CN104140230B - A kind of gas concrete dry-mixed plastering mortar and preparation method thereof - Google Patents
A kind of gas concrete dry-mixed plastering mortar and preparation method thereof Download PDFInfo
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- CN104140230B CN104140230B CN201410365678.XA CN201410365678A CN104140230B CN 104140230 B CN104140230 B CN 104140230B CN 201410365678 A CN201410365678 A CN 201410365678A CN 104140230 B CN104140230 B CN 104140230B
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 101
- 239000004567 concrete Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 60
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000010455 vermiculite Substances 0.000 claims abstract description 28
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 28
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 28
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 24
- 239000004743 Polypropylene Substances 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 22
- -1 polypropylene Polymers 0.000 claims abstract description 22
- 229920001155 polypropylene Polymers 0.000 claims abstract description 22
- 239000002893 slag Substances 0.000 claims abstract description 22
- 239000010881 fly ash Substances 0.000 claims abstract description 21
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 20
- 235000013312 flour Nutrition 0.000 claims abstract description 20
- 235000009566 rice Nutrition 0.000 claims abstract description 20
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 18
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 18
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 18
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004816 latex Substances 0.000 claims abstract description 18
- 229920000126 latex Polymers 0.000 claims abstract description 18
- 229920002472 Starch Polymers 0.000 claims abstract description 17
- 150000002170 ethers Chemical class 0.000 claims abstract description 17
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims abstract description 17
- 229930182490 saponin Natural products 0.000 claims abstract description 17
- 150000007949 saponins Chemical class 0.000 claims abstract description 17
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 17
- 239000008107 starch Substances 0.000 claims abstract description 17
- 235000019698 starch Nutrition 0.000 claims abstract description 17
- 239000003469 silicate cement Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 244000269722 Thea sinensis Species 0.000 claims abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 241000209094 Oryza Species 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 14
- 239000000661 sodium alginate Substances 0.000 claims description 14
- 229940005550 sodium alginate Drugs 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 235000011837 pasties Nutrition 0.000 claims description 2
- 238000009472 formulation Methods 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 3
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 241001122767 Theaceae Species 0.000 description 13
- 238000005336 cracking Methods 0.000 description 8
- 239000004568 cement Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000011505 plaster Substances 0.000 description 4
- 208000034189 Sclerosis Diseases 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 150000008130 triterpenoid saponins Chemical class 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a kind of gas concrete dry-mixed plastering mortar, it is made up of the component of following mass percentage: 20 ~ 30% silicate cements, 10 ~ 20% flyash, 5 ~ 10% slag powders, 0.3 ~ 0.5% starch ethers, 1 ~ 3% diatomite, 3 ~ 5% sodium alginates, 0.3 ~ 0.5% hydroxypropyl methyl cellulose ether, 0.5 ~ 1%VAE redispersable latex powder, 0.05 ~ 0.1% polypropylene fibre, 5 ~ 10% performance improvers, surplus is building fine sand, wherein performance improver is made up of the component of following mass percentage: 1 ~ 3% tea saponin, 0.5 ~ 1% Rhizoma amorphophalli powder, 5 ~ 10% Graphenes, 10 ~ 20% vermiculite powers, 5 ~ 10% Sunmorl N 60Ss, surplus is sticky rice flour.Gas concrete dry-mixed plastering mortar scientific formulation of the present invention is reasonable, and cost is low, and workability, water-retentivity and splitting resistance are good, and cohesiveness is strong, and shrinking percentage is low, has broad application prospects.Present invention also offers a kind of preparation method of gas concrete dry-mixed plastering mortar, this preparation method's processing step is simple, workable, is applicable to large-scale industrial production.
Description
Technical field
The present invention relates to a kind of motar, especially relate to a kind of gas concrete dry-mixed plastering mortar and preparation method thereof.
Background technology
Gas concrete has light weight, good heat preservation performance, the feature such as energy-conservation, is the novel wall material of national encourage growth.But obturator foramen micro-hole structural, the water suction time length of gas concrete are long, poor with the adhesive property of mortar, and coat of plaster hollowing, cracking phenomena are very general, have become the common quality defect of China's plastering engineering.Therefore increasing substantially motar of air-entrained concrete water-retentivity, application property, cohesiveness and splitting resistance is improve, improve the key of aerated concrete wall construction quality, it is the backward state changing China's mortar as early as possible simultaneously, promote industrialized level and the state of the art of mortar production, mortar development is made to include Sustainable development track in, the form of production of mortar must be changed, mortar is produced and changes factorial praluction into from on-the-spot mixing, namely develop dry-mixed mortar.
