CN113530242B - Environment-friendly waterproof heat-preservation construction method - Google Patents
Environment-friendly waterproof heat-preservation construction method Download PDFInfo
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- CN113530242B CN113530242B CN202110844216.6A CN202110844216A CN113530242B CN 113530242 B CN113530242 B CN 113530242B CN 202110844216 A CN202110844216 A CN 202110844216A CN 113530242 B CN113530242 B CN 113530242B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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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
- C04B2111/40—Porous or lightweight materials
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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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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Abstract
The invention discloses an environment-friendly waterproof heat-insulation construction method which mainly comprises the steps of leveling a protruding part of a building base layer, cleaning dust by using a brush, washing with water, and naturally drying; conveying the foam concrete slurry to a construction area by using a pipeline pump, pouring by gravity flow, and leveling by using a scraping bar to finish the operation; the foam concrete comprises raw materials of cement, fly ash, a formaldehyde condensate of sodium methyl naphthalene sulfonate, an accelerating agent, xanthan gum and heat-insulating glass beads. The foam concrete slurry prepared by the specific method has excellent heat insulation performance and waterproof performance.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an environment-friendly waterproof heat-preservation construction method.
Background
Cement is a common hydraulic inorganic cementitious material in powder form. Adding water into cement, stirring to obtain flowing slurry, and performing hardening reaction in air; some special cements can even undergo a hardening reaction in water. The cement has the capability of tightly and firmly combining inorganic mineral raw materials such as sand and stone. In the prior art, a member processed by the cement obtained by the traditional method has the advantages of high compressive strength, good aging resistance and the like, but does not have sufficient heat insulation performance, and the cement obtained by the prior art is often not resistant to water immersion and poor in impermeability, so that the cement can not meet the more and more rigorous requirements in the modern times.
The situation of shortage of global energy, resources and raw material resources is more and more tense, and practitioners of relevant industries all over the world are focusing on research, development and application of building energy-saving technology. At present, with the continuous deepening and increasing of the urbanization construction of China, the occupied area of the building is larger and larger, and higher requirements and standards are provided for heat insulation, energy conservation, water resistance and impermeability of the building, which obviously becomes a major problem in the industry. Most of the existing methods are to paste various glass films with heat insulation effect on the outer wall of the building so as to achieve the purposes of heat insulation, heat preservation and water resistance, but the existing methods need to improve the building, and the heat insulation films and the heat insulation coating of the outer wall need to be replaced regularly, so that the time and labor are wasted, and the economic benefit is poor. Moreover, the heat insulation effect of the mode is not ideal. In addition, the heat insulation wall materials in the prior art are all prepared by adding heat insulation substances into cement, but the heat insulation wall materials still do not achieve good effects.
Patent CN105271998A provides a self-insulation cement pile material composition and a preparation method of the self-insulation cement pile, which uses cement, polyester fiber, sodium citrate, polypropylene fiber, sodium dehydroacetate, hydroxypropyl methylcellulose, rubber powder, calcium formate and water as raw materials, but the heat insulation effect is poor, the cost is high, the stability in use is poor, and the problems of water resistance and impermeability are not solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an environment-friendly waterproof heat-preservation construction method.
In order to solve the technical problems, the invention adopts the technical scheme that:
the environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: and (4) delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar.
The preferable scheme is that the environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 10-12h after 20-25h, wherein the dosage is 0.4-1L/m2And maintaining for 4-7 days.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting cement, fly ash, formaldehyde condensate of methyl naphthalene sodium sulfonate, accelerating agent, xanthan gum, heat-insulating glass beads and water into a stirrer, and stirring to obtain cement paste;
k2, putting a foaming agent, a foaming stabilizer and water into a hydraulic foaming machine, and foaming to obtain foam;
k3 mixing and stirring the cement paste and the foam to obtain the foam concrete paste.
