mixture is hot, taking a solid, washing the solid with acetone for three times, and performing vacuum drying to obtain a modified emulsion powder crude product;
wherein the mass ratio of the powdery nitrile rubber, the diethylene glycol dibenzoate, the primary modified product of the latex powder and the isobutyl triethoxy silicon is 1: 3-10: 4-8: 0.03-0.05;
s4, adding the crude modified latex powder product into deionized water, stirring uniformly, and performing spray drying treatment to obtain modified latex powder;
wherein the mass ratio of the modified emulsion powder crude product to the deionized water is 1: 8-12.
Preferably, the redispersible latex powder is an ethylene-vinyl acetate copolymer.
Preferably, the thickness of the adhesive material coating is 1-3 mm.
Preferably, the bonding material comprises the following components in parts by weight:
40-80 parts of modified epoxy resin, 20-30 parts of poly (triphenylmethyl methacrylate), 15-25 parts of glass fiber reinforced plastic powder, 10-20 parts of talcum powder, 3-6 parts of polypropylene glycol ether and 1-5 parts of low-alkali expanding agent.
Preferably, the bonding material is required to be uniformly mixed with the epoxy resin curing agent when in use, and the mass ratio of the bonding material to the epoxy resin curing agent is 10: 2-5.
Preferably, the preparation method of the modified epoxy resin comprises the following steps:
s1, weighing gamma-chloropropylmethyldimethoxysilane, adding the gamma-chloropropylmethyldimethoxysilane into absolute ethanol, stirring the mixture uniformly, placing the mixture in a water bath at 50-60 ℃, dropwise adding an ethanol solution of citric acid until the pH value of the liquid is 3.0-5.0, carrying out reflux reaction for 24-48 h, cooling and standing the mixture at room temperature for 8-10 h, filtering the mixture to obtain a solid, washing the solid to be neutral by using dichloromethane, and drying the solid under reduced pressure to obtain a cage-type silane product;
wherein the mass concentration of the citric acid ethanol solution is 10 percent; the mass ratio of the gamma-chloropropylmethyldimethoxysilane to the absolute ethyl alcohol is 1: 5-8;
s2, adding germanium selenide powder into deionized water, performing ultrasonic dispersion until the germanium selenide powder is uniform, adding the cage-type silane product, stirring until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, sealing, placing the reaction kettle in an oven, heating to 150-200 ℃, reacting for 8-12 hours, cooling to room temperature, filtering to obtain a solid, washing with ethanol for three times, washing with deionized water for three times, performing reduced pressure drying, and crushing to a nano shape to obtain modified germanium selenide;
wherein the mass ratio of the germanium selenide powder to the cage-type silane product to the deionized water is 1: 0.2-0.4: 5-10;
s3, adding the modified germanium selenide into epoxy resin, stirring and dispersing uniformly, heating to 40-50 ℃, and stirring for 2-4 hours to obtain modified epoxy resin;
the mass ratio of the modified germanium selenide to the epoxy resin is 1: 10-20.
The invention has the beneficial effects that:
1. the invention provides a construction method for laying and pasting indoor stone materials for preventing hollowing, which comprises the process from preparing a stone plate to laying and pasting the stone plate. The stone plate is prefabricated by concrete raw materials, the leveling layer is prepared, and after maintenance is completed, the prefabricated stone plate is paved on the leveling layer through an adhesive. Firstly, the prefabricated stone plate is prepared separately, so that even if the individual plate shrinks, the stone plate can be conveniently replaced; secondly, the prefabricated stone plate and the leveling layer are maintained separately, and the concrete part of the stone plate and the leveling layer are the same in ingredient, so that hollowing and cracking can be avoided to a great extent after splicing; then, the prefabricated stone plate is laid on the leveling layer by using an adhesive, and the adhesive can buffer the gap generated by shrinkage. Therefore, the anti-hollowing indoor stone paving construction method has good effect on preventing hollowing and cracking, is simple and convenient to operate, and can easily realize standard operation even if the workers are technically insufficient.
2. The epoxy resin has strong binding force, low shrinkage, stable chemical property and good mildew resistance, is suitable for being used as a binding material, but has unsatisfactory effect when being used for binding with concrete. The rigidity of the composite material is enhanced by adding the poly (triphenylmethyl methacrylate), the impact resistance of the composite material is enhanced by adding the glass fiber reinforced plastic powder, the tensile strength of the composite material is enhanced by adding the talcum powder, and the composite material has the effects of compensating and preventing shrinkage by adding the polypropylene glycol ether and the low-alkali expanding agent. In addition, the invention improves the bonding capability and the permeability of the epoxy resin by modifying the epoxy resin, and specifically comprises the following steps: firstly, carrying out reflux reaction on gamma-chloropropylmethyldimethoxysilane in ethanol under an acidic condition to generate cage-type polysilsesquioxane, and then carrying out grafting reaction on the cage-type polysilsesquioxane and germanium selenide to finally obtain the modified germanium selenide. Because the modified germanium selenide is formed by the polysilsesquioxane grafted in the germanium selenide with a larger specific surface area and a multilayer two-dimensional structure, the product has the properties of a rigid metal material (two-dimensional germanium selenide) and tough silicon rubber (cage polysilsesquioxane), the rigidity and flexibility of the epoxy resin are improved, and the product can be stably connected with the epoxy resin through the polysilsesquioxane with multiple functional groups. Therefore, the modified epoxy resin prepared by the invention can greatly improve the bonding performance and the permeability of the modified epoxy resin in concrete, and further has firmer bonding with the concrete.
