CN101851958B - Insulation system with polycrystalline insulation mortar - Google Patents

Insulation system with polycrystalline insulation mortar Download PDF

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CN101851958B
CN101851958B CN2010101677849A CN201010167784A CN101851958B CN 101851958 B CN101851958 B CN 101851958B CN 2010101677849 A CN2010101677849 A CN 2010101677849A CN 201010167784 A CN201010167784 A CN 201010167784A CN 101851958 B CN101851958 B CN 101851958B
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mortar
insulation
inorganic
waterproofing
polycrystalline
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CN101851958A (en
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陈岳朝
何耀光
陈锡桥
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Haida Construction Group Co., Ltd.
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陈岳朝
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/24Structural elements or technologies for improving thermal insulation
    • Y02A30/244Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires

Abstract

The invention discloses an insulation system with polycrystalline insulation mortar, which belongs to the technical field of the building material. The insulation system comprises interface mortar, insulation mortar and waterproofing mortar, wherein the insulation mortar comprises the following components: cement, redispersable latex powder, cold water type polyvinyl alcohol, hydroxypropyl-methyl cellulose ether, air entraining agents, sodium silicate, inorganic retarder and polystyrene particles. Compared with the prior art, the invention has the following advantages of: 1, solving the problem that the bonding strength of the inorganic cementitious material for penetration is not sufficient, and significantly improving the bonding strength and the compressive strength of the whole insulation system; 2, improving the construction property of the material and the insulation effect of the system; 3, improving the construction property and enhancing the long-term strength of the product; 4, improving the waterproofing function of the system, and changing the rigidity of various kinds of polycrystalline mortar into softness, thereby improving the impact resistance, bending resistance, tensile strength, shrinkage resistance and other strain capacities of the insulation system; and 5. improving the bending resistance and the tensile strength of the material and the physical anti-cracking performance of the system.

Description

A kind of heat-insulation system with polycrystalline insulation mortar
Technical field
The invention belongs to building material technical field, a kind of heat-insulation system with polycrystalline insulation mortar specifically, it is mainly used in the inside and outside energy-saving heat preserving of architectural exterior-protecting construction body of wall or roof system.
Background technology
General sheet material or the member heat preserving and insulating material of adopting of home and abroad construction wall insulation at present, price is high, construction difficulty is large, impact resistance is poor, but high insulating effect, the area seasons oneself to cold; Also there is at present another kind of heat insulating material, i.e. glue powder polyphenyl granule exterior wall external insulation system, this heat insulation system is comprised of boundary layer, thermal insulation separation thermosphere, anti-cracking protective layer, plays thermal insulation, protection.all there is cement in each layer of glue powder polyphenyl granule exterior wall external insulation system of the prior art, but because cement is hydraulic material, form Behavior of Hardened Cement Paste with hydrate, generally needed 28 days just can reach design strength, dehydration too early, aquation stops, intensity namely no longer rises, the cement material is the plastic material of blunging, volume shrinks along with the evaporation of moisture, in contraction process, if the cement material does not also have intensity or intensity very low, shrinkage stress is greater than the tension stress of material, amount of contraction will show as the large fracture of relatively concentrating, and exist because variations in temperature causes expanding, shrink and produce the problem in crack, secondly the glue powder polyphenyl granule exterior wall external insulation system of prior art impervious, waterproof ability is relatively poor, if and impervious, water resistance is poor, drenched by sleet or easily make moist in moist air environment, such as the high area of air humidity such as in China East China, thereby form steam in the space of thermal insulation separation thermosphere, heat energy will conduct by steam, weakens the heat preservation and energy conservation effects of thermal insulation separation thermosphere, in addition, existing glue powder polyphenyl granule exterior wall external insulation system has the characteristics of rigidity, thereby easily causes the brittle fractures such as impact, expansion or contraction because of thermal stresses or the generation of other external force, again, it is low that existing glue powder polyphenyl granule exterior wall external insulation system has adhesion strength, shock resistance, the shortcoming that compressive strength is low, and at the Xia Redong cryogenic region due to altitude temperature difference effect, the phenomenon such as easily produce local hollowing at boundary layer, come off.