The heat is transmitted in the solid material in the form of phonons, the existence of the foam enables the cement blank to contain a large number of cavities which are randomly arranged, the interfaces of the cavities become inevitable 'barriers' when the phonons are transmitted, namely, the transmission of the phonons is hindered, and therefore, the heat insulation performance of the material can be enhanced in a mode of hindering the heat transmission; in addition, the air in the cavity is a poor heat conductor with high specific heat capacity and low heat conductivity coefficient, so that the air has certain heat insulation effect. In addition, the size effect of a specific size exists between the size of the heat-preservation glass bead prepared by the specific method of the invention and the size of the foam cavity, and the heat-preservation glass bead has a synergistic relationship of one plus one and more than two for reflecting phonons, so that the heat-preservation and heat-insulation capability of the obtained cement blank is further enhanced.
In a preferred embodiment, the preparation method of the foamed concrete slurry comprises the following steps:
k1 putting 85-110 parts by weight of cement, 5-20 parts by weight of fly ash, 1-3 parts by weight of formaldehyde condensate of sodium methylnaphthalenesulfonate, 1-3 parts by weight of accelerating agent, 3-7 parts by weight of xanthan gum, 15-20 parts by weight of heat-insulating glass beads and 35-50 parts by weight of water into a stirrer at the temperature of 20-30 ℃, and stirring for 5-20min at the rotating speed of 100-250rpm to obtain cement paste;
k2 placing 2-4 parts by weight of foaming agent, 0.1-0.3 part by weight of foaming stabilizer and 40-60 parts by weight of water into a hydraulic foaming machine at 20-30 ℃ for foaming for 5-15min to obtain foam;
k3 mixing the cement paste and the foam at 20-30 ℃ and stirring at the rotating speed of 60-100rpm for 5-10min to obtain the foam concrete paste.
In a preferred embodiment, the accelerating agent is sodium metaaluminate.
The foaming agent is at least one of sodium vinyl sulfonate and sodium caseinate. In a preferable scheme, the foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of (5-7) to (1-3).
According to the invention, the sodium vinylsulfonate and the sodium caseinate are synergistically used as the compound foaming agent to obtain abundant, durable and uniform-size foams, so that the cement has good uniformity after being formed, and cracking and water seepage or heat insulation failure in service are avoided.
In a preferred embodiment, the foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, Natrii sulfas, soda ash, sepiolite and vermiculite, pulverizing, and sieving to obtain blank;
l2, putting the blank into a swelling furnace, and carrying out vitrification swelling to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water, and dispersing by ultrasonic wave to obtain modified emulsion;
and L4, mixing the glass beads and the modified emulsion, reacting, filtering and drying to obtain the heat-preservation glass beads.
The method comprises the steps of blending bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite, crushing, puffing to obtain tiny glass beads, carrying out surface modification on the tiny glass beads by using modified emulsion prepared by a specific formula under ultrahigh pressure, reducing lattice distortion energy and elastic strain energy between two phase interfaces by improving the coherent relationship between a precipitation phase (the heat-preservation glass beads) and a matrix phase (namely a cement system in the invention), and reducing the internal stress of a formed cement block, so that the unfavorable changes of macroscopic visible cracking, shrinkage and the like during service of the cement block are avoided, and the leakage phenomenon possibly occurring when the cement block meets water is avoided; moreover, the heat-insulating glass beads prepared by the specific method have low thermal conductivity, and the thermal conductivity of the whole system can be reduced by doping the heat-insulating glass beads into a cement matrix, so that the heat-insulating effect is realized.
Wherein the bentonite, the calcite, the fluorite,The invention adds sepiolite and vermiculite into the common raw materials for auxiliary sintering, thus obtaining the glass beads with uniform quality and smaller heat conductivity coefficient. The sepiolite is soft and smooth in texture, has good adsorbability, can adsorb some impurities in the common raw materials, and improves the sintering quality; the vermiculite has a fine air interlayer under the action of roasting expansion, the volume of the vermiculite can be rapidly expanded by 6-20 times, and the specific gravity of the vermiculite after high-temperature roasting expansion is 60-180kg/m3Has strong heat preservation and heat insulation performance.