3. At present, certain redispersible latex powder is added in the concrete preparation, ethylene-vinyl acetate copolymer (EVA) is mostly used at present, and the addition of the EVA can improve the bonding strength of mortar and various base materials and simultaneously improve the flexibility, deformability, bending strength, wear resistance, toughness, water retention capacity and constructability of the mortar. However, although EVA is good at normal temperature, it has poor flexibility at low temperature, and in winter where warm air is not available and the temperature is relatively cold, EVA becomes brittle, and thus the concrete tends to be hollow and cracked. In order to improve the phenomenon, the poly dimethyl diallyl ammonium chloride is grafted and adsorbed with the redispersible latex powder and then reacts and combines with the powdered nitrile butadiene rubber, so that the finally obtained modified latex powder can still show stronger toughness at low temperature, and the phenomena of hollowing and cracking caused by the addition of the latex powder can be avoided. The redispersible latex powder can swell in water to form stable emulsion under the combination of hydrophilic groups and water molecules, and the poly dimethyl diallyl ammonium chloride has strong cohesiveness and hydrolysis resistance and can be adsorbed and grafted by the swelled latex to form a stable aggregate; then combining with powdery nitrile rubber with excellent low-temperature resistance, and carrying out spray drying to obtain the modified latex powder.
4. When the vitrified micro bubbles are used as a heat insulation material and added into concrete, the heat insulation, fire prevention and sound absorption performance of the concrete can be greatly improved, the stability of a product is ensured, and the service life is longer; however, the surface vitrified closed sphere of the vitrified micro bubbles is easy to break, which not only easily causes leakage of a heat insulation system, but also increases the water absorption of concrete, which causes an increase in shrinkage rate, and the shrinkage is a main cause of concrete cracking, so that multi-layer construction and control of the construction thickness of each layer are required during construction to reduce the shrinkage, which increases the workload. Therefore, the surface of the vitrified micro bubbles is improved, the binary phase change solvent with low melting point is prepared by mixing liquid paraffin and lauric acid, the high-hardness boron nitride nano particles are added and dispersed in the binary phase change solvent, and then the boron nitride nano particles are fixed on the surface of the vitrified micro bubbles by adopting a vacuum impregnation method, so that the mechanical enhancement of the surface of the vitrified micro bubbles is realized, and the closure of the surface vitrification of the vitrified micro bubbles is not damaged.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
A construction method for laying and pasting indoor stone materials capable of preventing hollowing comprises the following specific steps:
step 1, prefabricating a stone plate: adding concrete into the prefabricated mould to prepare a prefabricated stone plate;
step 2, cleaning a base layer: sequentially removing impurities, removing oil and leveling the indoor ground base layer;
step 3, setting a leveling layer: designing a leveling layer according to the ground base layer, making corresponding marks, laying the leveling layer according to the marks and maintaining;
step 4, coating an adhesive layer: coating a layer of bonding material on the leveling layer to ensure uniform thickness of the bonding material;
step 5, laying stone plates: paving and sticking the prefabricated stone plate above the bonding layer, and arranging according to a preset scheme;
step 6, filling agent supplement: filling gaps among the laid prefabricated stone plates completely through a filling agent;
and 7, later maintenance: after the filler was completely dried, it was examined whether looseness or voids occurred and repaired.
The prefabricated stone plate is prepared by firstly paving concrete into a prefabricated mould according to a preset height, then paving stone on the concrete, and then curing the concrete for 7-14 days.
The precast stone slab concrete comprises the following components in parts by weight:
30 parts of cement, 30 parts of water, 12 parts of fly ash, 20 parts of aggregate, 15 parts of heat insulation material, 6 parts of modified latex powder and 2.5 parts of polypropylene fiber.
The leveling layer is made of concrete with the same formula as the prefabricated stone plate.
The cement is ordinary portland cement.
The particle size of the fly ash is less than 0.05 mm.
The aggregate comprises coarse aggregate and fine aggregate; the mass ratio of the coarse aggregate to the fine aggregate is 1: 4-5.