Application publication number CN102701675A, the Chinese patent of Shen Qing Publication day 2012.10.03 discloses one and to plaster dry-mix, comprises following raw materials in part by weight: 32.5 composite Portland cement 11-25 parts, dry river sand 69-83 part, flyash 5-8 part, hydroxypropyl methyl cellulose ether 0.07 part, black talc 1.2 parts, calcium formiate powder 0-0.4 part, triterpenoid saponin powder 0-0.04 part.The weak point of this dry-mix of plastering is: (one) river sand too high levels, and cohesive strength is poor, easy dry linting and hollowing; (2) each component in this mortar is easily separated and produce bleed and bleeding, affects normal condensation and the sclerosis of mortar; (3) water retention property of this mortar is poor, and moisture loss is fast, causes mortar strength not high.
Summary of the invention
The present invention is that the dry-mixed plastering mortar in order to solve prior art easily produces the problems such as cracking, hollowing even come off when plastering for gas concrete metope, provide a kind of scientific formulation reasonable, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, the gas concrete dry-mixed plastering mortar that shrinking percentage is low.
Present invention also offers a kind of preparation method of gas concrete dry-mixed plastering mortar, this preparation method's processing step is simple, workable, is applicable to large-scale industrial production.
To achieve these goals, the present invention is by the following technical solutions:
A kind of gas concrete dry-mixed plastering mortar, it is made up of the component of following mass percentage: 20 ~ 30% silicate cements, 10 ~ 20% flyash, 5 ~ 10% slag powders, 0.3 ~ 0.5% starch ethers, 1 ~ 3% diatomite, 3 ~ 5% sodium alginates, 0.3 ~ 0.5% hydroxypropyl methyl cellulose ether, 0.5 ~ 1%VAE redispersable latex powder, 0.05 ~ 0.1% polypropylene fibre, 5 ~ 10% performance improvers, surplus is building fine sand, wherein said performance improver is made up of the component of following mass percentage: 1 ~ 3% tea saponin, 0.5 ~ 1% Rhizoma amorphophalli powder, 5 ~ 10% Graphenes, 10 ~ 20% vermiculite powers, 5 ~ 10% Sunmorl N 60Ss, surplus is sticky rice flour.Mesosilicic acid salt cement of the present invention is gelinite, slag powders forms the aggregate of mortar with building fine sand, mix flyash in the present invention and replace cement with cost-saving, in addition, flyash also helps the mobility of mortar and the raising of water-retentivity, and if fly ash content more than 20%, tension, the cohesive strength of mortar can significantly reduce, and therefore the add-on of flyash controls 10 ~ 20%, starch ethers can reduce the vertical flow process degree of fresh mortar, greatly can improve the workability of mortar, diatomite self is porous mass, and specific surface area is comparatively large, and has-OH the key of adsorptive power between structure, and therefore each component of adsorbable mortar inside makes mortar more closely knit thus improves the intensity of mortar, sodium alginate has very strong lock water-based, make motar to be smeared to after on aerated concrete wall can after stop moisture to be absorbed fast by body of wall, thus make the hydrated cementitious in mortar more abundant, effectively suppress the cracking phenomena that motar causes because aerated concrete wall water-intake rate is large, hydroxypropyl methyl cellulose ether has enough water retention capacities, can prevent the excessive vaporization of moisture and the water suction of basic unit and ftractures and reduce the intensity of mortar, and can impel the even fusion of gelling material and mortar particle, improving the workability of mortar, VAE redispersable latex powder itself is containing tensio-active agent, the workability of mortar can be improved, reduce the wet density of mortar simultaneously, also can increase the folding strength of mortar, and the water resistance of the mortar after sclerosis can be improved, the most important thing is that VAE redispersable latex powder can dehydration in mortar hardening process, form polymer film structure and cover mortar particle surface and be filled with space in mortar, mortar hardening is made to be subject to not produce stress concentration during convergent force, reduce cracking, and this membrane structure also has toughness and elasticity, act synergistically with after mortar hardening of cement, improve the performance of mortar, polypropylene fibre has toughness reinforcing, effect of prestressed significantly.The present invention have also been devised a kind of performance improver in addition, this performance improver can improve the performance of mortar greatly, tea saponin in performance improver is conducive to the multiviscosisty of mortar, the surface that simultaneously can be adsorbed on pulp particle forms one deck hydration shell, reduce the magnetism between mortar particle, the frictional force between particle can be reduced when stirring, mortar is more easily stirred, and component in mortar is more easily dispersed, be conducive to the homogeneity improving mortar, the viscosity of Rhizoma amorphophalli powder is very large, greatly can improve the adhesive property of mortar, thoroughly can solve the problem of bonding force difference between traditional mortar and gas concrete metope, Rhizoma amorphophalli