In a preferred embodiment, the preparation method of the heat-insulating glass beads comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of (35-38), (22-26), (2-3), (11-14), (0.2-0.5), (0.2-0.3), (19-23) and (5-8), crushing and sieving with a sieve of 400 meshes to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling at 1350-1312 ℃ for 22-30s to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, a silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water according to the mass ratio of (11-13), (15-18), (1.5-2), (0.9-1.2), (8.5-11), (0.6-0.8), (0.02-0.06), (0.6-0.8), (2.3-3), (0.2-0.4), (23-25) and dispersing for 65-80min at 80-85 ℃ by ultrasonic waves with the power of 300-320W and the frequency of 38-42kHz to obtain a modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1 (8-12), reacting for 8-10h under the conditions of 230 ℃ at 220-.
The short-chain dicarboxyl structure of oxalic acid and the coconut oil fatty acid diacetyl amide can enhance the fusion degree between hydrophobic raw materials and water in the modified emulsion, and avoid respective accumulation of the raw materials, so that the reaction rate is greatly slowed down. Moreover, the coconut oil fatty acid diethylamide also has the characteristics of good foaming and foam stabilization, and can synergistically enhance the dispersibility of the bubble cavity in the foam concrete slurry with the foam, so that the cement has good uniformity after being formed, and cracking and water seepage or heat insulation failure in service is avoided.
The silane coupling agent is at least one of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane. In a preferred embodiment, the silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of (1-5) to (1-5).
The fluorine-containing acrylate is at least one of N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate. In a preferred embodiment, the fluorinated acrylate is N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate which are mixed according to the mass ratio of (1-3) to (1-3). In a more preferred embodiment, the fluoroacrylate is a mixture of N-ethyl perfluorooctylsulfonamide ethyl acrylate and perfluoroalkylethyl methacrylate in a mass ratio of 3: 2.
The phthalate is at least one of diisobutyl phthalate and dibutoxyethyl phthalate. In a preferred embodiment, the phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Ion exchange is carried out between myristyl benzyl dimethyl ammonium chloride and the glass beads doped with vermiculite, so that hydrophobic groups are introduced on the surfaces of the glass beads, and then polyester resin and polyvinyl acetate are grafted on the surfaces of the glass beads through the silane coupling agent, so that the surfaces of the glass beads and capillary tension in internal cavities of cement generated by foam are modified, the compatibility of the heat-insulating glass beads in a cement matrix is enhanced, and water seepage and water leakage are resisted through the capillary tension. The polyester resin is a common adhesive in the concrete industry, but the problems of large shrinkage, low adhesive toughness and poor water resistance exist when the polyester resin is used alone, so the polyester resin is combined with triethylene glycol diheptanoate and the fluorine-containing acrylate to solve the problems: the N-ethyl perfluorooctyl sulfamide ethyl acrylate and the perfluoroalkyl ethyl methacrylate have hydrogen bonds between negative electricity centers and strength which are composed of fluorine elements and oxygen elements which are contained in triethylene glycol diheptanoate, and the ultrahigh pressure treatment provides a dynamic driving force required by the reaction, so that the interlacing relation between branched chains and main carbon chains in polyester resin is enhanced, the shrinkage and even cracks caused by subsequent relaxation deformation are reduced, and the heat retention property and the waterproof and anti-permeability of the formed cement blank are improved. The acyloxy contained in the adopted silane coupling agent has good affinity relation with ester bonds in polyvinyl acetate, so that the whole warm-keeping glass bead is in a lower energy state and has good stability and service reliability.
The invention has the beneficial effects that:
1. the invention provides an environment-friendly waterproof heat-preservation construction method which comprises two processes of base layer treatment and cement layer pouring, wherein the foam concrete slurry prepared by the specific method of the invention has good heat-preservation effect and waterproof and anti-permeability effect.
2. The foam concrete slurry is prepared with cement, flyash, formaldehyde condensate of methyl naphthalene sodium sulfonate, heat insulating glass bead and other material and through curing to form cement blank with high heat insulating capacity and obvious waterproof and impervious effect.
3. The heat-insulating glass bead is prepared with bentonite, calcite, fluorite, borocalcite, mirabilite, sodium carbonate, sepiolite, vermiculite, etc. as material and has low heat conductivity, high compatibility with cement matrix, capacity of improving the capillary tension of cement body and thus raised water and seepage resisting capacity.
