CN103145380A - Cement-based shrinkage-free joint filling sealing mortar for doors and windows and preparation method and construction method thereof - Google Patents

Cement-based shrinkage-free joint filling sealing mortar for doors and windows and preparation method and construction method thereof Download PDF

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CN103145380A
CN103145380A CN2013100621799A CN201310062179A CN103145380A CN 103145380 A CN103145380 A CN 103145380A CN 2013100621799 A CN2013100621799 A CN 2013100621799A CN 201310062179 A CN201310062179 A CN 201310062179A CN 103145380 A CN103145380 A CN 103145380A
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cement
slurry
sand slurry
door
agent
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CN103145380B (en
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杨钱荣
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Tongji University
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Tongji University
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Abstract

The invention relates to a cement-based shrinkage-free joint filling sealing mortar for doors and windows and a preparation method and a construction method thereof. The sealing mortar is prepared by the components in parts by weight as follows: 100 parts of cement, 0-80 parts of active admixture, 0.01-10 parts of water reducer, 0.01-10 parts of early strength agent, 0.01-10 parts of thickening time control agent, 0-25 parts of expanding agent, 0-30 parts of binder, 0-10 parts of air entraining agent, 0.01-30 parts of plastic retaining agent, 0.01-10 parts of moisture repellent, 0-5 parts of starch ether, 0-150 parts of powder filler and 0-300 parts of aggregate. Compared with the prior art, the mortar provided by the invention has the advantages of no shrinkage, strong binding power, no falling, good anti-permeability, simpleness in construction, efficiency and the like, and can adequately fill joints of doors and windows to ensure the sealing property around the doors and windows, and water is prevented from being seeped into the doors and windows.

Description

Cement based is without shrinking door and window joint filling seal sand slurry and preparation method thereof and constructional method
Technical field
The invention belongs to material of construction and technical field of building construction, especially relate to a kind of cement based without shrinking door and window joint filling seal sand slurry and preparation method thereof and constructional method.
Background technology
The door and window engineering leakage is as Common Quality Fault In The Construction Project, and be affects one of quality problems that construction work is used, caused the owner to complain, repair rate is higher always.The joint filling sealing material is selected and the quality of quality is one of main reason that affects the door and window construction quality.The most frequently used pointing is sand-cement slurry, glass, rock wool, wool top, silicone adhesive, poly-sulphur sealing material, urethane sealing material etc. in erection of doors and windows.Because the conventional cement mortar cohesive force is poor, deformability is poor, and easily shrinkage cracking, be easy to occur Seepage; Adopt the material seals such as glass, rock wool, wool top, construction process is complicated, there is no cohesive force between materials and sash, and sealing, waterproof effect are relatively poor; The sealing material such as silicone adhesive, thiorubber has cohesive force preferably, constructs also more convenient, but generally only limits to face seal, and not only intensity is lower, ductility is relatively poor, and is not ageing-resistant, easily peels off, and cost is also higher.Polyurethane foam seal gum cementability is good, the joint filling speed of application is very fast, good springiness also, has good Restoration, can be suitable for dynamic seam, but polyurethane sealant also has some shortcomings, the eakiness of filling as wayward in construction quality, whipping agent easily causes and leaks, the water resistance of material own is relatively poor, particularly alkaline-resisting water, resistance toheat are poor, single component glue package stability packed and ectocine larger, usually solidify slowlyer, may produce bubble and crackle under high thermal environment, many occasions need primary coat, the higher application that also affects this kind material of cost.
Therefore, for door and window construction quality present situation, the door and window engineering pointing of developing a kind of excellent property, reasonable price, easy construction is problem in the urgent need to address.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of for the defective that overcomes above-mentioned prior art existence to have good workability, and easy and simple to handle, the cement based of operable time length is without shrinking door and window joint filling seal sand slurry and preparation method thereof and constructional method.
