CN101244915A - Ultra-plasticizing gravity flow flat crack resistant mortar - Google Patents
Ultra-plasticizing gravity flow flat crack resistant mortar Download PDFInfo
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Abstract
The invention relates to a superplasticizer self-leveling anti-cracking mortar which is characterized by being formed by cement, fine sand, inert flour filler, adjustable solidification agent, micro-expanding agent, super plasticizer, water-retaining admixture, anti-cracking fiber, stabilizer and water; wherein, the weight percentage of water accounts for 20 percent to 25 percent of the total weight; the weight percentage of the components are as follows: 25 percent to 35 percent of cement, 35 percent to 45 percent of fine sand, 10 percent to 20 percent of inert flour filler, 8 percent to 12 percent of adjustable solidification agent, 2 percent to 4 percent of micro-expanding agent, 1.6 percent to 2.8 percent of super plasticizer, 0.04 percent to 0.1 percent of water-retaining admixture, 0.05 percent to 0.1 percent of anti-cracking fiber, and 0.1 percent to 0.25 percent of stabilizer. The superplasticizer self-leveling anti-cracking mortar has the advantages of good self-leveling mortar fluidity, excellent self-leveling ability, fast solidification and drying, low shrinking rate, high wear resistance, low flexibility and anti-cracking property of anti-cracking mortar, good impact resistance, high bond strength, and good waterproof and climate resistance, which can be applied in self-leveling material field and anti-cracking mortar field.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of ultra-plasticizing gravity flow flat crack resistant mortar.
Background technology
The development of self-leveling material starts from Northern European countries, and late 1970s is developed rapidly in Sweden.By the difference of main base material, self-leveling material is divided into inorganic system and 2 big classes of organic system, and inorganic is that self-leveling material mainly refers to gypsum base and cement-based self-leveling material, the main finger ring oxygen of organic system self-leveling material self-leveling material.Domestic research about gravity flowing levelling mortar is started late, gravity flowing levelling mortar mainly limits the use of in injection material and floor material at present, to its requirement be must have extraordinary flowability, from the levelling ability with from smooth ability, in addition, it should have rapid solidification and exsiccant performance, can combine and have low-shrinkage, high compressive strength and good wear resistance with various base materials.
In recent years, along with going deep into of work applied in the innovation and the energy saving building of national materials for wall, external wall heat insulation system reaches its maturity, and the performance of the flexible plastering mortar of cracking resistance that is applied to site operation is also constantly perfect.On the research basis in early stage, the prefabricated thermal insulation decoration integrated board grows up gradually.Moulding process based on precoated plate requires and performance requriements, and to having the self-leveling material performance, the demand that has the novel dry-mix of anticracking grout performance again also is suggested.
Summary of the invention
The objective of the invention is to propose a kind of good fluidity, solidify and fast drying, low-shrinkage, splitting resistance is good, cohesive strength is high ultra-plasticizing gravity flow flat crack resistant mortar.
To achieve these goals, technical scheme of the present invention is: a kind of ultra-plasticizing gravity flow flat crack resistant mortar, it is characterized in that being that it is mixed by cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water, cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and the shared mass percent of stablizer are 75%～80%, and it is 20%～25% that water accounts for mass percent;
Wherein the mass percent of cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, the shared cement of stablizer each component, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and stablizer is as follows:
Cement 25%～35%,
Fine sand 35%～45%,
Inertia fleut 10%～20%,
Adjustable solidification agent 8%～12%,
Micro-expanding agent 2%～4%,
Superplasticizer 1.6%～2.8%,
Water-retaining admixture 0.04%～0.1%,
Anti-crack fiber 0.05%～0.1%,
Stablizer 0.1%～0.25%.
Described cement is that strength grade is any one in 32.5 or 42.5 silicate cements, ordinary Portland cement, the Portland blast.
Described fine sand is 70～140 order river sand.
Described inertia fleut CaCO
3Content 〉=95%, 325 mesh screen residue≤0.1; As dicalcium powder, dry powder or light calcium carbonate powder.
Described adjustable solidification agent is adjusted agent for the short type hardening of cement speed of coagulating; As quick hardening sulphoaluminate cement, dihydrate gypsum, anhydrite.
Described micro-expanding agent is the agent of commercially available KH shrinkage-compensating, and the main chemical compositions of its expansion component is CaF
26.4% (quality), Al
2O
318.0% (quality), SO
327.5% (quality), CaO 40.0% (quality), other 8.1% (quality).