Detailed Description
The above summary of the present invention is described in further detail below with reference to specific embodiments, but it should not be understood that the scope of the above subject matter of the present invention is limited to the following examples.
Introduction of some raw materials in this application:
cement from the Henan Hao building materials Limited, magnesia content: 1.9 wt.%, fineness of cement: 375 mesh, loss on ignition: 0.1 wt.%, strength grade: 62.5R, initial setting time: 30min, final setting time: 4h, compressive strength: 66MPa, performance standard: GB/T201-2015.
Fly ash from shijiazhuang shilin mineral products ltd, density: 2.45g/cm3The compressive strength is as follows: 7MPa, particle size: 120 μm.
Formaldehyde condensate of sodium methylnaphthalenesulfonate, CAS: 9084-06-4, available from mairei chemical technologies, inc, molecular weight: 3200.
xanthan gum, CAS: 11078-31-2 from Hebei Baiwei Biotech Co., Ltd, Specification: technical grade, molecular weight: 120 ten thousand.
Sodium caseinate, CAS: 9005-46-3, from Michelle chemical technology, Shanghai, molecular weight: 27 ten thousand.
Bentonite, CAS: 1302-78-9 from mairei chemical technologies, inc, particle size: 400 meshes.
Calcite, CAS: 13397-26-7 from Guanao Biotech, Inc., Hubei, particle size: 300 meshes.
Fluorite, from the tenglong mineral processing plant of lingshou county, particle size: 300 mesh, calcium fluoride content: 92 wt.%, whiteness: 80.
borocalcite, available from osaka bridge chemical limited, specification: 250 meshes.
Mirabilite, from the chemical limited of kunfeng, south china, with the specification: 400 meshes.
Soda ash, CAS: 497-19-8, available from Shandong Xin hongfeng New Material science and technology Co.
Sepiolite, CAS: 63800-37-3 from Hebei Hemiguang mineral products, Inc., particle size: 150 meshes.
Vermiculite, CAS: 1318-00-9 from gazette mineral products ltd, grain size: 80 meshes.
Polyester resin, CAS: 25135-73-3, from Guanao Biotech limited, Hubei, molecular weight: 6 ten thousand.
Polyvinyl acetate, CAS: 9003-20-7, from Gallery land and insulation materials, molecular weight: 1.1 ten thousand.
3-methacryloxypropylmethyldimethoxysilane, CAS: 14513-34-9 from Michelle chemical technology, Inc. of Shanghai.
Acryloyloxymethyl trimethoxysilane, CAS: 21134-38-3, from Kaiser chemical Co., Ltd.
N-ethyl perfluorooctylsulfonamide ethyl acrylate, CAS: 423-82-5 from mairei chemical technologies, inc.
Perfluoroalkylethyl methacrylate, CAS: 65530-66-7 from Hubei Xin run chemical Co., Ltd.
Diisobutylphthalate, CAS: 84-69-5 from Michelle chemical technology, Inc. of Shanghai.
Dibutoxy ethyl phthalate, CAS: 117-83-9 from mairei chemical technologies, inc.
Myristyl benzyl dimethyl ammonium chloride, CAS: 139-08-2 from mairei chemical technology, inc.
Triethylene glycol diheptanoate, CAS: 7434-40-4 from Kaiser chemical Co., Ltd.
Coconut oil fatty acid diacetylamide, CAS: 61791-31-9 from Jinan cloud chemical Limited.
Example 1
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of 37:24:3:13:0.4:0.3:22:7, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling for 25s at 1310 ℃ to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, a silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water according to the mass ratio of 12:17:2:1.2:10:0.7:0.05:0.7:2.7:0.3:24, and dispersing at 85 ℃ for 70min by ultrasonic waves with the power of 300W and the frequency of 40kHz to obtain modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1:10, reacting for 9h at 230 ℃ and under the pressure of 840MPa, filtering, and drying for 5h at 110 ℃ and under the pressure of 50kPa to obtain the heat-preservation glass beads.
The silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of 2: 5.
The fluorine-containing acrylate is a mixture of N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate in a mass ratio of 3: 2.
The phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Example 2
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of 37:24:3:13:0.4:0.3:22:7, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling for 25s at 1310 ℃ to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, a silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water according to the mass ratio of 12:17:2:1.2:10:0.7:0.05:0.7:2.7:0.3:24, and dispersing at 85 ℃ for 70min by ultrasonic waves with the power of 300W and the frequency of 40kHz to obtain modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1:10, reacting for 9h at 230 ℃ and under the pressure of 840MPa, filtering, and drying for 5h at 110 ℃ and under the pressure of 50kPa to obtain the heat-preservation glass beads.
The silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of 2: 5.
The fluorine-containing acrylate is N-ethyl perfluorooctyl sulfonamide ethyl acrylate.
The phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Example 3
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is a mixture of sodium vinyl sulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of 37:24:3:13:0.4:0.3:22:7, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling for 25s at 1310 ℃ to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, a silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water according to the mass ratio of 12:17:2:1.2:10:0.7:0.05:0.7:2.7:0.3:24, and dispersing at 85 ℃ for 70min by ultrasonic waves with the power of 300W and the frequency of 40kHz to obtain modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1:10, reacting for 9h at 230 ℃ and under the pressure of 840MPa, filtering, and drying for 5h at 110 ℃ and under the pressure of 50kPa to obtain the heat-preservation glass beads.
The silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of 2: 5.
The fluorine-containing acrylate is perfluoroalkyl ethyl methacrylate.
The phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Example 4
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of 37:24:3:13:0.4:0.3:22:7, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling for 25s at 1310 ℃ to obtain glass beads;
l3 mixing polyvinyl acetate, silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water according to the mass ratio of 17:2:1.2:10:0.7:0.05:0.7:2.7:0.3:24, and dispersing at 85 ℃ for 70min by ultrasonic waves with the power of 300W and the frequency of 40kHz to obtain modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1:10, reacting for 9h at 230 ℃ and under the pressure of 840MPa, filtering, and drying for 5h at 110 ℃ and under the pressure of 50kPa to obtain the heat-preservation glass beads.
The silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of 2: 5.
The fluorine-containing acrylate is a mixture of N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate in a mass ratio of 3: 2.
The phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Example 5
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of 37:24:3:13:0.4:0.3:22:7, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling for 25s at 1310 ℃ to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, a silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, coconut oil fatty acid diethylamide and water according to the mass ratio of 12:17:2:1.2:10:0.7:0.05:0.7:0.3:24, and dispersing for 70min at 85 ℃ by using ultrasonic waves with the power of 300W and the frequency of 40kHz to obtain modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1:10, reacting for 9h at 230 ℃ and under the pressure of 840MPa, filtering, and drying for 5h at 110 ℃ and under the pressure of 50kPa to obtain the heat-preservation glass beads.
The silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of 2: 5.
The fluorine-containing acrylate is a mixture of N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate in a mass ratio of 3: 2.
The phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Example 6
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerator is sodium metaaluminate.
The foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of 37:24:3:13:0.4:0.3:22:7, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 the above-mentioned blank was put into a swelling furnace and vitrified at 1310 ℃ for 25 seconds to obtain the above-mentioned heat-insulating glass beads.
Example 7
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite and soda ash according to the mass ratio of 37:24:3:13:0.4:0.3, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling for 25s at 1310 ℃ to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, a silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water according to the mass ratio of 12:17:2:1.2:10:0.7:0.05:0.7:2.7:0.3:24, and dispersing at 85 ℃ for 70min by ultrasonic waves with the power of 300W and the frequency of 40kHz to obtain modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1:10, reacting for 9h at 230 ℃ and under the pressure of 840MPa, filtering, and drying for 5h at 110 ℃ and under the pressure of 50kPa to obtain the heat-preservation glass beads.
The silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of 2: 5.
The fluorine-containing acrylate is a mixture of N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate in a mass ratio of 3: 2.
The phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Example 8
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is a mixture of sodium vinylsulfonate and sodium caseinate in a mass ratio of 7: 1.