Summary of the invention
The present invention is directed to deficiency of the prior art, a kind of flexibility is provided, the waterproof and antiseepage performance is good, adhesion strength is high, not easy to crack, and the heat-insulation system with polycrystalline insulation mortar of easy construction is applicable to the construction wall insulation of Xia Redong cryogenic region.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
A kind of heat-insulation system with polycrystalline insulation mortar, comprise boundary mortar, thermal insulation mortar and waterproofing mortar, it is characterized in that: above-mentioned thermal insulation mortar comprises following component: cement, redispersable latex powder, cold water type polyvinyl alcohol, hydroxypropyl methyl cellulose ether, air entraining agent, water glass, inorganic retarder and granular polystyrene.Redispersable latex powder in the present invention and cold water type polyvinyl alcohol are a kind of flexible high molecular materials, as the organic gel gel material, it can be dissolved in cold water in mortar stirs in, particularly fully dissolved at the aqueous solution that contains alkalescence, forming rapidly membrane structure is wrapped in around cement and other inorganic coagulation materials, make between organic gel gel material and inorganic coagulation material and mutually merge, and fully bond after solidifying; Secondly, the inorganic coagulation materials such as cement all become with graininess in hydrolysis or hydration reaction, be difficult to be penetrated into the object of denser, and become in the space between particle and particle, the bonding effect specific area that has after cementitious material is solidified and between bonded material is restricted, but as the redispersable latex powder of organic gel gel material and the hydrolysate of cold water type polyvinyl alcohol, the film that forms after hydrolysis contacts with bonded material comprehensively, make up the deficiency of inorganic coagulation material, the adhesion strength of material improves greatly; Again, the film that forms after redispersable latex powder and waterproofing agent of organosilicon hydrolysis is wrapped in around inorganic coagulation material, it is forming the plasticity ligament between the inorganic gel particle after material cured, can increase the pliability of mortar, improve the strain capacity such as shock resistance of the present invention, anti-folding, stretch-proof, contraction, hinder the brittle fractures such as impact, expansion or contraction that thermal stresses or other external force produce; Further, the film that forms after redispersable latex powder and cold water type polyvinyl alcohol hydrolysis, it is when material cured, around the internal package of the product of moulding inorganic coagulation material, externally cover the surface of shaped article, have very strong impervious, waterproof ability, can prevent freeze-thaw damage and the system reduction heat preservation and energy conservation effects of making moist.The water glass that adds in the present invention is to form tiny chemical molecular hydrate after the inorganic coagulation material hydrolysis, it enriches between silicate granules with the crystalline solid form in the hydrated reaction of cement process, the specific area of inorganic coagulation material is increased greatly, thereby realized in the situation that the relative adhesion strength of the dry density of material significantly improves.The hydroxypropyl methyl cellulose ether that adds in the present invention is the multichain high molecular polymer of a kind of high-hydroscopicity, high-moisture-retention, it rises rapidly in 2-3 minute in mortar stirs and sticks with paste the film that forms high slumpability, laminated segregation, the bleeding that can effectively stop mortar, the workability of the various slurries of improvement; Also can make mortar fully keep moisture content, allow the abundant aquation of cement also effectively obtain maintenance, the intensity after the moulding of raising mortar; After hydroxypropyl methyl cellulose ether plays paste, make a large amount of introducing microbubble in mortar.Like this, shrink because the freeze thawing circulation causes mortar expansion the free water that destroys, can enter in these microbubbles, thereby reduce early stage freeze-thaw damage; In addition, the expansion, the shrinkage stress that produce because of variations in temperature are effectively cushioned to the microbubble diffusion, thereby reduce the generation in crack; Air entraining agent is the organic active active material, can improve system's heat insulation effect, and plays the effect that improves the material workability.