The preparation method of the heat insulation material comprises the following steps:
s1, weighing boron nitride nanoparticles, adding the boron nitride nanoparticles into acetone, and ultrasonically dispersing the boron nitride nanoparticles uniformly to obtain a boron nitride nanoparticle dispersion liquid;
wherein the mass ratio of the boron nitride nanoparticles to the acetone is 1: 5-10;
s2, weighing liquid paraffin and lauric acid, mixing, placing in a water bath at 40-60 ℃, stirring until the liquid paraffin and lauric acid are completely changed into liquid, and continuing stirring for 0.1-0.5 h to obtain a mixed solution;
wherein the mass ratio of the liquid paraffin to the lauric acid is 1: 2-4;
s3, adding the boron nitride nano dispersion liquid into the mixed solution while stirring, continuing stirring for 2-10 hours after the addition is finished, then placing the reaction solution under an ice-water bath condition while the reaction solution is hot to obtain a boron nitride composite product, and storing the boron nitride composite product at 0-4 ℃ for later use;
wherein the volume ratio of the boron nitride nano dispersion liquid to the mixed solution is 1: 1.5-3;
s4, weighing the boron nitride composite product, mixing the boron nitride composite product with the vitrified micro bubbles, placing the mixture in a vacuum drying oven, pumping the mixture to a negative pressure, heating the mixture to 40-60 ℃, continuing to perform heat preservation treatment for 1-3 hours after the boron nitride composite product is liquefied, recovering the mixture to normal pressure, filtering the mixture while the mixture is hot, and removing surface liquid by using oil absorption paper to obtain modified vitrified micro bubbles;
wherein the mass ratio of the boron nitride composite product to the vitrified micro bubbles is 2-3: 1;
the preparation method of the modified latex powder comprises the following steps:
s1, weighing poly dimethyl diallyl ammonium chloride, adding the poly dimethyl diallyl ammonium chloride into deionized water, heating to 60-80 ℃, and stirring until the poly dimethyl diallyl ammonium chloride is completely dissolved to obtain a poly dimethyl diallyl ammonium chloride solution;
wherein the mass ratio of the poly dimethyl diallyl ammonium chloride to the deionized water is 1: 6-15;
s2, adding the redispersible latex powder into the poly dimethyl diallyl ammonium chloride solution, uniformly dispersing, pouring into a reaction kettle, heating to 100-150 ℃, sealing and preserving heat for 5-8 h, cooling to room temperature, filtering to obtain a solid, and vacuum drying to obtain a primary modified substance of the latex powder;
wherein the mass ratio of the redispersible latex powder to the poly dimethyl diallyl ammonium chloride solution is 1: 12-18;
s3, weighing powdery nitrile rubber, adding the powdery nitrile rubber into diethylene glycol dibenzoate, stirring the powdery nitrile rubber and the diethylene glycol dibenzoate uniformly, adding the emulsion powder primary modifier and isobutyl triethoxy silicon, performing ultrasonic dispersion on the emulsion powder primary modifier and isobutyl triethoxy silicon uniformly, heating the mixture to 80-100 ℃, performing stirring reaction for 1-4 hours, filtering the mixture while the mixture is hot, taking a solid, washing the solid with acetone for three times, and performing vacuum drying to obtain a modified emulsion powder crude product;
wherein the mass ratio of the powdery nitrile rubber, the diethylene glycol dibenzoate, the primary modified product of the latex powder and the isobutyl triethoxy silicon is 1: 3-10: 4-8: 0.03-0.05;
s4, adding the crude modified latex powder product into deionized water, stirring uniformly, and performing spray drying treatment to obtain modified latex powder;
wherein the mass ratio of the modified emulsion powder crude product to the deionized water is 1: 8-12.
The redispersible latex powder is a copolymer of ethylene and vinyl acetate.
The thickness of the adhesive material coating is 1-3 mm.
The bonding material comprises the following components in parts by weight:
60 parts of modified epoxy resin, 25 parts of poly (trityl methacrylate), 20 parts of glass fiber reinforced plastic powder, 15 parts of talcum powder, 5 parts of polypropylene glycol ether and 3 parts of low-alkali expanding agent.
When the adhesive material is used, the adhesive material and an epoxy resin curing agent are required to be uniformly mixed, and the mass ratio of the adhesive material to the epoxy resin curing agent is 10: 2-5.
The preparation method of the modified epoxy resin comprises the following steps:
s1, weighing gamma-chloropropylmethyldimethoxysilane, adding the gamma-chloropropylmethyldimethoxysilane into absolute ethanol, stirring the mixture uniformly, placing the mixture in a water bath at 50-60 ℃, dropwise adding an ethanol solution of citric acid until the pH value of the liquid is 3.0-5.0, carrying out reflux reaction for 24-48 h, cooling and standing the mixture at room temperature for 8-10 h, filtering the mixture to obtain a solid, washing the solid to be neutral by using dichloromethane, and drying the solid under reduced pressure to obtain a cage-type silane product;
wherein the mass concentration of the citric acid ethanol solution is 10 percent; the mass ratio of the gamma-chloropropylmethyldimethoxysilane to the absolute ethyl alcohol is 1: 5-8;
s2, adding germanium selenide powder into deionized water, performing ultrasonic dispersion until the germanium selenide powder is uniform, adding the cage-type silane product, stirring until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, sealing, placing the reaction kettle in an oven, heating to 150-200 ℃, reacting for 8-12 hours, cooling to room temperature, filtering to obtain a solid, washing with ethanol for three times, washing with deionized water for three times, performing reduced pressure drying, and crushing to a nano shape to obtain modified germanium selenide;
wherein the mass ratio of the germanium selenide powder to the cage-type silane product to the deionized water is 1: 0.2-0.4: 5-10;
s3, adding the modified germanium selenide into epoxy resin, stirring and dispersing uniformly, heating to 40-50 ℃, and stirring for 2-4 hours to obtain modified epoxy resin;
the mass ratio of the modified germanium selenide to the epoxy resin is 1: 10-20.
Example 2
A construction method for laying and pasting indoor stone materials capable of preventing hollowing comprises the following specific steps:
step 1, prefabricating a stone plate: adding concrete into the prefabricated mould to prepare a prefabricated stone plate;
step 2, cleaning a base layer: sequentially removing impurities, removing oil and leveling the indoor ground base layer;
step 3, setting a leveling layer: designing a leveling layer according to the ground base layer, making corresponding marks, laying the leveling layer according to the marks and maintaining;
step 4, coating an adhesive layer: coating a layer of bonding material on the leveling layer to ensure uniform thickness of the bonding material;
step 5, laying stone plates: paving and sticking the prefabricated stone plate above the bonding layer, and arranging according to a preset scheme;
step 6, filling agent supplement: filling gaps among the laid prefabricated stone plates completely through a filling agent;
and 7, later maintenance: after the filler was completely dried, it was examined whether looseness or voids occurred and repaired.