Purpose of the present invention can be achieved through the following technical solutions: a kind of cement based is characterized in that without shrinking door and window joint filling seal sand slurry, and the sealing mortar is formulated by weight by following component:
The component of the preferred following weight part of described seal sand slurry:
Described cement is selected from silicate cement, slag cement, trass cement, pulverized fuel ash cement, one or more in aluminosulfate cement or aluminate cement;
Described active admixture is selected from one or more in flyash, slag powders, silicon ash or colliery powder;
Described water reducer is selected from one or more in sulfonated lignin, beta-methylnaphthalene sulfonate polycondensate, melamino-formaldehyde polycondensate or polycarboxylate dehydragent;
Described hardening accelerator is selected from one or more in sodium sulfate, water glass, Starso, calcium formiate or calcium chloride;
Described adjustable solidification agent is selected from one or more in sodium carbonate, sodium aluminate, citric acid and its esters, tartrate and its esters, Sunmorl N 60S and sodium tetraborate;
Described swelling agent is ettringite or calcium oxide expansion agents;
Described binding agent is pva powder or redispersable latex powder;
Described air entrapment agent is one or more mixtures in the sodium salt compound, soap compounds, sulfonation hydrocarbon polymer, alkyl-phenmethyl Sulfonates compound, triterpenoid saponin tensio-active agent of rosin tree lipid;
Described plasticity-retention agent is selected from one or more in wilkinite, diatomite, methylcellulose gum (HPMC), methyl hydroxyethylcellulose ether (MHPC), methylhydroxypropylcellulose ether (MHPC), hydroxyethyl ether cellulose (HEC), carboxymethyl cellulose (CMC) or lignocellulose (MC);
Described hydrophober is one or both in waterproofing agent of organosilicon powder, stearate;
Described starch ethers is common starch ether or treated starch ether;
Described powder filler is one or more in silica powder, Paris white, grey calcium powder, potter's clay, talcum powder or mica powder;
Described aggregate is grating artificial sand or natural sand, pottery sand, pearlstone, expanded vermiculite, glass bead, polystyrene foam particles, one or more in zeolite, float stone, volcanic cinder and tufa.
Described redispersable latex powder is selected from the multipolymer of ethylene/vinyl acetate, ethene and vinylchlorid and vinyl laurate terpolymer rubber powder, vinyl acetate and ethene and higher fatty acid vinyl acetate terpolymer rubber powder, vinyl acetate and higher fatty acid vinyl acetate copolymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinyl acetate and acrylate and higher fatty acid vinyl acetate terpolymer rubber powder, vinyl acetate homopolymerization rubber powder, one or more in vinylbenzene and butadiene copolymer rubber powder.
A kind of cement based is without the preparation method who shrinks door and window joint filling seal sand slurry, it is characterized in that, take various starting material by formula, add successively aggregate, powder filler, cement, active admixture, water reducer, hardening accelerator, adjustable solidification agent, swelling agent, binding agent, air entrapment agent, plasticity-retention agent, hydrophober, starch ethers in stirrer, stir, obtain the seal sand slurry product.
A kind of cement based is characterized in that without the constructional method of shrinking door and window joint filling seal sand slurry, and the method comprises the following steps:
(1) take as required sealing material, by ratio requirement, add water in the cement based sealing material, adopt handheld stirring machine to stir 3-5 minute, make uniform sealing material slurry.
(2) with in special-purpose caulking gun head insert-seal material, by pull of vacuum, sealing material is sucked in caulking gun, also can directly sealing material be poured in special-purpose caulking machine feed bin stand-by.Described caulking gun is handle type manual compression filling gun, and caulking machine is the special electric screw rod conveyor with feed bin.
(3) plank (the also strip plate of available other material) in door and window seam opposite side placement suitable width as baffle plate, is fixed on sash with clip, prevents that sealing material from flowing out from opposite side.
(4) start electronic caulking machine or manually promote the caulking gun handle, evenly extrude sealing material pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom.
(5) be dismountable baffle plate after the sealing material pointing is completed, and repair with spatula before surface drying.
(6) sealing material also can little scraper pointing, when adopting little doctor-blade application, should first a small amount of sealing material be criticized and scrape in door and window slot both sides, and gradation in seam, and is used doctor blade with the sealing material pointing.Pointing should be full, and hole must not be arranged.
Count when (7) self-watering stirs, constructing operation should be completed in 60 minutes.The joint filling seal construction should in time clean facility after finishing.