Preferably, by weight percentage, the content of each component of thermal insulation mortar is: cement 60%-80%, redispersable latex powder 0.2%-0.3%, cold water type polyvinyl alcohol 0.5%-1.0%, hydroxypropyl methyl cellulose ether 0.1%-0.2%, air entraining agent 0.01%-0.03%, water glass 0.06%-0.1%, inorganic retarder 0.002%-0.01% and granular polystyrene 7%-12%.
In order to obtain better technique effect, further technical measures also comprise:
Above-mentioned thermal insulation mortar also comprises slag powders, coarse whiting, fine particle calcium carbonate and flyash, and by weight percentage, proportion is respectively in thermal insulation mortar: slag powders 3%-10%, coarse whiting 3%-5%, fine particle calcium carbonate 1%-4%, flyash 3%-12%.At first, the use of slag powders, coarse whiting, fine particle calcium carbonate and flyash greatly reduces manufacturing cost of the present invention, and slag powders, flyash, coarse whiting are the inorganic active active material, can play the hydration reaction that promotes cement, water glass, fine particle calcium carbonate, and improve the material workability.
Further improve: described thermal insulation mortar also comprises wood fibre and polypropylene fibre, and by weight percentage, proportion is respectively in thermal insulation mortar: wood fibre 1%-3%, polypropylene fibre 0.5%-2%.Polypropylene fibre can form uniform unrest to support system in mortar inside, improve the physical properties such as tensile strength of the present invention and impact strength, thereby can effectively stop the crack that produces because of the reasons such as plastic shrinkage, drying shrinkage or mortar segregation, bleeding that produce in the inherent process of setting of mortar and the development in crack; Also can effectively hinder simultaneously the outside crack that produces of expanding, shrink as variations in temperature, the crack that the crack that building settlement produces and shock and vibration produce; Wood fibre also plays water retention simultaneously, improves the intensity in thermal insulation mortar later stage.
Preferably, by weight percentage, described waterproofing mortar comprises following component: cement 25-36%, sand 55%-65%, redispersable latex powder 0.5%-2%, hydroxypropyl methyl cellulose ether 0.1%-0.2%, inorganic water reducing agent 0.1%-0.3%, waterproofing agent of organosilicon 0.15%-0.4%, water glass 0.3%-0.7%, inorganic retarder 0.01%-0.04%.Waterproofing agent of organosilicon in waterproofing mortar is the organic waterproof material.
Further improve: above-mentioned waterproofing mortar also comprises slag powders, coarse whiting, fine particle calcium carbonate and flyash, by weight percentage, proportion is respectively in waterproofing mortar: slag powders 2%-5%, coarse whiting 3%-5%, fine particle calcium carbonate 0.5%-2.0%, flyash 2%-3%.
Further improve: waterproofing mortar also comprises polypropylene fibre, and by weight percentage, proportion is 0.04%-0.06% in waterproofing mortar.Polypropylene fibre can form uniform unrest to support system in mortar inside, improve the physical properties such as tensile strength of the present invention and impact strength, thereby can effectively stop the crack that produces because of the reasons such as plastic shrinkage, drying shrinkage or mortar segregation, bleeding that produce in the inherent process of setting of mortar and the development in crack; Also can effectively hinder simultaneously the outside crack that produces of expanding, shrink as variations in temperature, the crack that the crack that building settlement produces and shock and vibration produce.
Preferably, by weight percentage, boundary mortar comprises following component: cement 25%-38%, sand 55%-70%, redispersable latex powder 0.5%-2%, hydroxypropyl methyl cellulose ether 0.1%-0.2%, inorganic water reducing agent 0.1%-0.3%, water glass 0.3%-0.6% and inorganic retarder 0.01%-0.05%.Boundary mortar has improved adhesion strength between itself and base course wall greatly by redispersable latex powder, has avoided that boundary layer easily produces local hollowing, the problem of the phenomenon such as come off.
Further improve: above-mentioned boundary mortar also comprises slag powders, and by weight percentage, proportion is 3%-5% in boundary mortar.
The present invention compared with prior art has following beneficial effect:
1, take cement, water glass, fine particle calcium carbonate as inorganic coagulation material; , strengthen the inorganic coagulation material infiltration and bond hypodynamic defective as the organic gel gel material with redispersable latex powder and cold water type polyvinyl alcohol; Bonding, the compressive strength of whole heat-insulation system are significantly improved.