Described superplasticizer is any one or any mixture that (contains any two kinds) more than two kinds in (a kind of polymer powder) vinyl acetate-ethylene copolymer dry powder, polyethylene dry powder, the polyacrylic ester dry powder, and any is any proportioning when mixing more than two kinds.
Described water-retaining admixture is composited by inorganic materials-organic materials, and the mass ratio of inorganic materials and organic materials is (8～10): 1, and the inorganic materials component is mainly Al
2O
3SiO
3H
2O, water regain is 2000% of its weight; The organic materials component is mainly the small molecules ethers, and water regain reaches 500～700 times.As methyl cellulose ether, hydroxypropyl methyl cellulose ether or hydroxyethyl ether cellulose.
Described anti-crack fiber is a polypropylene fibre, alkali resistant glass fibre, and nylon fiber, any one in the animal and plant fiber or any mixture that (contains any two kinds) more than two kinds, any is any proportioning when mixing more than two kinds, staple length is 6～10mm.
Described stablizer is commercially available AFK-2 stablizer, commercially available tartrate stablizer or commercially available magnesiumcarbonate stablizer.
Beneficial effect of the present invention: this ultra-plasticizing gravity flow flat crack resistant mortar had both had gravity flowing levelling mortar good fluidity, good from the levelling ability, solidify and fast drying, the performance characteristics of low-shrinkage also has anticracking grout low temperature flexibility, splitting resistance, the characteristics that cohesive strength is high.Be specially:
1, splitting resistance is good
Owing to introduced fiber and improved the mortar internal structure, and itself do not reacted with other raw materials, so good affinity is arranged, can mix with other raw materials rapidly with mortar, distribution is extremely even, thorough.Observe by electron microscopic study, in mortar, form a kind of even unrest, structural stress is disperseed, thereby produce effective secondary stiffening effect to the network system that distributes.
Effect of contraction for crack generation and development, the linear elasticity theory of mechanics is thought: in the inner defective that originally just exists of mortar, desire improves intensity, must reduce the degree of defective as much as possible, improve toughness, reduce the stress concentration factor of internal fissure end, its cracking resistance effect depends primarily on the average headway of fiber.Fiber is made three-dimensional random average headway to distribution and be can be represented by the formula in structure:
In the formula, the mean distance of S---fibrillar center; D, V
f---be respectively the diameter and the volume fraction of fiber.
Theoretical and when experiment showed, that average between centers when fiber is less than 7.6mm, its tension, bending resistance first crack strength are improved.
The unrest of fiber has weakened the string stress of mortar greatly to distributing.Shrink energy and be dispersed on the fiber yarn that has the high strength low elastic modulus in the mortar, fiber absorbs portion of energy, greatly improve its snappiness, suppressed the generation and the development of microscopic checks, reach the purpose of fibre crack-resistance.The introducing of fiber simultaneously can be alleviated the effect of the mortar internal stress that temperature variation causes, stops the expansion of microfracture, therefore has the effect of temperature difference compensation cracking resistance.
Fibre-reinforced anti-crack mortar not only has good resistance to cleavage, and its impervious water resistance, shock resistance all obviously are better than ordinary mortar.
2. low-shrinkage
For reaching early stage zero purpose of shrinking of mortar, according to the materialogy principle, the micro-expanding agent of in raw material, introducing that expansion is arranged, owing to after aquation, generate a large amount of swelling property crystal, increased the crystalline content in the mortar, produce volumetric expansion, produce stress and compressive strain in the body, compensated all kinds of shrinkage strains, offset or partial offset corresponding tensile stress, thereby improved whole splitting resistance.It produces the expansible reason mainly by three aspects:
Component X passive film when hydrated cementitious dissolves gradually in a, the shrinkage-compensating agent, produces chemical reaction and generates tiny in a large number, equally distributed CAB, produces volumetric expansion.The X material reacts in the hydrated cementitious system comparatively fast, is the main source that makes cement stone or mortar early expansion, and the expansion energy of generation compensates the early stage plastic shrinkage of mortar preferably.
Chemical reaction generation spawn takes place in component Y in b, the shrinkage-compensating agent when hydrated cementitious, volumetric expansion, and the space in the filling concrete stone makes cement stone more fine and close.