The prefabricated stone plate is prepared by firstly paving concrete into a prefabricated mould according to a preset height, then paving stone on the concrete, and then curing the concrete for 7-14 days.
The precast stone slab concrete comprises the following components in parts by weight:
25 parts of cement, 20 parts of water, 10 parts of fly ash, 16 parts of aggregate, 10 parts of a thermal insulation material, 4 parts of modified latex powder and 2 parts of polypropylene fiber.
The leveling layer is made of concrete with the same formula as the prefabricated stone plate.
The cement is ordinary portland cement.
The particle size of the fly ash is less than 0.05 mm.
The aggregate comprises coarse aggregate and fine aggregate; the mass ratio of the coarse aggregate to the fine aggregate is 1: 4-5.
The preparation method of the heat insulation material comprises the following steps:
s1, weighing boron nitride nanoparticles, adding the boron nitride nanoparticles into acetone, and ultrasonically dispersing the boron nitride nanoparticles uniformly to obtain a boron nitride nanoparticle dispersion liquid;
wherein the mass ratio of the boron nitride nanoparticles to the acetone is 1: 5-10;
s2, weighing liquid paraffin and lauric acid, mixing, placing in a water bath at 40-60 ℃, stirring until the liquid paraffin and lauric acid are completely changed into liquid, and continuing stirring for 0.1-0.5 h to obtain a mixed solution;
wherein the mass ratio of the liquid paraffin to the lauric acid is 1: 2-4;
s3, adding the boron nitride nano dispersion liquid into the mixed solution while stirring, continuing stirring for 2-10 hours after the addition is finished, then placing the reaction solution under an ice-water bath condition while the reaction solution is hot to obtain a boron nitride composite product, and storing the boron nitride composite product at 0-4 ℃ for later use;
wherein the volume ratio of the boron nitride nano dispersion liquid to the mixed solution is 1: 1.5-3;
s4, weighing the boron nitride composite product, mixing the boron nitride composite product with the vitrified micro bubbles, placing the mixture in a vacuum drying oven, pumping the mixture to a negative pressure, heating the mixture to 40-60 ℃, continuing to perform heat preservation treatment for 1-3 hours after the boron nitride composite product is liquefied, recovering the mixture to normal pressure, filtering the mixture while the mixture is hot, and removing surface liquid by using oil absorption paper to obtain modified vitrified micro bubbles;
wherein the mass ratio of the boron nitride composite product to the vitrified micro bubbles is 2-3: 1;
the preparation method of the modified latex powder comprises the following steps:
s1, weighing poly dimethyl diallyl ammonium chloride, adding the poly dimethyl diallyl ammonium chloride into deionized water, heating to 60-80 ℃, and stirring until the poly dimethyl diallyl ammonium chloride is completely dissolved to obtain a poly dimethyl diallyl ammonium chloride solution;
wherein the mass ratio of the poly dimethyl diallyl ammonium chloride to the deionized water is 1: 6-15;
s2, adding the redispersible latex powder into the poly dimethyl diallyl ammonium chloride solution, uniformly dispersing, pouring into a reaction kettle, heating to 100-150 ℃, sealing and preserving heat for 5-8 h, cooling to room temperature, filtering to obtain a solid, and vacuum drying to obtain a primary modified substance of the latex powder;
wherein the mass ratio of the redispersible latex powder to the poly dimethyl diallyl ammonium chloride solution is 1: 12-18;
s3, weighing powdery nitrile rubber, adding the powdery nitrile rubber into diethylene glycol dibenzoate, stirring the powdery nitrile rubber and the diethylene glycol dibenzoate uniformly, adding the emulsion powder primary modifier and isobutyl triethoxy silicon, performing ultrasonic dispersion on the emulsion powder primary modifier and isobutyl triethoxy silicon uniformly, heating the mixture to 80-100 ℃, performing stirring reaction for 1-4 hours, filtering the mixture while the mixture is hot, taking a solid, washing the solid with acetone for three times, and performing vacuum drying to obtain a modified emulsion powder crude product;
wherein the mass ratio of the powdery nitrile rubber, the diethylene glycol dibenzoate, the primary modified product of the latex powder and the isobutyl triethoxy silicon is 1: 3-10: 4-8: 0.03-0.05;
s4, adding the crude modified latex powder product into deionized water, stirring uniformly, and performing spray drying treatment to obtain modified latex powder;
wherein the mass ratio of the modified emulsion powder crude product to the deionized water is 1: 8-12.
The redispersible latex powder is a copolymer of ethylene and vinyl acetate.
The thickness of the adhesive material coating is 1-3 mm.
The bonding material comprises the following components in parts by weight:
40 parts of modified epoxy resin, 20 parts of poly (trityl methacrylate), 15 parts of glass fiber reinforced plastic powder, 10 parts of talcum powder, 3 parts of polypropylene glycol ether and 1 part of low-alkali expanding agent.
When the adhesive material is used, the adhesive material and an epoxy resin curing agent are required to be uniformly mixed, and the mass ratio of the adhesive material to the epoxy resin curing agent is 10: 2-5.