The foaming stabilizer is calcium stearate.
Example 9
The environment-friendly waterproof heat-preservation construction method comprises the following steps:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foam concrete slurry to a construction area by using a pipeline pump, pouring by self-flowing, and leveling by using a scraping bar; watering for 1 time every 12h after 24h, wherein the dosage is 0.5L/m2And maintaining for 5 d.
The preparation method of the foam concrete slurry comprises the following steps:
k1 putting 100 parts by weight of cement, 10 parts by weight of fly ash, 3 parts by weight of formaldehyde condensate of sodium methyl naphthalene sulfonate, 2 parts by weight of accelerating agent, 5 parts by weight of xanthan gum, 17 parts by weight of heat-insulating glass beads and 40 parts by weight of water into a stirrer at 25 ℃, and stirring at the rotating speed of 150rpm for 10min to obtain cement paste;
k2 placing 3 weight parts of foaming agent, 0.1 weight part of foaming stabilizer and 50 weight parts of water into a hydraulic foaming machine at 25 ℃ for foaming for 10min to obtain foam;
k3 the cement paste, foam were mixed at 25 ℃ and stirred at 80rpm for 5min to give a foamed concrete paste.
The accelerating agent is sodium metaaluminate.
The foaming agent is sodium vinyl sulfonate.
The foaming stabilizer is calcium stearate.
The preparation method of the heat-insulating glass bead comprises the following steps:
l1 mixing bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite according to the mass ratio of 37:24:3:13:0.4:0.3:22:7, crushing and sieving with a 500-mesh sieve to obtain a blank;
l2 putting the blank into a swelling furnace, and carrying out vitrification swelling for 25s at 1310 ℃ to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, a silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water according to the mass ratio of 12:17:2:1.2:10:0.7:0.05:0.7:2.7:0.3:24, and dispersing at 85 ℃ for 70min by ultrasonic waves with the power of 300W and the frequency of 40kHz to obtain modified emulsion;
l4 mixing the glass beads and the modified emulsion according to the mass ratio of 1:10, reacting for 9h at 230 ℃ and under the pressure of 840MPa, filtering, and drying for 5h at 110 ℃ and under the pressure of 50kPa to obtain the heat-preservation glass beads.
The silane coupling agent is a mixture of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane in a mass ratio of 2: 5.
The fluorine-containing acrylate is a mixture of N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate in a mass ratio of 3: 2.
The phthalate is a mixture of diisobutyl phthalate and dibutoxyethyl phthalate in a mass ratio of 8: 5.
Test example 1
Testing the heat preservation performance: the thermal conductivity of the foam concrete slurry obtained in each example of the present invention was measured according to GB/T32064-2015 transient planar heat source test method for thermal conductivity and thermal diffusivity of building materials. Adopting a block sample with the length of 10cm, the width of 10cm and the thickness of 2 cm; the block-shaped sample is obtained by performing conventional pouring on the foam concrete slurry obtained in each embodiment of the invention, the temperature of a pouring environment is 23 ℃, the relative humidity is 50%, the concrete slurry is still adjusted under the condition after being solidified, and the total time from the beginning of pouring to the end of adjustment is 7 days. The test environment temperature was 25 ℃ and the relative humidity was 55%. The number of times of collecting the unbalanced voltage was 150 times. For each example, 5 specimens were tested and the test results averaged. The test results are shown in table 1.
TABLE 1 thermal insulation Properties of the foam concrete mortar
Test example 2
And (3) testing the waterproof performance: the permeation resistance pressure of the foam concrete slurry obtained in each embodiment of the invention is determined according to GB 23440-2009 inorganic waterproof plugging material. The test environment temperature is 20 ℃ and the relative humidity is 50%. The curing conditions are as follows: the temperature was 20 ℃ and the relative humidity was 95%. The conditions for maintaining the pool are as follows: the temperature was 20 ℃. And (3) preparing materials, uniformly stirring, filling the anti-seepage test mold at one time, vibrating on a vibrating table for 20s for forming, scraping off redundant slurry, and trowelling. For each example, 6 specimens were tested and the test results averaged. The test results are shown in table 2.