C, the generation of calcium sulphoaluminate hydrate (ettringite) is arranged, its reaction expression is: 6Ca+3Al
2O
3+ 3SO
3+ 32H
2O → 3CaOAl
2O
3+ 3CaSO
432H
2O
Test shows that the mortar after passing through fiber reinforcement and material compensation is handled is compared with common gravity flowing levelling mortar, and the average shrinkage value is reduced to 2/0,000 by 1,0/0,000, on average reduces by 80%.
3. flexible good
Owing to introduce superplasticizer, along with the carrying out of hydrated cementitious, it almost all is wrapped in aggregate and hydrated cementitious particle outside, the space middle (except the pore) that the filling concrete aquation is crystal formation, between grout and aggregate, form film, and stop up the hole in the mortar with higher cohesive force.Hydrated cementitious and polymer film forming carry out simultaneously, form be interweaved together inierpeneirating network structure of grout and polymeric film at last.This structure has obviously increased the snappiness of cement-based material.Experiment shows, compares with common gravity flowing levelling mortar, and suitably the superplasticizer of volume makes the ultra-plasticizing gravity flow flat crack resistant mortar backfin than reducing more than 50%, and 5% flexural deformation also flawless produces, and workability obviously strengthens.
4, cohesive strength height
Water-retaining admixture has excellent dispersion and water retention, and its dispersion energy effectively and very is evenly distributed in the mortar superplasticizer on the one hand, and wraps all solid granulates, and forms one deck wetting film, keeps moisture.Its water retention just progressively discharges the moisture of parcel in the quite a long time on the other hand, even under the scorching temperature environment, gelling material also has competent moisture and time that hydration reaction takes place, thereby has guaranteed the cohesive strength and the ultimate compression strength of mortar.
5, solidify and fast drying
Adjust agent owing to introduced the short type hardening of cement speed of coagulating, can accelerate the hydration rate of sand-cement slurry, shorten time of coagulation.
6, good fluidity
Small molecules ether composition in the water-retaining admixture is to handle through etherificate, has excellent dispersiveness.And the superplasticizer of being introduced has reduced the surface tension and the surface energy of water in the mortar, in mortar mixture whipping process, produces the bubble of not vanishing small in a large number, high dispersing, and amount of air entrainment reaches about 5%, makes the surface-area of whole state increase good fluidity.
In sum, utilize the materialogy principle, the ultra-plasticizing gravity flow flat crack resistant mortar of design has the characteristics such as little, that water retention property good, cohesive strength is high and resistance to cleavage is good of self shrinking.
Shown in the table with test results 1 of this ultra-plasticizing gravity flow flat crack resistant mortar.
Table 1 ultra-plasticizing gravity flow flat crack resistant mortar test result
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
A kind of ultra-plasticizing gravity flow flat crack resistant mortar, it is mixed by cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water, cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and the shared mass percent of stablizer are 78%, and it is 22% that water accounts for mass percent;
Cement is 42.5 grades of ordinary Portland cements; Fine sand is 70 order river sand; The inertia fleut is a dicalcium powder; Adjustable solidification agent is that Xiaogan phoenix cement mill produces quick hardening sulphoaluminate cement; Micro-expanding agent is the agent of commercially available KH-1 shrinkage-compensating; Superplasticizer is composited by polyethylene and vinyl acetate-ethylene copolymer dry powder, and the mass ratio of polyethylene and vinyl acetate-ethylene copolymer dry powder is 1: 1; Water-retaining admixture is a methyl cellulose ether; Anti-crack fiber is a polypropylene fibre, and staple length is 6～10mm; Stablizer is commercially available AFK-2 stablizer;
Cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer each component shared (quality of cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and stablizer) mass percent are as follows:
42.5 level ordinary Portland cement 30%, 70 order river sand 38%, dicalcium powder 17%, quick hardening sulphoaluminate cement 10.5%, shrinkage-compensating agent 2.3%, superplasticizer 1.8%, methyl cellulose ether (viscosity 60000Pas) 0.05%, polypropylene fibre 0.1%, commercially available AFK-2 stablizer 0.25%.
The preparation of above-mentioned a kind of ultra-plasticizing gravity flow flat crack resistant mortar: cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water are mixed, get product.