powder has good intumescent filler performance simultaneously, the volumetric shrinkage of mortar can be compensated, avoid coat of plaster to cause finish plaster to ftracture because dry shrinkage stress is excessive, Graphene has good heat conductivility, greatly can not only improve the adhesion property of mortar, greatly can also improve the heat conductivility of mortar, mortar internal and external temperature in process of setting effectively can be avoided inconsistent and cause thermal stress, cause the Large Area Cracking on floated coat surface and come off, but Graphene can not effectively disperse in mortar, can reunite, therefore the present invention is by adding vermiculite power to address this problem, vermiculite power has good cationic exchange and adsorptivity, the structure of mortar can be improved, improve the water retention property of mortar, the most important thing is, vermiculite power can be used as the carrier of Graphene in performance improver, firmly adsorb Graphene, Graphene monomer is avoided to reunite, so that Graphene can be uniformly dispersed in mortar, Sunmorl N 60S can suppress cement granules condense or be attracted to the cenotype particle surface of hydrated cementitious formation after infiltrating, delay the aquation of cement and the formation of structure, extend the time of coagulation of mortar, Use Limitation can be extended, thus the requirement of longer engineering time can be met, but Sunmorl N 60S can make to remain more free water in system simultaneously, increase the mobility of mortar, make the cohesiveness of mortar poor, its workability can be affected, therefore sticky rice flour is added in the present invention to address this problem, sticky rice flour viscosity is high, the cohesiveness of mortar can be improved, and improve the adhesive property of mortar, sticky rice flour can also avoid each component in mortar be not separated and produce bleed and bleeding simultaneously, ensure normal condensation and the sclerosis of mortar, and improve mortar strength.The present invention develops the special dry-mixed plastering mortar of a kind of gas concrete metope according to building site practical application and lot of experiments, gas concrete dry-mixed plastering mortar scientific formulation of the present invention is reasonable, cost is low, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, shrinking percentage is low, effectively overcomes traditional mortar for the common quality defect such as cracking, hollowing existed during gas concrete, has broad application prospects.
As preferably, the particle diameter of described slag powders is 3 ~ 10 μm.
As preferably, described building fine sand fineness modulus is 1 ~ 2.
As preferably, described polypropylene fibre equivalent diameter is 10 ~ 30 μm, and length is 8 ~ 12mm.
As preferably, the particle diameter of described vermiculite power is 1 ~ 1.5mm.
A preparation method for gas concrete dry-mixed plastering mortar, comprises the following steps:
(1) after taking tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, ethanol is added after Graphene and vermiculite power being mixed, grinding 5 ~ 10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver.In ethanol vermiculite power and Graphene are ground, to ensure that Graphene can be uniformly dispersed and is evenly attached to vermiculite power surface, to ensure the consistence of mortar.
(2) silicate cement is taken by proportioning, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand after, by silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, at 40 ~ 50 DEG C, 30 ~ 60min is toasted after performance improver and the mixing of building fine sand, grind 10 ~ 30min again, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.Sticky rice flour is moisture absorption caking very easily, toasts 30 ~ 60min to remove moisture, ensures the shatter value of dry-mixed mortar of the present invention, improve keeping quality, and be conducive to each component grinding distribution after baking, can further improve the homogeneity of dry-mixed mortar of the present invention at 40 ~ 50 DEG C.
As preferably, in step (1), the add-on of ethanol is as the criterion in the pasty state to make Graphene and vermiculite power.
Therefore, the present invention has following beneficial effect:
(1) the special dry-mixed plastering mortar of a kind of gas concrete metope is developed according to building site practical application and lot of experiments, gas concrete dry-mixed plastering mortar scientific formulation of the present invention is reasonable, cost is low, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, shrinking percentage is low, effectively overcomes traditional mortar for the common quality defect such as cracking, hollowing existed during gas concrete, has broad application prospects;
(2) provide a kind of preparation method of gas concrete dry-mixed plastering mortar, this preparation method's processing step is simple, workable, is applicable to large-scale industrial production.
Embodiment
Below by embodiment, the present invention will be further described.
In the present invention, if not refer in particular to, all per-cent is weight unit, and all devices and raw material all can be buied from market or the industry is conventional, and the method in following embodiment, if no special instructions, is this area ordinary method.