Compared with prior art, the invention has the advantages that
(1) this material has good workability, and is easy and simple to handle, and operable time is long.This material adds water and stirs and can use, and can adopt caulking gun injection fillers gap, and construction rapidly and efficiently can increase substantially operating efficiency.。
(2) this material fresh paste has good plasticity, adhesive power and anti-pendant slip, also the phenomenon of trickling can not occur in the vertical direction joint filling, can be filled to fully completely, and to door and window seam depths, fully sealing, guarantees that pointing plays one's part to the full.
(3) this pointing and body of wall and framework bonding force are strong, thereby framework is played fixed action, and the blast that the frame window is born is evenly distributed on the wall of hole.
(4) this material snappiness good, do not shrink, not easy to crack, can make sash and body of wall form an integral body after sealing, ensure the stopping property of door and window body periphery, can prevent the infiltration of moisture.
(5) this material has hydrophobic nature, impervious good, material itself the Seepage that absorbs water can not appear.
(6) contain a large amount of high thermal resistance components in this material, increase the thermal resistance of pointing, can avoid cold-heat bridge occurring at the sash place, have energy-saving effect.
(7) this material take cement as main gelling material, has utilized a large amount of industrial residues as complementary gelling material, has obvious cost advantage compared with macromolecule product.
(8) the sealing material is take inorganic materials as main component, good endurance, do not have problem of aging, also belongs to non-combustible materials simultaneously.
(9) this material does not contain harmful solvent, radioactive substance, and is harmless, free from environmental pollution, belongs to ep-type material.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.
Embodiment 1
preparation method: take various starting material by formula, add successively aggregate (quartz sand in stirrer, pearlstone), cement (Portland blastfurnaceslag cement), active admixture (flyash), water reducer (naphthalene series high-efficiency water-reducing agent), hardening accelerator (anhydrous sodium sulphate), adjustable solidification agent (Sunmorl N 60S), swelling agent (UEA swelling agent), binding agent (vinyl acetate and acrylate and higher fatty acid vinyl acetate terpolymer rubber powder), plasticity-retention agent (lignocellulose), hydrophober (silicone powder), starch ethers, stir, packing forms product.
Constructional method is as follows:
1. take as required sealing material, by ratio requirement, add water in the cement based sealing material, the water yield that adds is 20% of seal sand slurry dry powder weight.Adopt handheld stirring machine to stir 3-5 minute, make uniform seal sand slurry slurry.
2. with in special-purpose caulking gun head insert-seal material, by pull of vacuum, sealing material is sucked in caulking gun, also can directly sealing material be poured in the special electric caulking machine.
3. the batten of placing suitable width at door and window seam opposite side is fixed on sash with clip as baffle plate, prevents that sealing material from flowing out from opposite side.
4. start electronic caulking machine or manually promote the caulking gun handle, evenly extrude sealing material pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom.
5. be dismountable baffle plate after the sealing material pointing is completed, and repair with spatula before surface drying.
Count when 6. self-watering stirs, constructing operation should be completed in 60 minutes.
Said components is by the sealing material that aforementioned technique prepares, and has a time of coagulation moderate, impervious good, snappiness is good, anti-pendant slip is good, heat transfer coefficient is little characteristics, be suitable for general door and window the joint filling construction.
Embodiment 2
preparation method: take various starting material by formula, add successively aggregate (quartz sand in stirrer, pottery sand), cement (P.O 42.5 ordinary Portland cements), active admixture (slag micropowder), water reducer (naphthalene series high-efficiency water-reducing agent), hardening accelerator (calcium formiate), swelling agent (ZY swelling agent), binding agent (polyvinyl alcohol), air entrapment agent (triterpenoid saponin), plasticity-retention agent (methylcellulose gum, wilkinite), hydrophober (silicone powder), treated starch ether, stir, packing forms product.
Constructional method is as follows:
1. take as required sealing material, by ratio requirement, add water in the cement based sealing material, the water yield that adds is 17% of seal sand slurry dry powder weight.Adopt handheld stirring machine to stir 3-5 minute, make uniform seal sand slurry slurry.
2. with in special-purpose caulking gun head insert-seal material, by pull of vacuum, sealing material is sucked in caulking gun, also can directly sealing material be poured in the special electric caulking machine.
3. the batten of placing suitable width at door and window seam opposite side is fixed on sash with clip as baffle plate, prevents that sealing material from flowing out from opposite side.