The preparation method of the modified epoxy resin comprises the following steps:
s1, weighing gamma-chloropropylmethyldimethoxysilane, adding the gamma-chloropropylmethyldimethoxysilane into absolute ethanol, stirring the mixture uniformly, placing the mixture in a water bath at 50-60 ℃, dropwise adding an ethanol solution of citric acid until the pH value of the liquid is 3.0-5.0, carrying out reflux reaction for 24-48 h, cooling and standing the mixture at room temperature for 8-10 h, filtering the mixture to obtain a solid, washing the solid to be neutral by using dichloromethane, and drying the solid under reduced pressure to obtain a cage-type silane product;
wherein the mass concentration of the citric acid ethanol solution is 10 percent; the mass ratio of the gamma-chloropropylmethyldimethoxysilane to the absolute ethyl alcohol is 1: 5-8;
s2, adding germanium selenide powder into deionized water, performing ultrasonic dispersion until the germanium selenide powder is uniform, adding the cage-type silane product, stirring until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, sealing, placing the reaction kettle in an oven, heating to 150-200 ℃, reacting for 8-12 hours, cooling to room temperature, filtering to obtain a solid, washing with ethanol for three times, washing with deionized water for three times, performing reduced pressure drying, and crushing to a nano shape to obtain modified germanium selenide;
wherein the mass ratio of the germanium selenide powder to the cage-type silane product to the deionized water is 1: 0.2-0.4: 5-10;
s3, adding the modified germanium selenide into epoxy resin, stirring and dispersing uniformly, heating to 40-50 ℃, and stirring for 2-4 hours to obtain modified epoxy resin;
the mass ratio of the modified germanium selenide to the epoxy resin is 1: 10-20.
Example 3
A construction method for laying and pasting indoor stone materials capable of preventing hollowing comprises the following specific steps:
step 1, prefabricating a stone plate: adding concrete into the prefabricated mould to prepare a prefabricated stone plate;
step 2, cleaning a base layer: sequentially removing impurities, removing oil and leveling the indoor ground base layer;
step 3, setting a leveling layer: designing a leveling layer according to the ground base layer, making corresponding marks, laying the leveling layer according to the marks and maintaining;
step 4, coating an adhesive layer: coating a layer of bonding material on the leveling layer to ensure uniform thickness of the bonding material;
step 5, laying stone plates: paving and sticking the prefabricated stone plate above the bonding layer, and arranging according to a preset scheme;
step 6, filling agent supplement: filling gaps among the laid prefabricated stone plates completely through a filling agent;
and 7, later maintenance: after the filler was completely dried, it was examined whether looseness or voids occurred and repaired.
The prefabricated stone plate is prepared by firstly paving concrete into a prefabricated mould according to a preset height, then paving stone on the concrete, and then curing the concrete for 7-14 days.
The precast stone slab concrete comprises the following components in parts by weight:
35 parts of cement, 40 parts of water, 15 parts of fly ash, 24 parts of aggregate, 20 parts of heat insulation material, 8 parts of modified latex powder and 3 parts of polypropylene fiber.
The leveling layer is made of concrete with the same formula as the prefabricated stone plate.
The cement is ordinary portland cement.
The particle size of the fly ash is less than 0.05 mm.
The aggregate comprises coarse aggregate and fine aggregate; the mass ratio of the coarse aggregate to the fine aggregate is 1: 4-5.
The preparation method of the heat insulation material comprises the following steps:
s1, weighing boron nitride nanoparticles, adding the boron nitride nanoparticles into acetone, and ultrasonically dispersing the boron nitride nanoparticles uniformly to obtain a boron nitride nanoparticle dispersion liquid;
wherein the mass ratio of the boron nitride nanoparticles to the acetone is 1: 5-10;
s2, weighing liquid paraffin and lauric acid, mixing, placing in a water bath at 40-60 ℃, stirring until the liquid paraffin and lauric acid are completely changed into liquid, and continuing stirring for 0.1-0.5 h to obtain a mixed solution;
wherein the mass ratio of the liquid paraffin to the lauric acid is 1: 2-4;
s3, adding the boron nitride nano dispersion liquid into the mixed solution while stirring, continuing stirring for 2-10 hours after the addition is finished, then placing the reaction solution under an ice-water bath condition while the reaction solution is hot to obtain a boron nitride composite product, and storing the boron nitride composite product at 0-4 ℃ for later use;
wherein the volume ratio of the boron nitride nano dispersion liquid to the mixed solution is 1: 1.5-3;
s4, weighing the boron nitride composite product, mixing the boron nitride composite product with the vitrified micro bubbles, placing the mixture in a vacuum drying oven, pumping the mixture to a negative pressure, heating the mixture to 40-60 ℃, continuing to perform heat preservation treatment for 1-3 hours after the boron nitride composite product is liquefied, recovering the mixture to normal pressure, filtering the mixture while the mixture is hot, and removing surface liquid by using oil absorption paper to obtain modified vitrified micro bubbles;
wherein the mass ratio of the boron nitride composite product to the vitrified micro bubbles is 2-3: 1;
the preparation method of the modified latex powder comprises the following steps:
s1, weighing poly dimethyl diallyl ammonium chloride, adding the poly dimethyl diallyl ammonium chloride into deionized water, heating to 60-80 ℃, and stirring until the poly dimethyl diallyl ammonium chloride is completely dissolved to obtain a poly dimethyl diallyl ammonium chloride solution;
wherein the mass ratio of the poly dimethyl diallyl ammonium chloride to the deionized water is 1: 6-15;
s2, adding the redispersible latex powder into the poly dimethyl diallyl ammonium chloride solution, uniformly dispersing, pouring into a reaction kettle, heating to 100-150 ℃, sealing and preserving heat for 5-8 h, cooling to room temperature, filtering to obtain a solid, and vacuum drying to obtain a primary modified substance of the latex powder;
wherein the mass ratio of the redispersible latex powder to the poly dimethyl diallyl ammonium chloride solution is 1: 12-18;
s3, weighing powdery nitrile rubber, adding the powdery nitrile rubber into diethylene glycol dibenzoate, stirring the powdery nitrile rubber and the diethylene glycol dibenzoate uniformly, adding the emulsion powder primary modifier and isobutyl triethoxy silicon, performing ultrasonic dispersion on the emulsion powder primary modifier and isobutyl triethoxy silicon uniformly, heating the mixture to 80-100 ℃, performing stirring reaction for 1-4 hours, filtering the mixture while the mixture is hot, taking a solid, washing the solid with acetone for three times, and performing vacuum drying to obtain a modified emulsion powder crude product;
wherein the mass ratio of the powdery nitrile rubber, the diethylene glycol dibenzoate, the primary modified product of the latex powder and the isobutyl triethoxy silicon is 1: 3-10: 4-8: 0.03-0.05;
s4, adding the crude modified latex powder product into deionized water, stirring uniformly, and performing spray drying treatment to obtain modified latex powder;
wherein the mass ratio of the modified emulsion powder crude product to the deionized water is 1: 8-12.