2, take slag powders, flyash, coarse whiting as the inorganic active active material, promote the hydration reaction of cement, water glass, fine particle calcium carbonate, and improve the material workability; Also take full advantage of industrial residue, take air entraining agent as the organic active active material, improve system's heat insulation effect, and improve the material workability.
3, with the high-hydroscopicities such as hydroxypropyl methyl cellulose ether, wood fibre, high-moisture-retention material, improve workability, strengthen the product later strength.
4, take redispersable latex powder and cold water type polyvinyl alcohol, waterproofing agent of organosilicon as the organic waterproof material; The water-proof function of system is improved; And make various polycrystal mortar rigidity become flexibility, improve the strain capacity such as the shock resistance of heat-insulation system, anti-folding, stretch-proof, contraction.
5, add polypropylene fibre, wood fibre to improve the physics cracking resistance that the anti-folding of material, stretch-proof ability improve system.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is described in further detail:
Embodiment 1
A kind of heat-insulation system with polycrystalline insulation mortar comprises boundary mortar, thermal insulation mortar and waterproofing mortar, wherein,
Thermal insulation mortar comprises cement, redispersable latex powder, cold water type polyvinyl alcohol, hydroxypropyl methyl cellulose ether, air entraining agent, water glass, inorganic retarder, granular polystyrene, slag powders, coarse whiting, fine particle calcium carbonate, flyash, wood fibre and polypropylene fibre.By weight percentage, the content of each component of thermal insulation mortar is: cement 60%, redispersable latex powder 0.3%, cold water type polyvinyl alcohol 0.7%, hydroxypropyl methyl cellulose ether 0.2%, air entraining agent 0.03%, water glass 0.06%, inorganic retarder 0.01%, granular polystyrene 10%, slag powders 10%, coarse whiting 5%, fine particle calcium carbonate 4%, flyash 4.7%, wood fibre 3% and polypropylene fibre 2%;
Waterproofing mortar comprises cement, sand, redispersable latex powder, hydroxypropyl methyl cellulose ether, inorganic water reducing agent, waterproofing agent of organosilicon, water glass, inorganic retarder, polypropylene fibre, slag powders, coarse whiting, fine particle calcium carbonate and flyash.By weight percentage, the content of each component of waterproofing mortar is: cement 25%, sand 65%, redispersable latex powder 0.5%, hydroxypropyl methyl cellulose ether 0.1%, inorganic water reducing agent 0.1%, waterproofing agent of organosilicon 0.25%, water glass 0.5%, inorganic retarder 0.01%, polypropylene fibre 0.04%, slag powders 3%, coarse whiting 3%, fine particle calcium carbonate 0.5%, flyash 2%;
By weight percentage, boundary mortar comprises following component: cement 25%, sand 70%, redispersable latex powder 1.49%, hydroxypropyl methyl cellulose ether 0.1%, inorganic water reducing agent 0.1%, water glass 0.3%, inorganic retarder 0.01% and slag powders 3%.
Embodiment 2
A kind of heat-insulation system with polycrystalline insulation mortar comprises boundary mortar, thermal insulation mortar and waterproofing mortar, wherein,
Thermal insulation mortar comprises cement, redispersable latex powder, cold water type polyvinyl alcohol, hydroxypropyl methyl cellulose ether, air entraining agent, water glass, inorganic retarder, granular polystyrene, slag powders, coarse whiting, fine particle calcium carbonate, flyash, wood fibre and polypropylene fibre.By weight percentage, the content of each component of thermal insulation mortar is: cement 80%, redispersable latex powder 0.3%, cold water type polyvinyl alcohol 1.0%, hydroxypropyl methyl cellulose ether 0.1%, air entraining agent 0.03%, water glass 0.06%, inorganic retarder 0.01%, granular polystyrene 7%, slag powders 3%, coarse whiting 3%, fine particle calcium carbonate 1%, flyash 3%, wood fibre 1% and polypropylene fibre 0.5%.