4. start electronic caulking machine or manually promote the caulking gun handle, evenly extrude sealing material pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom.
5. be dismountable baffle plate after the sealing material pointing is completed, and repair with spatula before surface drying.
Count when 6. self-watering stirs, constructing operation should be completed in 60 minutes.
Said components is by the sealing material that aforementioned technique prepares, and has a time of coagulation very fast, and intensity is higher, and the good characteristics of impervious good, anti-pendant slip are suitable for the seal construction under the larger occasion of door and window seam.
Embodiment 3
preparation method: take various starting material by formula, add successively aggregate (quartz sand) in stirrer, powder filler (talcum powder), cement (P.II52.5 silicate cement), active admixture (slag micropowder, the silicon ash), water reducer (sodium lignosulfonate), hardening accelerator (Starso), swelling agent (UEA swelling agent), binding agent (ethene and vinylchlorid and vinyl laurate terpolymer rubber powder), air entrapment agent (sodium lauryl sulphate), plasticity-retention agent (hydroxyethyl ether cellulose, diatomite), hydrophober (calcium stearate), starch ethers, stir, packing forms product.
Constructional method is as follows:
1. take as required sealing material, by ratio requirement, add water in the cement based sealing material, the water yield that adds is 15% of seal sand slurry dry powder weight.Adopt handheld stirring machine to stir 3-5 minute, make uniform seal sand slurry slurry.
2. with in special-purpose caulking gun head insert-seal material, by pull of vacuum, sealing material is sucked in caulking gun, also can directly sealing material be poured in special electric caulking machine feed bin.
3. the batten of placing suitable width at door and window seam opposite side is fixed on sash with clip as baffle plate, prevents that sealing material from flowing out from opposite side.
4. start electronic caulking machine or manually promote the caulking gun handle, evenly extrude sealing material pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom.
5. be dismountable baffle plate after the sealing material pointing is completed, and repair with spatula before surface drying.
Count when 6. self-watering stirs, constructing operation should be completed in 60 minutes.
Said components is by the sealing material that aforementioned technique prepares, and has a time of coagulation moderate, and intensity is higher, and impervious good, the anti-pendant slip characteristics that have good workability well are suitable for the seal construction of general door and window joint filling.
Embodiment 4
preparation method: take various starting material by formula, add successively aggregate (quartz sand in stirrer, glass bead), powder filler (mica powder), cement (aluminate cement CA-50), active admixture (slag micropowder, the silicon ash), water reducer (melamine water reducing agent), hardening accelerator (sodium sulfate), adjustable solidification agent (tartrate), swelling agent (ZY swelling agent), binding agent (ethene and vinylchlorid and vinyl laurate terpolymer rubber powder), plasticity-retention agent (hydroxyethyl ether cellulose), hydrophober (calcium stearate), starch ethers, stir, packing forms product.
Constructional method is as follows:
1. take as required sealing material, by ratio requirement, add water in the cement based sealing material, the water yield that adds is 15% of seal sand slurry dry powder weight.Adopt handheld stirring machine to stir 3-5 minute, make uniform seal sand slurry slurry.
2. with in special-purpose caulking gun head insert-seal material, by pull of vacuum, sealing material is sucked in caulking gun, also can directly sealing material be poured in the special electric caulking machine.
3. the batten of placing suitable width at door and window seam opposite side is fixed on sash with clip as baffle plate, prevents that sealing material from flowing out from opposite side.
4. start electronic caulking machine or manually promote the caulking gun handle, evenly extrude sealing material pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom.
5. be dismountable baffle plate after the sealing material pointing is completed, and repair with spatula before surface drying.
Count when 6. self-watering stirs, constructing operation should be completed in 40 minutes.
Said components is by the sealing material that aforementioned technique prepares, and has a time of coagulation short, and early strength is high, and the characteristics that plasticity is good, anti-pendant slip is good, heat transfer coefficient is little are suitable for the construction of the joint filling of door and window in winter.
Embodiment 5
A kind of cement based is without shrinking door and window joint filling seal sand slurry, and the sealing mortar is formulated by weight by following component:
Preparation method: take various starting material by formula, add successively aggregate, powder filler, cement, active admixture, water reducer, hardening accelerator, adjustable solidification agent, swelling agent, binding agent, air entrapment agent, plasticity-retention agent, hydrophober, starch ethers in stirrer, stir, packing forms product.