The redispersible latex powder is a copolymer of ethylene and vinyl acetate.
The thickness of the adhesive material coating is 1-3 mm.
The bonding material comprises the following components in parts by weight:
80 parts of modified epoxy resin, 30 parts of poly (trityl methacrylate), 25 parts of glass fiber reinforced plastic powder, 20 parts of talcum powder, 6 parts of polypropylene glycol ether and 5 parts of low-alkali expanding agent.
When the adhesive material is used, the adhesive material and an epoxy resin curing agent are required to be uniformly mixed, and the mass ratio of the adhesive material to the epoxy resin curing agent is 10: 2-5.
The preparation method of the modified epoxy resin comprises the following steps:
s1, weighing gamma-chloropropylmethyldimethoxysilane, adding the gamma-chloropropylmethyldimethoxysilane into absolute ethanol, stirring the mixture uniformly, placing the mixture in a water bath at 50-60 ℃, dropwise adding an ethanol solution of citric acid until the pH value of the liquid is 3.0-5.0, carrying out reflux reaction for 24-48 h, cooling and standing the mixture at room temperature for 8-10 h, filtering the mixture to obtain a solid, washing the solid to be neutral by using dichloromethane, and drying the solid under reduced pressure to obtain a cage-type silane product;
wherein the mass concentration of the citric acid ethanol solution is 10 percent; the mass ratio of the gamma-chloropropylmethyldimethoxysilane to the absolute ethyl alcohol is 1: 5-8;
s2, adding germanium selenide powder into deionized water, performing ultrasonic dispersion until the germanium selenide powder is uniform, adding the cage-type silane product, stirring until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, sealing, placing the reaction kettle in an oven, heating to 150-200 ℃, reacting for 8-12 hours, cooling to room temperature, filtering to obtain a solid, washing with ethanol for three times, washing with deionized water for three times, performing reduced pressure drying, and crushing to a nano shape to obtain modified germanium selenide;
wherein the mass ratio of the germanium selenide powder to the cage-type silane product to the deionized water is 1: 0.2-0.4: 5-10;
s3, adding the modified germanium selenide into epoxy resin, stirring and dispersing uniformly, heating to 40-50 ℃, and stirring for 2-4 hours to obtain modified epoxy resin;
the mass ratio of the modified germanium selenide to the epoxy resin is 1: 10-20.
Comparative example
The concrete for prefabricating the stone slab comprises the following components in parts by weight:
30 parts of cement, 30 parts of water, 12 parts of fly ash, 20 parts of aggregate, 15 parts of heat-insulating material, 6 parts of redispersible latex powder and 2.5 parts of polypropylene fiber.
The cement is ordinary portland cement.
The particle size of the fly ash is less than 0.05 mm.
The aggregate comprises coarse aggregate and fine aggregate; the mass ratio of the coarse aggregate to the fine aggregate is 1: 4-5.
The heat-insulating material is boron nitride nanoparticles.
The redispersible latex powder is a copolymer of ethylene and vinyl acetate.
The bonding material comprises the following components in parts by weight:
60 parts of epoxy resin, 25 parts of poly (trityl methacrylate), 20 parts of glass fiber reinforced plastic powder, 15 parts of talcum powder, 5 parts of polypropylene glycol ether and 3 parts of low-alkali expanding agent.
When the adhesive material is used, the adhesive material and an epoxy resin curing agent are required to be uniformly mixed, and the mass ratio of the adhesive material to the epoxy resin curing agent is 10: 2-5.