Waterproofing mortar comprises cement, sand, redispersable latex powder, hydroxypropyl methyl cellulose ether, inorganic water reducing agent, waterproofing agent of organosilicon, water glass, inorganic retarder, polypropylene fibre, slag powders, coarse whiting, fine particle calcium carbonate and flyash.By weight percentage, the content of each component of waterproofing mortar is: cement 36%, sand 55%, redispersable latex powder 0.5%, hydroxypropyl methyl cellulose ether 0.1%, inorganic water reducing agent 0.1%, waterproofing agent of organosilicon 0.25%, water glass 0.5%, inorganic retarder 0.01%, polypropylene fibre 0.04%, slag powders 2%, coarse whiting 3%, fine particle calcium carbonate 0.5%, flyash 2%.
By weight percentage, boundary mortar comprises following component: cement 38%, sand 55%, redispersable latex powder 2%, hydroxypropyl methyl cellulose ether 0.2%, inorganic water reducing agent 0.3%, water glass 0.6%, inorganic retarder 0.05% and slag powders 3.85%.
Embodiment 3
A kind of heat-insulation system with polycrystalline insulation mortar comprises boundary mortar, thermal insulation mortar and waterproofing mortar, wherein,
Thermal insulation mortar comprises cement, redispersable latex powder, cold water type polyvinyl alcohol, hydroxypropyl methyl cellulose ether, air entraining agent, water glass, inorganic retarder, granular polystyrene, slag powders, coarse whiting, fine particle calcium carbonate, flyash, wood fibre and polypropylene fibre.By weight percentage, the content of each component of thermal insulation mortar is: cement 60%, redispersable latex powder 0.2%, cold water type polyvinyl alcohol 0.5%, hydroxypropyl methyl cellulose ether 0.15%, air entraining agent 0.01%, water glass 0.1%, inorganic retarder 0.002%, granular polystyrene 12%, slag powders 3%, coarse whiting 5%, fine particle calcium carbonate 4%, flyash 10.038%, wood fibre 3% and polypropylene fibre 2%.
Waterproofing mortar comprises cement, sand, redispersable latex powder, hydroxypropyl methyl cellulose ether, inorganic water reducing agent, waterproofing agent of organosilicon, water glass, inorganic retarder, polypropylene fibre, slag powders, coarse whiting, fine particle calcium carbonate and flyash.By weight percentage, the content of each component of waterproofing mortar is: cement 25%, sand 56.3%, redispersable latex powder 2%, hydroxypropyl methyl cellulose ether 0.2%, inorganic water reducing agent 0.3%, waterproofing agent of organosilicon 0.4%, water glass 0.7%, inorganic retarder 0.04%, polypropylene fibre 0.06%, slag powders 5%, coarse whiting 5%, fine particle calcium carbonate 2.0%, flyash 3%.
By weight percentage, boundary mortar comprises following component: cement 32%, sand 61.62%, redispersable latex powder 0.5%, hydroxypropyl methyl cellulose ether 0.15%, inorganic water reducing agent 0.2%, water glass 0.5%, inorganic retarder 0.03% and slag powders 5%.