Constructional method:
1. take as required sealing material, by ratio requirement, add water in seal sand slurry, the water yield that adds is 18% of seal sand slurry dry powder weight, adopts handheld stirring machine to stir 3-5 minute, makes uniform seal sand slurry slurry;
2. with in special-purpose caulking gun head insert-seal material, by pull of vacuum, sealing material is sucked in caulking gun, also can directly sealing material be poured in the special electric caulking machine.
3. the batten of placing suitable width at door and window seam opposite side is fixed on sash with clip as baffle plate, prevents that sealing material from flowing out from opposite side.
4. start electronic caulking machine or manually promote the caulking gun handle, evenly extrude sealing material pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom.
5. be dismountable baffle plate after the sealing material pointing is completed, and repair with spatula before surface drying.
Count when 6. self-watering stirs, constructing operation should be completed in 60 minutes.
Embodiment 6
A kind of cement based is without shrinking door and window joint filling seal sand slurry, and the sealing mortar is formulated by weight by following component:
Preparation method: take various starting material by formula, add successively aggregate, powder filler, cement, active admixture, water reducer, hardening accelerator, adjustable solidification agent, swelling agent, binding agent, air entrapment agent, plasticity-retention agent, hydrophober, starch ethers in stirrer, stir, packing forms product.
Constructional method:
(1) take as required sealing material, by ratio requirement, add water in seal sand slurry, the water yield that adds is 20% of seal sand slurry dry powder weight, adopts handheld stirring machine to stir 3-5 minute, makes uniform seal sand slurry slurry;
2. with in special-purpose caulking gun head insert-seal material, by pull of vacuum, sealing material is sucked in caulking gun, also can directly sealing material be poured in the special electric caulking machine.
3. the batten of placing suitable width at door and window seam opposite side is fixed on sash with clip as baffle plate, prevents that sealing material from flowing out from opposite side.
4. start electronic caulking machine or manually promote the caulking gun handle, evenly extrude sealing material pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom.
5. be dismountable baffle plate after the sealing material pointing is completed, and repair with spatula before surface drying.
Count when 7. self-watering stirs, constructing operation should be completed in 60 minutes.

Claims (9)

1. a cement based without shrinking door and window joint filling seal sand slurry, is characterized in that, the sealing mortar is formulated by weight by following component:
2. a kind of cement based according to claim 1 without shrinking door and window joint filling seal sand slurry, is characterized in that, the component of the preferred following weight part of described seal sand slurry:
3. a kind of cement based according to claim 1 and 2 is without shrinking door and window joint filling seal sand slurry, it is characterized in that, described cement is selected from silicate cement, slag cement, trass cement, pulverized fuel ash cement, one or more in aluminosulfate cement or aluminate cement;
Described active admixture is selected from one or more in flyash, slag powders, silicon ash or colliery powder;
Described water reducer is selected from one or more in sulfonated lignin, beta-methylnaphthalene sulfonate polycondensate, melamino-formaldehyde polycondensate or polycarboxylate dehydragent;
Described hardening accelerator is selected from one or more in sodium sulfate, water glass, Starso, calcium formiate or calcium chloride;
Described adjustable solidification agent is selected from one or more in sodium carbonate, sodium aluminate, citric acid and its esters, tartrate and its esters, Sunmorl N 60S and sodium tetraborate;
Described swelling agent is ettringite or calcium oxide expansion agents;
Described binding agent is pva powder or redispersable latex powder;
Described air entrapment agent is one or more mixtures in the sodium salt compound, soap compounds, sulfonation hydrocarbon polymer, alkyl-phenmethyl Sulfonates compound, triterpenoid saponin tensio-active agent of rosin tree lipid;
Described plasticity-retention agent is selected from one or more in wilkinite, diatomite, methylcellulose gum (HPMC), methyl hydroxyethylcellulose ether (MHPC), methylhydroxypropylcellulose ether (MHPC), hydroxyethyl ether cellulose (HEC), carboxymethyl cellulose (CMC) or lignocellulose (MC);
Described hydrophober is one or both in waterproofing agent of organosilicon powder, stearate;
Described starch ethers is common starch ether or treated starch ether;
Described powder filler is one or more in silica powder, Paris white, grey calcium powder, potter's clay, talcum powder or mica powder;
Described aggregate is grating artificial sand or natural sand, pottery sand, pearlstone, expanded vermiculite, glass bead, polystyrene foam particles, one or more in zeolite, float stone, volcanic cinder and tufa.