TABLE 2 waterproof Properties of the foam concrete mortar
| Anti-seepage pressure (MPa) | |
| Example 1 | 1.89 |
| Example 2 | 1.82 |
| Example 3 | 1.80 |
| Example 4 | 1.86 |
| Example 5 | 1.83 |
| Example 6 | 1.34 |
| Example 7 | 1.20 |
| Example 8 | 1.08 |
| Example 9 | 1.83 |
The method comprises the steps of blending bentonite, calcite, fluorite, borocalcite, mirabilite, soda ash, sepiolite and vermiculite, crushing, puffing to obtain tiny glass beads, carrying out surface modification on the tiny glass beads by using modified emulsion prepared by a specific formula under ultrahigh pressure, reducing lattice distortion energy and elastic strain energy between two phase interfaces by improving the coherent relationship between a precipitation phase (the heat-preservation glass beads) and a matrix phase (namely a cement system in the invention), and reducing the internal stress of a formed cement block, so that the unfavorable changes of macroscopic visible cracking, shrinkage and the like during service of the cement block are avoided, and the leakage phenomenon possibly occurring when the cement block meets water is avoided; moreover, the heat-insulating glass beads prepared by the specific method have low thermal conductivity, and the thermal conductivity of the whole system can be reduced by doping the heat-insulating glass beads into a cement matrix, so that the heat-insulating effect is realized. Wherein, bentonite, calcite, fluorite, borocalcite, mirabilite and soda ash are common raw materials for preparing glass, sepiolite and vermiculite are added into the common raw materials for auxiliary sintering, and the glass with uniform quality and smaller heat conductivity coefficient is obtainedBeads. The sepiolite is soft and smooth in texture, has good adsorbability, can adsorb some impurities in the common raw materials, and improves the sintering quality; the vermiculite has a fine air interlayer under the action of roasting expansion, the volume of the vermiculite can be rapidly expanded by 6-20 times, and the specific gravity of the vermiculite after high-temperature roasting expansion is 60-180kg/m3Has strong heat preservation and heat insulation performance. Ion exchange is carried out between myristyl benzyl dimethyl ammonium chloride and the glass beads doped with vermiculite, so that hydrophobic bonds are introduced to the surfaces of the glass beads, and then polyester resin and polyvinyl acetate are grafted to the surfaces of the glass beads through the silane coupling agent, so that the surface capillary tension of the glass beads is modified, and the heat-insulating glass beads are enabled to resist water seepage and leakage through the capillary tension while the compatibility of the heat-insulating glass beads in a cement matrix is enhanced. The polyester resin is a common adhesive in the concrete industry, but the problems of large shrinkage, low adhesive toughness and poor water resistance exist when the polyester resin is used alone, so the polyester resin is combined with triethylene glycol diheptanoate and the fluorine-containing acrylate to solve the problems: the N-ethyl perfluorooctyl sulfamide ethyl acrylate and the perfluoroalkyl ethyl methacrylate have hydrogen bonds between negative electricity centers and strength which are composed of fluorine elements and oxygen elements which are contained in triethylene glycol diheptanoate, and the ultrahigh pressure treatment provides a dynamic driving force required by the reaction, so that the interlacing relation between branched chains and main carbon chains in polyester resin is enhanced, the shrinkage and even cracks caused by subsequent relaxation deformation are reduced, and the heat retention property and the waterproof and anti-permeability of the formed cement blank are improved. The acyloxy contained in the adopted silane coupling agent has good affinity relation with ester bonds in polyvinyl acetate, so that the whole warm-keeping glass bead is in a lower energy state and has good stability and service reliability. The short-chain dicarboxyl structure of oxalic acid and the coconut oil fatty acid diacetyl amide can enhance the fusion degree between hydrophobic raw materials and water in the modified emulsion, and avoid respective accumulation of the raw materials, so that the reaction rate is greatly slowed down. Moreover, the coconut oil fatty acid diacetyl amide also has good foaming and foam stabilizing characteristics, can be used for synergistically enhancing the dispersibility of the bubble cavities in the foam concrete slurry with the foam,the cement has good homogeneity after being formed, and cracking and water seepage or heat insulation failure during service are avoided. According to the invention, the sodium vinylsulfonate and the sodium caseinate are synergistically used as the compound foaming agent to obtain abundant, durable and uniform-size foams, so that the cement has good uniformity after being formed, and cracking and water seepage or heat insulation failure in service are avoided.