Embodiment 1
A kind of gas concrete dry-mixed plastering mortar, be made up of the component of following mass percentage: 22% silicate cement, 15% flyash, 7% slag powders, 0.4% starch ethers, 2% diatomite, 4% sodium alginate, 0.4% hydroxypropyl methyl cellulose ether, 0.6%VAE redispersable latex powder, 0.08% polypropylene fibre, 7% performance improver, surplus is building fine sand, in mortar, the particle diameter of slag powders is 5 μm, building fine sand fineness modulus is 1.5, polypropylene fibre equivalent diameter is 12 μm, length is 10mm, performance improver is made up of the component of following mass percentage: 2% tea saponin, 0.6% Rhizoma amorphophalli powder, 6% Graphene, 12% vermiculite power, 7% Sunmorl N 60S, surplus is sticky rice flour, the particle diameter of vermiculite power is 1.2mm.
The preparation method of this gas concrete dry-mixed plastering mortar is as follows:
(1) after taking tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, ethanol is added after Graphene and vermiculite power being mixed, grinding 7min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) after taking silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand by proportioning, at 45 DEG C, 35min is toasted after silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, performance improver and building fine sand being mixed, grind 15min again, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
Embodiment 2
A kind of gas concrete dry-mixed plastering mortar, be made up of the component of following mass percentage: 20% silicate cement, 10% flyash, 5% slag powders, 0.3% starch ethers, 1% diatomite, 3% sodium alginate, 0.3% hydroxypropyl methyl cellulose ether, 0.5%VAE redispersable latex powder, 0.05% polypropylene fibre, 5% performance improver, surplus is building fine sand, in mortar, the particle diameter of slag powders is 3 μm, building fine sand fineness modulus is 1, polypropylene fibre equivalent diameter is 10 μm, length is 8mm, performance improver is made up of the component of following mass percentage: 1% tea saponin, 0.5% Rhizoma amorphophalli powder, 5% Graphene, 10% vermiculite power, 5% Sunmorl N 60S, surplus is sticky rice flour, the particle diameter of vermiculite power is 1mm.
The preparation method of this gas concrete dry-mixed plastering mortar is as follows:
(1) after taking tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, ethanol is added after Graphene and vermiculite power being mixed, grinding 5 ~ 10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) after taking silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand by proportioning, at 40 DEG C, 60min is toasted after silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, performance improver and building fine sand being mixed, grind 10min again, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
Embodiment 3
A kind of gas concrete dry-mixed plastering mortar, be made up of the component of following mass percentage: 30% silicate cement, 20% flyash, 10% slag powders, 0.5% starch ethers, 3% diatomite, 5% sodium alginate, 0.5% hydroxypropyl methyl cellulose ether, 1%VAE redispersable latex powder, 0.1% polypropylene fibre, 10% performance improver, surplus is building fine sand, in mortar, the particle diameter of slag powders is 10 μm, building fine sand fineness modulus is 2, polypropylene fibre equivalent diameter is 30 μm, length is 12mm, performance improver is made up of the component of following mass percentage: 3% tea saponin, 1% Rhizoma amorphophalli powder, 10% Graphene, 20% vermiculite power, 10% Sunmorl N 60S, surplus is sticky rice flour, the particle diameter of vermiculite power is 1.5mm.
The preparation method of this gas concrete dry-mixed plastering mortar is as follows:
(1) after taking tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, ethanol is added after Graphene and vermiculite power being mixed, grinding 10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) after taking silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand by proportioning, at 50 DEG C, 30min is toasted after silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, performance improver and building fine sand being mixed, grind 30min again, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
The performance of the gas concrete dry-mixed plastering mortar obtained by the present invention is as follows:
| Project | Performance index | JC890-2001 requirement |
| Denseness/mm | 70～85 | —— |
| Bleeding rate/% | 1～1.2 | —— |
| Delamination degree/mm | 5～8 | ≤20 |
| Dry density/(kg/m 3) | 1620～1750 | ≤1800 |
| Ultimate compression strength/MPa | 9～10.3 | ≥5 |
| Folding strength/ultimate compression strength | 0.31～0.38 | —— |
| Tensile strength/MPa | 1.7～1.92 | —— |
| With gas concrete cohesive strength/MPa | 0.51～0.63 | ≥0.15 |
| Shear bonding strength/MPa | 1～1.1 | —— |
| Shrinking percentage/(mm/m) | 0.32～0.58 | ≤1.1 |
| Energy-to-break/(J/m 2) | 53.1～62.3 | —— |
| Largest deformation amount/mm | 2～3 | —— |
As can be known from the above table, mortar performance of the present invention meets the requirement that JC890-2001 specifies completely, workability, water-retentivity and splitting resistance are good, cohesiveness is strong, shrinking percentage is low, effectively overcome traditional mortar for the common quality defect such as cracking, hollowing existed during gas concrete, have broad application prospects.