4. a kind of cement based according to claim 3 is without shrinking door and window joint filling seal sand slurry, it is characterized in that, described redispersable latex powder is selected from the multipolymer of ethylene/vinyl acetate, ethene and vinylchlorid and vinyl laurate terpolymer rubber powder, vinyl acetate and ethene and higher fatty acid vinyl acetate terpolymer rubber powder, vinyl acetate and higher fatty acid vinyl acetate copolymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinyl acetate and acrylate and higher fatty acid vinyl acetate terpolymer rubber powder, vinyl acetate homopolymerization rubber powder, one or more in vinylbenzene and butadiene copolymer rubber powder.
In one kind according to claim 1~4 arbitrary described a kind of cement based without the preparation method who shrinks door and window joint filling seal sand slurry, it is characterized in that, take various starting material by formula, add successively aggregate, powder filler, cement, active admixture, water reducer, hardening accelerator, adjustable solidification agent, swelling agent, binding agent, air entrapment agent, plasticity-retention agent, hydrophober, starch ethers in stirrer, stir, obtain the seal sand slurry product.
6. arbitrary described a kind of cement based without the constructional method of shrinking door and window joint filling seal sand slurry, is characterized in that in one kind according to claim 1~5, and the method comprises the following steps:
(1) take as required sealing material, by ratio requirement, add by weight water in seal sand slurry, adopt handheld stirring machine to stir 3-5 minute, make uniform seal sand slurry slurry;
(2) seal sand slurry slurry pointing is entered the door and window seam;
Count when (3) self-watering stirs, constructing operation was completed in 60 minutes.
7. a kind of cement based according to claim 6 is without the constructional method of shrinking door and window joint filling seal sand slurry, it is characterized in that, step (2) is described to be entered door and window sewer body with seal sand slurry slurry pointing and comprises the following steps: in caulking gun head insert-seal mortar slurry, by pull of vacuum, the seal sand slurry slurry is sucked in caulking gun, or directly the seal sand slurry slurry is poured in electronic caulking machine feed bin, then evenly extrude seal sand slurry slurry pointing door and window seam in the pressure mode, and be full of gradually whole seam by the bottom, after seal sand slurry slurry pointing, repair with little scraper before surface drying.
Described caulking gun is handle type manual compression filling gun, and caulking machine is the special electric screw rod conveyor with feed bin.
8. a kind of cement based according to claim 6 is without the constructional method of shrinking door and window joint filling seal sand slurry, it is characterized in that, step (2) is described to be entered door and window sewer body with seal sand slurry slurry pointing and comprises the following steps: adopt little doctor-blade application, first a small amount of seal sand slurry slurry is criticized and scraped in door and window slot both sides, gradation in seam, and is used little doctor blade with seal sand slurry slurry pointing.
9. a kind of cement based according to claim 6 without the constructional method of shrinking door and window joint filling seal sand slurry, is characterized in that, the seal sand slurry that described constructional method adopts can be also commercially available cement-based mortar.
CN201310062179.9A 2013-02-27 2013-02-27 Cement-based shrinkage-free joint filling sealing mortar for doors and windows and preparation method and construction method thereof Active CN103145380B (en)

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CN110467408A (en) * 2019-09-25 2019-11-19 华新水泥股份有限公司 A kind of compound door and window joint filling mortar and its application method
CN111302696A (en) * 2020-03-03 2020-06-19 深圳市三绿科技有限公司 Regulator for recycled aggregate mortar and preparation method thereof
CN112266223A (en) * 2020-10-27 2021-01-26 贵州昊华中意环保设备有限公司 Butt joint construction method for glass fiber reinforced plastic sand inclusion pipes
CN113045258A (en) * 2021-05-31 2021-06-29 山东盛都节能科技有限公司 Heat-insulating building block and preparation method thereof

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CN113045258A (en) * 2021-05-31 2021-06-29 山东盛都节能科技有限公司 Heat-insulating building block and preparation method thereof

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