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Anti-cracking plastering gypsum mortar

A plastering gypsum and mortar technology, applied in the field of crack-resistant plastering gypsum mortar, can solve the problems of whitening, poor cohesion, wall bubbles, etc., and achieve increased durability, good workability, and high cohesion. Effect

Inactive Publication Date: 2018-11-13
安徽省万帮新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the plastering materials used in the plastering process of concrete interior walls and ceilings in my country are generally mixed mortar and cement mortar. The main disadvantages of this process are large dry shrinkage, poor cohesive force, complicated process, and low labor productivity.
Moreover, there are strict requirements on the treatment of the base layer and the strength of each layer of mortar. Once one of the links is not strictly controlled, it will lead to common quality problems such as hollowing, cracking, wall bubbles, blooming, and whitening of the plastering layer.
Directly use putty powder for leveling construction, the construction process has common quality problems such as easy aging of the wall surface, easy cracking and falling off of super thick parts

Method used

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  • Anti-cracking plastering gypsum mortar

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Comparison scheme
Effect test

Embodiment 1

[0022] A crack-resistant plastering gypsum mortar, comprising 60 parts by weight of high-temperature calcined gypsum, 35 parts of lime calcium powder, 15 parts of composite Portland cement, 5 parts of expanded perlite, 28 parts of fly ash, hydroxypropyl 0.04 parts of methyl cellulose ether, 0.02 parts of retarder, 0.02 parts of water reducer, 0.015 parts of starch ether, 13 parts of redispersible latex powder, 1.2 parts of polypropylene fiber, and 1 part of waterproofing agent.

[0023] Further, the fly ash is Class I fly ash and / or Class II fly ash.

[0024] Further, the high-temperature calcined gypsum is desulfurized anhydrite calcined at a temperature above 800 degrees Celsius in a power plant.

[0025] Further, the composite Portland cement is pc32.5 or pc42.5.

[0026] Further, the retarder is 20% of sugar retarder, 20% of organic phosphine retarder, 2% of polyether concrete air-entraining agent, and 58% of water; wherein the sugar retarder is sucrose and lemon A combi...

Embodiment 2

[0032] A crack-resistant plastering gypsum mortar, comprising 70 parts by weight of high-temperature calcined gypsum, 70 parts of lime calcium powder, 18 parts of composite Portland cement, 15 parts of expanded perlite, 28 parts of fly ash, hydroxypropyl 00.06 parts of methyl cellulose ether, 0.03 parts of retarder, 0.03 parts of water reducing agent, 0.015 parts of starch ether, 17 parts of redispersible latex powder, 1.5 parts of polypropylene fiber, and 1 part of waterproofing agent.

[0033] Further, the fly ash is Class I fly ash and / or Class II fly ash.

[0034] Further, the high-temperature calcined gypsum is desulfurized anhydrite calcined at a temperature above 800 degrees Celsius in a power plant.

[0035] Further, the composite Portland cement is pc32.5 or pc42.5.

[0036] Further, the retarder is 20% of sugar retarder, 20% of organic phosphine retarder, 2% of polyether concrete air-entraining agent, and 58% of water; wherein the sugar retarder is sucrose and lemon...

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Abstract

The invention discloses anti-cracking plastering gypsum mortar. The anti-cracking plastering gypsum mortar is prepared from the following raw materials: high-temperature calcined gypsum, ash calcium powder, composite portland cement, expanded perlite, fly ash, hydroxypropyl methyl cellulose ether, a retarder, a water reducing agent, starch ether, redispersible latex powder, polypropylene fibers and a waterproof agent. The invention provides the environment-friendly type lightweight bottom-layer plastering gypsum mortar which has good anti-cracking performance, has good heat insulation performance and can automatically adjusting temperature and humidity. By adopting the anti-cracking plastering gypsum mortar, the density of the mortar and the self weight of buildings can be effectively reduced; the anti-cracking plastering gypsum mortar has good sound insulation and noise reduction effects and has the advantages of uniformity in material preparation, convenience for construction, capability of being firmly stuck with a base layer, no hollowing, no falling, no cracks, fireproof and heat-resisting performance, heat insulation and sound insulation, greenness and environment protection,low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of mortar, and in particular relates to an anti-crack plastering gypsum mortar. Background technique [0002] At present, the plastering materials used in the plastering process of concrete interior walls and ceilings in my country are generally mixed mortar and cement mortar. The main disadvantages of this process are large dry shrinkage, poor cohesive force, complicated process, and low labor productivity. Moreover, there are strict requirements on the treatment of the base layer and the strength of each layer of mortar. Once one of the links is not strictly controlled, it will lead to common quality problems such as hollowing, cracking, wall bubbles, blooming, and whitening of the plastering layer. Directly use putty powder for leveling construction, and the construction process has common quality problems such as easy aging of the wall surface, and easy cracking and falling off of super-thick parts. Pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/34
CPCC04B28/144C04B2111/343C04B2201/50C04B22/064C04B7/02C04B14/185C04B18/08C04B24/383C04B24/10C04B24/003C04B24/32C04B24/06C04B2103/302C04B24/38C04B2103/0057C04B16/0633C04B24/281
Inventor 郭胡健孙连军胡万伟
Owner 安徽省万帮新型建材科技有限公司
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