In order to more clearly illustrate the invention, the performance of the concrete and the bonding material prepared in the embodiments 1 to 3 and the comparative example of the invention is tested;
wherein, the concrete is detected to have a drying shrinkage value according to the GB/T11972-1997 standard, and is detected to have a compressive strength according to the GB/T50081-2002 standard; the bonding material is detected according to the standards of GB/T23441-2009 and GB 18445-2009;
the results are shown in tables 1 and 2:
table 1 performance testing of concrete of prefabricated stone slabs
| Example 1 | Example 2 | Example 3 | Comparative example | |
| Compressive strength/MPa, 28d | 142.5 | 136.8 | 140.4 | 71.6 |
| Crack resistance rating/grade | I | I | I | III |
| Drying shrinkage/μm. m-1，21d | 536 | 564 | 543 | 937 |
| Empty drum ratio/%, 90d | ＜1 | ＜1 | ＜1 | 4.2 |
TABLE 2 Performance testing of the Binder materials
| Example 1 | Example 2 | Example 3 | Comparative example | |
| Peel strength/N.mm-1 | 6.8 | 6.2 | 6.7 | 4.1 |
| 7d peeling strength/N.mm for water treatment-1 | 4.2 | 3.7 | 3.8 | 1.6 |
| Penetration thickness/cm | 2.6 | 2.5 | 2.7 | 1.2 |
| Ratio of secondary impermeability pressure/%) | 143 | 140 | 141 | 107 |
As can be seen from Table 1, the compression strength and the crack resistance grade of the concrete precast stone slab prepared in the embodiments 1 to 3 of the invention are far better than those of the comparative example, and the drying shrinkage and the hollowing rate are far lower than those of the comparative example; the peel strength of the bonding material, the 7d water treatment peel strength, the penetration thickness and the secondary permeation-resistant pressure ratio are all superior to those of the comparative example to a certain extent.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The construction method for laying and pasting the anti-hollowing indoor stone is characterized by comprising the following specific steps:
step 1, prefabricating a stone plate: adding concrete into the prefabricated mould to prepare a prefabricated stone plate;
step 2, cleaning a base layer: sequentially removing impurities, removing oil and leveling the indoor ground base layer;
step 3, setting a leveling layer: designing a leveling layer according to the ground base layer, making corresponding marks, laying the leveling layer according to the marks and maintaining;
step 4, coating an adhesive layer: coating a layer of bonding material on the leveling layer to ensure uniform thickness of the bonding material;
step 5, laying stone plates: paving and sticking the prefabricated stone plate above the bonding layer, and arranging according to a preset scheme;
step 6, filling agent supplement: filling gaps among the laid prefabricated stone plates completely by using a filling agent;
and 7, later maintenance: after the filler is completely dried, checking whether looseness or gaps occur or not, and repairing;
the concrete for prefabricating the stone plate comprises the following components in parts by weight:
25-35 parts of cement, 20-40 parts of water, 10-15 parts of fly ash, 16-24 parts of aggregate, 10-20 parts of a thermal insulation material, 4-8 parts of modified latex powder and 2-3 parts of polypropylene fiber;
the leveling layer is made of concrete with the same formula as the prefabricated stone plate;
the preparation method of the heat insulation material comprises the following steps:
s1, weighing boron nitride nanoparticles, adding the boron nitride nanoparticles into acetone, and ultrasonically dispersing the boron nitride nanoparticles uniformly to obtain a boron nitride nanoparticle dispersion liquid;
wherein the mass ratio of the boron nitride nanoparticles to the acetone is 1: 5-10;
s2, weighing liquid paraffin and lauric acid, mixing, placing in a water bath at 40-60 ℃, stirring until the liquid paraffin and lauric acid are completely changed into liquid, and continuing stirring for 0.1-0.5 h to obtain a mixed solution;
wherein the mass ratio of the liquid paraffin to the lauric acid is 1: 2-4;
s3, adding the boron nitride nano dispersion liquid into the mixed solution while stirring, continuing stirring for 2-10 hours after the addition is finished, then placing the reaction solution under an ice-water bath condition while the reaction solution is hot to obtain a boron nitride composite product, and storing the boron nitride composite product at 0-4 ℃ for later use;
wherein the volume ratio of the boron nitride nano dispersion liquid to the mixed solution is 1: 1.5-3;
s4, weighing the boron nitride composite product, mixing the boron nitride composite product with the vitrified micro bubbles, placing the mixture in a vacuum drying oven, pumping the mixture to a negative pressure, heating the mixture to 40-60 ℃, continuing to perform heat preservation treatment for 1-3 hours after the boron nitride composite product is liquefied, recovering the mixture to normal pressure, filtering the mixture while the mixture is hot, and removing surface liquid by using oil absorption paper to obtain modified vitrified micro bubbles;
wherein the mass ratio of the boron nitride composite product to the vitrified micro bubbles is 2-3: 1.
2. The construction method of the hollowing-proof indoor stone paving and pasting according to the claim 1, wherein the prefabricated stone slab is prepared by firstly paving concrete into a prefabricated mold according to a preset height, then paving stone on the concrete, and then curing the concrete for 7-14 days.
3. The construction method of an anti-hollowing indoor stone pavement according to claim 1, wherein the aggregate comprises coarse aggregate and fine aggregate; the mass ratio of the coarse aggregate to the fine aggregate is 1: 4-5.