Claims (7)
1. a gas concrete dry-mixed plastering mortar, it is characterized in that, it is made up of the component of following mass percentage: 20 ~ 30% silicate cements, 10 ~ 20% flyash, 5 ~ 10% slag powders, 0.3 ~ 0.5% starch ethers, 1 ~ 3% diatomite, 3 ~ 5% sodium alginates, 0.3 ~ 0.5% hydroxypropyl methyl cellulose ether, 0.5 ~ 1%VAE redispersable latex powder, 0.05 ~ 0.1% polypropylene fibre, 5 ~ 10% performance improvers, surplus is building fine sand, wherein said performance improver is made up of the component of following mass percentage: 1 ~ 3% tea saponin, 0.5 ~ 1% Rhizoma amorphophalli powder, 5 ~ 10% Graphenes, 10 ~ 20% vermiculite powers, 5 ~ 10% Sunmorl N 60Ss, surplus is sticky rice flour.
2. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, the particle diameter of described slag powders is 3 ~ 10 μm.
3. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, described building fine sand fineness modulus is 1 ~ 2.
4. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, described polypropylene fibre equivalent diameter is 10 ~ 30 μm, and length is 8 ~ 12mm.
5. a kind of gas concrete dry-mixed plastering mortar according to claim 1, is characterized in that, the particle diameter of described vermiculite power is 1 ~ 1.5mm.
6. a preparation method for gas concrete dry-mixed plastering mortar as claimed in claim 1, is characterized in that, comprise the following steps:
(1) after taking tea saponin, Rhizoma amorphophalli powder, Graphene, vermiculite power, Sunmorl N 60S and sticky rice flour by proportioning, ethanol is added after Graphene and vermiculite power being mixed, grinding 5 ~ 10min post-drying, then mix with tea saponin, Rhizoma amorphophalli powder, Sunmorl N 60S and sticky rice flour, obtain performance improver;
(2) silicate cement is taken by proportioning, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, polypropylene fibre, performance improver and building fine sand after, by silicate cement, flyash, slag powders, starch ethers, diatomite, sodium alginate, hydroxypropyl methyl cellulose ether, VAE redispersable latex powder, at 40 ~ 50 DEG C, 30 ~ 60min is toasted after performance improver and the mixing of building fine sand, grind 10 ~ 30min again, finally add polypropylene fibre to mix, obtain building dry-mixed plastering mortar.
7. preparation method according to claim 6, is characterized in that, in step (1), the add-on of ethanol is as the criterion in the pasty state to make Graphene and vermiculite power.
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| CN105906289B (en) * | 2016-01-26 | 2018-09-18 | 广东电网有限责任公司电力科学研究院 | Concrete repairs dry-mixed mortar and preparation method thereof |
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| CN115572112A (en) * | 2022-10-14 | 2023-01-06 | 湖州三中新型建材科技有限公司 | Anti-cracking dry-mixed plastering mortar and preparation method thereof |
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| CN102557531A (en) * | 2010-12-11 | 2012-07-11 | 鞍钢房地产开发集团有限公司 | Dry-mixed surface mortar for external insulation of building exterior wall and preparation method thereof |
| WO2013048351A1 (en) * | 2011-09-27 | 2013-04-04 | Scg Building Materials Co., Ltd | Gypsum-based composition for construction material and system |
| US8382893B1 (en) * | 2012-03-09 | 2013-02-26 | Carpentercrete Llc | Cementitious compositions |
| CN103058605B (en) * | 2012-12-26 | 2014-09-10 | 上海天补建筑科技有限公司 | Lightweight surface mortar used for foamed cement boards and preparation method thereof |
| CN103086674A (en) * | 2013-01-08 | 2013-05-08 | 张立功 | Thermal insulation mortar emulsion powder and production process thereof |
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Denomination of invention: The invention relates to an aerated concrete dry mixed plastering mortar and a preparation method thereof Effective date of registration: 20211221 Granted publication date: 20160120 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: WENZHOU INNOVATIVE NEW MATERIALS LIMITED BY SHARE Ltd. Registration number: Y2021110000096 |