Embodiment 2:
A kind of ultra-plasticizing gravity flow flat crack resistant mortar, it is mixed by cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water, cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and the shared mass percent of stablizer are 79%, and it is 21% that water accounts for mass percent;
Cement is 42.5 grades of ordinary Portland cements; Fine sand is 70 order river sand; The inertia fleut is a dry powder; Adjustable solidification agent is Yingcheng City, Hubei dihydrate gypsum; Micro-expanding agent is the agent of commercially available KH-1 shrinkage-compensating; Superplasticizer is a vinyl acetate-ethylene copolymer dry powder; Water-retaining admixture is a methyl cellulose ether; Anti-crack fiber is the outstanding alkali resistant glass fibre of Xiangfan remittance that, and staple length is 6～10mm; Stablizer is commercially available tartrate stablizer;
Cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer each component shared (quality of cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and stablizer) mass percent are as follows:
42.5 level ordinary Portland cement 29%, 70 order river sand 42%, dry powder 15%, dihydrate gypsum 9%, shrinkage-compensating agent 2.6%, superplasticizer 2.2%, methyl cellulose ether (viscosity 100000Pas) 0.06%, alkali resistant glass fibre 0.04%, commercially available tartrate stablizer 0.1%.
The preparation of above-mentioned a kind of ultra-plasticizing gravity flow flat crack resistant mortar: cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water are mixed, get product.
Embodiment 3:
A kind of ultra-plasticizing gravity flow flat crack resistant mortar, it is mixed by cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water, cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and the shared mass percent of stablizer are 76%, and it is 24% that water accounts for mass percent;
Cement is 42.5 grades of ordinary Portland cements; Fine sand is 70 order river sand; The inertia fleut is a dry powder; Adjustable solidification agent is that Xiaogan phoenix cement mill produces quick hardening sulphoaluminate cement; Micro-expanding agent is the agent of commercially available KH-1 shrinkage-compensating; Superplasticizer is a polyethylene dry powder; Water-retaining admixture is a hydroxypropyl methyl cellulose ether; The nylon fiber that anti-crack fiber is produced for Tai'an companion, staple length is 6～10mm; Stablizer is commercially available magnesiumcarbonate stablizer;
Cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer each component shared (quality of cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and stablizer) mass percent are as follows:
42.5 level ordinary Portland cement 32%, 70 order river sand 40%, dry powder 12%, quick hardening sulphoaluminate cement 10%, shrinkage-compensating agent 3.8%, polyethylene dry powder 2%, hydroxypropyl methyl cellulose ether (viscosity 100000Pas) 0.05%, nylon fiber 0.05%, commercially available magnesiumcarbonate stablizer 0.1%.
The preparation of above-mentioned a kind of ultra-plasticizing gravity flow flat crack resistant mortar: cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water are mixed, get product.
Embodiment 4:
A kind of ultra-plasticizing gravity flow flat crack resistant mortar, it is mixed by cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water, cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and the shared mass percent of stablizer are 80%, and it is 20% that water accounts for mass percent;
Cement is 42.5 silicate cements; Fine sand is 70 order river sand; The inertia fleut is a dicalcium powder; Adjustable solidification agent is that Xiaogan phoenix cement mill produces quick hardening sulphoaluminate cement; Micro-expanding agent is the agent of commercially available KH-1 shrinkage-compensating; Superplasticizer is composited by polyacrylic ester dry powder and vinyl acetate-ethylene copolymer dry powder, and the mass ratio of polyacrylic ester dry powder and vinyl acetate-ethylene copolymer dry powder is 1: 2; Water-retaining admixture is a methyl cellulose ether; The vegetable fibre that anti-crack fiber provides for Foshan Bao Lima, staple length are 6～10mm; Stablizer is commercially available AFK-2 stablizer;
Cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer each component shared (cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and stablizer total mass) mass percent are as follows:
42.5 silicate cement 25%, 70 order river sand 45%, dicalcium powder 14.21%, quick hardening sulphoaluminate cement 12%, shrinkage-compensating agent 2.0%, superplasticizer 1.6%, methyl cellulose ether (viscosity 60000Pas) 0.04%, vegetable fibre 0.05%, commercially available AFK-2 stablizer 0.1%.
The preparation of above-mentioned a kind of ultra-plasticizing gravity flow flat crack resistant mortar: cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water are mixed, get product.