Claims (10)
1. The preparation method of the heat-insulating glass bead is characterized by comprising the following steps of:
l1 mixing bentonite, calcite, fluorite, borocalcite, Natrii sulfas, soda ash, sepiolite and vermiculite, pulverizing, and sieving to obtain blank;
l2, putting the blank into a swelling furnace, and carrying out vitrification swelling to obtain glass beads;
l3 mixing polyester resin, polyvinyl acetate, silane coupling agent, oxalic acid, fluorine-containing acrylate, o-phenyl ester, myristyl benzyl dimethyl ammonium chloride, cetyl acid, triethylene glycol diheptanoate, coconut oil fatty acid diethylamide and water, and dispersing by ultrasonic wave to obtain modified emulsion;
and L4, mixing the glass beads and the modified emulsion, reacting, filtering and drying to obtain the heat-preservation glass beads.
2. The method for producing heat-insulating glass beads according to claim 1, wherein: the silane coupling agent is at least one of 3-methacryloxypropylmethyldimethoxysilane and acryloyloxymethyltrimethoxysilane.
3. The method for producing heat-insulating glass beads according to claim 1, wherein: the fluorine-containing acrylate is at least one of N-ethyl perfluorooctyl sulfonamide ethyl acrylate and perfluoroalkyl ethyl methacrylate.
4. The method for producing heat-insulating glass beads according to claim 1, wherein: the phthalate is at least one of diisobutyl phthalate and dibutoxyethyl phthalate.
5. An insulating glass bead is characterized in that: the insulating glass bead according to any one of claims 1 to 4.
6. The preparation method of the foam concrete slurry is characterized by comprising the following steps of:
k1 placing cement, fly ash, formaldehyde condensate of methyl naphthalene sodium sulfonate, accelerating agent, xanthan gum, the heat preservation glass bead as claimed in claim 5 and water into a stirrer, and stirring to obtain cement paste;
k2, putting a foaming agent, a foaming stabilizer and water into a hydraulic foaming machine, and foaming to obtain foam;
k3 mixing and stirring the cement paste and the foam to obtain the foam concrete paste.
7. The method for preparing a foamed concrete paste according to claim 6, wherein: the foaming agent is at least one of sodium vinyl sulfonate and sodium caseinate.
8. The method for preparing a foamed concrete paste according to claim 6, wherein: the accelerating agent is sodium metaaluminate.
9. A foamed concrete paste obtained by the method for producing a foamed concrete paste according to any one of claims 6 to 8.
10. The environment-friendly waterproof heat-preservation construction method is characterized by comprising the following steps of:
j1 treatment of base layer: leveling the protruding part of the building base layer, cleaning dust with a brush, washing with water, and naturally drying;
j2 pouring an insulating layer: delivering the foamed concrete slurry of claim 9 to a construction area with a pipeline pump and casting by gravity flow, and screeding with a screed bar.
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| CN101255039A (en) * | 2008-04-03 | 2008-09-03 | 武汉昂泰科技有限公司 | Polymer micro-sphere insulation heat-proof mortar |
| CN101747675A (en) * | 2010-01-18 | 2010-06-23 | 江西三星气龙新材料股份有限公司 | Tunnel fireproof paint |
| CA2786920A1 (en) * | 2010-02-18 | 2011-08-25 | Lafarge | Foamed concrete |
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| CN101255039A (en) * | 2008-04-03 | 2008-09-03 | 武汉昂泰科技有限公司 | Polymer micro-sphere insulation heat-proof mortar |
| CN101747675A (en) * | 2010-01-18 | 2010-06-23 | 江西三星气龙新材料股份有限公司 | Tunnel fireproof paint |
| CA2786920A1 (en) * | 2010-02-18 | 2011-08-25 | Lafarge | Foamed concrete |
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