Comprehensive above-described embodiment, the technical indicator contrast of the glue powder polyphenyl granule exterior wall external insulation system of the present invention and prior art is as follows:
1, boundary material is pressed and is cut adhesion strength relatively
Do not add water glass, hydroxypropyl methyl cellulose ether
Project ??7d ??15d ??28d
Former intensity ??≥0.2MPa ??≥0.4MPa ??≥0.7MPa
Water-fast intensity ??≥0.1MPa ??≥0.3MPa ??≥0.5MPa
Freeze-thawing resistant intensity ??≥0.1MPa ??≥0.2MPa ??≥0.5MPa
Add water glass, hydroxypropyl methyl cellulose ether
Project ??7d ??15d ??28d
Former intensity ??≥0.1MPa ??≥0.4MPa ??≥1.0MPa
Water-fast intensity ??≥0.08MPa ??≥0.4MPa ??≥0.7MPa
Freeze-thawing resistant intensity ??≥0.08MPa ??≥0.3MPa ??≥0.5MPa
2, the armour layer property indices relatively
Do not add water glass, waterproofing agent of organosilicon, redispersable latex powder
Add water glass, waterproofing agent of organosilicon, redispersable latex powder
3, some performance indications of thermal insulation mortar relatively
Do not add water glass, hydroxypropyl methyl cellulose ether
Project ??15d ??28d ??48d
Compressive strength ??≥100Kpa ??≥150Kpa ??≥200Kpa
Pressure is cut adhesion strength ??≥20Kpa ??≥40Kpa ??≥50Kpa
Add water glass, hydroxypropyl methyl cellulose ether
Project ??15d ??28d ??48d
Compressive strength ??≥80Kpa ??≥200Kpa ??≥250Kpa
Pressure is cut adhesion strength ??≥15Kpa ??≥40Kpa ??≥70Kpa
4, some performance indications of whole system relatively
Do not add water glass, waterproofing agent of organosilicon, redispersable latex powder
Add water glass, waterproofing agent of organosilicon, redispersable latex powder

Claims (6)

1. heat-insulation system with polycrystalline insulation mortar, comprise boundary mortar, thermal insulation mortar and waterproofing mortar, it is characterized in that: described thermal insulation mortar comprises following component: cement, redispersable latex powder, cold water type polyvinyl alcohol, hydroxypropyl methyl cellulose ether, air entraining agent, water glass, inorganic retarder and granular polystyrene; By weight percentage, the content of each component of described thermal insulation mortar is: cement 60%-80%, redispersable latex powder 0.2%-0.3%, cold water type polyvinyl alcohol 0.5%-1.0%, hydroxypropyl methyl cellulose ether 0.1%-0.2%, air entraining agent 0.01%-0.03%, water glass 0.06%-0.1%, inorganic retarder 0.002%-0.01% and granular polystyrene 7%-12%.
2. a kind of heat-insulation system with polycrystalline insulation mortar according to claim 1, it is characterized in that: described thermal insulation mortar also comprises slag powders, coarse whiting, fine particle calcium carbonate and flyash, by weight percentage, proportion is respectively in thermal insulation mortar: slag powders 3%-10%, coarse whiting 3%-5%, fine particle calcium carbonate 1%-4%, flyash 3%-12%.
3. a kind of heat-insulation system with polycrystalline insulation mortar according to claim 2, it is characterized in that: described thermal insulation mortar also comprises wood fibre and polypropylene fibre, by weight percentage, proportion is respectively in thermal insulation mortar: wood fibre 1%-3%, polypropylene fibre 0.5%-2%.
4. the described a kind of heat-insulation system with polycrystalline insulation mortar of arbitrary claim according to claim 1 to 3, it is characterized in that: by weight percentage, described waterproofing mortar comprises following component: cement 25-36%, sand 55%-65%, redispersable latex powder 0.5%-2%, hydroxypropyl methyl cellulose ether 0.1%-0.2%, inorganic water reducing agent 0.1%-0.3%, waterproofing agent of organosilicon 0.15%-0.4%, water glass 0.3%-0.7%, inorganic retarder 0.01%-0.04%.
5. a kind of heat-insulation system with polycrystalline insulation mortar according to claim 4, it is characterized in that: described waterproofing mortar also comprises slag powders, coarse whiting, fine particle calcium carbonate and flyash, by weight percentage, proportion is respectively in waterproofing mortar: slag powders 2%-5%, coarse whiting 3%-5%, fine particle calcium carbonate 0.5%-2.0%, flyash 2%-3%.
6. the described a kind of heat-insulation system with polycrystalline insulation mortar of arbitrary claim according to claim 1 to 3, it is characterized in that: by weight percentage, described boundary mortar comprises following component: cement 25%-38%, sand 55%-70%, redispersable latex powder 0.5%-2%, hydroxypropyl methyl cellulose ether 0.1%-0.2%, inorganic water reducing agent 0.1%-0.3%, water glass 0.3%-0.6% and inorganic retarder 0.01%-0.05%.
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