Embodiment 5:
A kind of ultra-plasticizing gravity flow flat crack resistant mortar, it is mixed by cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water, cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and the shared mass percent of stablizer are 75%, and it is 25% that water accounts for mass percent;
Cement is Portland blast; Fine sand is 140 order river sand; The inertia fleut is a light calcium carbonate powder; Adjustable solidification agent is an anhydrite; Micro-expanding agent is the agent of commercially available KH-1 shrinkage-compensating; Superplasticizer is a polyethylene dry powder; Water-retaining admixture is a hydroxyethyl ether cellulose; Anti-crack fiber is produced nylon fiber for Tai'an companion, and staple length is 6～10mm; Stablizer is commercially available magnesiumcarbonate stablizer;
Cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer each component shared (cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and stablizer total mass) mass percent are as follows:
Portland blast 35%, 140 order river sand 35%, light calcium carbonate powder 14.9%, anhydrite 8%, shrinkage-compensating agent 4%, polyethylene dry powder 2.8%, hydroxyethyl ether cellulose (viscosity 100000Pas) 0.1%, nylon fiber 0.1%, commercially available magnesiumcarbonate stablizer 0.1%.
The preparation of above-mentioned a kind of ultra-plasticizing gravity flow flat crack resistant mortar: cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water are mixed, get product.
Claims (10)
1. ultra-plasticizing gravity flow flat crack resistant mortar, it is characterized in that being that it is mixed by cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, stablizer and water, cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and the shared mass percent of stablizer are 75%～80%, and it is 20%～25% that water accounts for mass percent;
Wherein the mass percent of cement, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber, the shared cement of stablizer each component, fine sand, inertia fleut, adjustable solidification agent, micro-expanding agent, superplasticizer, water-retaining admixture, anti-crack fiber and stablizer is as follows:
Cement 25%～35%,
Fine sand 35%～45%,
Inertia fleut 10%～20%,
Adjustable solidification agent 8%～12%,
Micro-expanding agent 2%～4%,
Superplasticizer 1.6%～2.8%,
Water-retaining admixture 0.04%～0.1%,
Anti-crack fiber 0.05%～0.1%,
Stablizer 0.1%～0.25%.
2. a kind of ultra-plasticizing gravity flow flat crack resistant mortar according to claim 1 is characterized in that: described cement is that strength grade is any one in 32.5 or 42.5 silicate cements, ordinary Portland cement, the Portland blast.
3. a kind of ultra-plasticizing gravity flow flat crack resistant mortar according to claim 1 is characterized in that: described fine sand is 70～140 order river sand.
4. a kind of ultra-plasticizing gravity flow flat crack resistant mortar according to claim 1 is characterized in that: described inertia fleut CaCO
3Content 〉=95%, 325 mesh screen residue≤0.1.
5. a kind of ultra-plasticizing gravity flow flat crack resistant mortar according to claim 1 is characterized in that: described adjustable solidification agent is adjusted agent for the short type hardening of cement speed of coagulating.
6. a kind of ultra-plasticizing gravity flow flat crack resistant mortar according to claim 1 is characterized in that: described micro-expanding agent is the agent of commercially available KH shrinkage-compensating, and the main chemical compositions of its expansion component is CaF
26.4% (quality), Al
2O
318.0% (quality), SO
327.5% (quality), CaO 40.0% (quality), other 8.1% (quality).
7. a kind of ultra-plasticizing gravity flow flat crack resistant mortar according to claim 1, it is characterized in that: described superplasticizer is any one or any mixture more than two kinds in vinyl acetate-ethylene copolymer dry powder, polyethylene dry powder, the polyacrylic ester dry powder, and any is any proportioning when mixing more than two kinds.
8. a kind of ultra-plasticizing gravity flow flat crack resistant mortar according to claim 1, it is characterized in that: described water-retaining admixture is composited by inorganic materials-organic materials, the mass ratio of inorganic materials and organic materials is (8～10): 1, and the inorganic materials component is mainly Al
2O
3SiO
3H
2O, water regain is 2000% of its weight; The organic materials component is mainly the small molecules ethers, and water regain reaches 500～700 times.
9. according to the described a kind of ultra-plasticizing gravity flow flat crack resistant mortar of claim 1, it is characterized in that: described anti-crack fiber is a polypropylene fibre, alkali resistant glass fibre, nylon fiber, in the animal and plant fiber any one or any mixture more than two kinds, any is any proportioning when mixing more than two kinds, and staple length is 6～10mm.
10. according to the described a kind of ultra-plasticizing gravity flow flat crack resistant mortar of claim 1, it is characterized in that: described stablizer is commercially available AFK-2 stablizer, commercially available tartrate stablizer or commercially available magnesiumcarbonate stablizer.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253400C (en) * | 2004-07-16 | 2006-04-26 | 张志峰 | Fiber-reinforced polymer modified crack resistant mortar |
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2008
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