4. The construction method of the anti-hollowing indoor stone paving and pasting as claimed in claim 1, wherein the preparation method of the modified latex powder is as follows:
s1, weighing poly dimethyl diallyl ammonium chloride, adding the poly dimethyl diallyl ammonium chloride into deionized water, heating to 60-80 ℃, and stirring until the poly dimethyl diallyl ammonium chloride is completely dissolved to obtain a poly dimethyl diallyl ammonium chloride solution;
wherein the mass ratio of the poly dimethyl diallyl ammonium chloride to the deionized water is 1: 6-15;
s2, adding the redispersible latex powder into the poly dimethyl diallyl ammonium chloride solution, uniformly dispersing, pouring into a reaction kettle, heating to 100-150 ℃, sealing and preserving heat for 5-8 h, cooling to room temperature, filtering to obtain a solid, and vacuum drying to obtain a primary modified substance of the latex powder;
wherein the mass ratio of the redispersible latex powder to the poly dimethyl diallyl ammonium chloride solution is 1: 12-18;
s3, weighing powder nitrile rubber, adding the powder nitrile rubber into diethylene glycol dibenzoate, stirring the mixture until the mixture is uniform, adding the emulsion powder primary modification and isobutyl triethoxysilane, ultrasonically dispersing the mixture until the mixture is uniform, heating the mixture to 80-100 ℃, stirring the mixture for reaction for 1-4 hours, filtering the mixture while the mixture is hot, taking the solid, washing the solid with acetone for three times, and drying the solid in vacuum to obtain a modified emulsion powder crude product;
wherein the mass ratio of the powdery nitrile rubber, the diethylene glycol dibenzoate, the primary modified product of the latex powder and the isobutyl triethoxy silicon is 1: 3-10: 4-8: 0.03-0.05;
s4, adding the crude modified latex powder product into deionized water, stirring uniformly, and performing spray drying treatment to obtain modified latex powder;
wherein the mass ratio of the modified emulsion powder crude product to the deionized water is 1: 8-12.
5. The construction method of the anti-hollowing indoor stone paving and pasting material as claimed in claim 1, wherein the bonding material comprises the following components in parts by weight:
40-80 parts of modified epoxy resin, 20-30 parts of poly (triphenylmethyl methacrylate), 15-25 parts of glass fiber reinforced plastic powder, 10-20 parts of talcum powder, 3-6 parts of polypropylene glycol ether and 1-5 parts of low-alkali expanding agent.
6. The construction method of the anti-hollowing indoor stone paving and pasting material as claimed in claim 1, wherein the bonding material is required to be uniformly mixed with the epoxy resin curing agent when in use, and the mass ratio of the bonding material to the epoxy resin curing agent is 10: 2-5.
7. The construction method of the anti-hollowing indoor stone paving and pasting according to the claim 5, characterized in that the preparation method of the modified epoxy resin is as follows:
s1, weighing gamma-chloropropylmethyldimethoxysilane, adding the gamma-chloropropylmethyldimethoxysilane into absolute ethanol, stirring the mixture uniformly, placing the mixture in a water bath at 50-60 ℃, dropwise adding an ethanol solution of citric acid until the pH of the liquid is = 3.0-5.0, carrying out reflux reaction for 24-48 h, cooling and standing the mixture at room temperature for 8-10 h, filtering the mixture to obtain a solid, washing the solid to be neutral by using dichloromethane, and drying the solid under reduced pressure to obtain a cage-type silane product;
wherein the mass concentration of the citric acid ethanol solution is 10 percent; the mass ratio of the gamma-chloropropylmethyldimethoxysilane to the absolute ethyl alcohol is 1: 5-8;
s2, adding germanium selenide powder into deionized water, performing ultrasonic dispersion until the germanium selenide powder is uniform, adding the cage-type silane product, stirring until the mixture is uniform, pouring the mixture into a reaction kettle with a polytetrafluoroethylene lining, sealing, placing the reaction kettle in an oven, heating to 150-200 ℃, reacting for 8-12 hours, cooling to room temperature, filtering to obtain a solid, washing with ethanol for three times, washing with deionized water for three times, performing reduced pressure drying, and crushing to a nano shape to obtain modified germanium selenide;
wherein the mass ratio of the germanium selenide powder to the cage-type silane product to the deionized water is 1: 0.2-0.4: 5-10;
s3, adding the modified germanium selenide into epoxy resin, stirring and dispersing uniformly, heating to 40-50 ℃, and stirring for 2-4 hours to obtain modified epoxy resin;
the mass ratio of the modified germanium selenide to the epoxy resin is 1: 10-20.
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| CN102182130A (en) * | 2011-03-28 | 2011-09-14 | 中冶宝钢技术服务有限公司 | High-strength glass decorative steel slag concrete prefabricated art stone and manufacture method thereof |
| CA2746237A1 (en) * | 2011-07-11 | 2013-01-11 | Christopher M. Collins | Sound and thermal insulating manufactured stone veneer, pre-cast concrete panels and mortar |
| CN103360104A (en) * | 2013-06-27 | 2013-10-23 | 永升建设集团有限公司 | Expanded and vitrified small ball-fiber reinforced foamed concrete |
| CN107033548A (en) * | 2017-05-14 | 2017-08-11 | 南通德瑞森复合材料有限公司 | A kind of energy saving building fiberglass epoxy resin |
| CN111424937A (en) * | 2020-04-27 | 2020-07-17 | 浙江天苑景观建设有限公司 | Construction method for laying indoor stone materials capable of preventing hollowing |
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Denomination of invention: Construction method for indoor stone paving of air defense drum Effective date of registration: 20211023 Granted publication date: 20210803 Pledgee: Zhejiang Taishun Rural Commercial Bank Co.,Ltd. Chengdong sub branch Pledgor: RUIZHOU CONSTRUCTION GROUP CO.,LTD. Registration number: Y2021330002001 |
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