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Aerated concrete dry-blended plastering mortar and preparing method thereof

A technology for air-entrained concrete and plastering mortar, applied in the field of plastering mortar, can solve the problems of low shrinkage, hollowing, cracking, etc., and achieve the effects of low shrinkage, simple process steps and broad application prospects

Active Publication Date: 2014-11-12
WENZHOU INNOVATION NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of cracking, hollowing and even falling off when the dry-mixed plastering mortar in the prior art is used for plastering the aerated concrete wall, and provides a scientific and reasonable formula with workability, water retention and Air-entrained concrete dry-mix plastering mortar with good crack resistance, strong cohesion and low shrinkage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An air-entrained concrete dry-mixed plastering mortar, which is composed of the following components in mass percentage: 22% Portland cement, 15% fly ash, 7% slag powder, 0.4% starch ether, 2% diatomite , 4% sodium alginate, 0.4% hydroxypropyl methylcellulose ether, 0.6% VAE redispersible latex powder, 0.08% polypropylene fiber, 7% performance improver, the balance is building fine sand, slag powder in mortar The particle size is 5 μm, the fineness modulus of construction fine sand is 1.5, the polypropylene fiber equivalent diameter is 12 μm, and the length is 10 mm. The performance improver is composed of the following components in mass percentage: 2% tea saponin, 0.6% Konjac powder, 6% graphene, 12% vermiculite powder, 7% sodium gluconate, the balance is glutinous rice flour, and the particle size of the vermiculite powder is 1.2mm.

[0023] The preparation method of the air-entrained concrete dry-mixed plastering mortar is as follows:

[0024] (1) After weighing te...

Embodiment 2

[0027] An air-entrained concrete dry-mixed plastering mortar, which is composed of the following components in mass percentage: 20% Portland cement, 10% fly ash, 5% slag powder, 0.3% starch ether, 1% diatomite , 3% sodium alginate, 0.3% hydroxypropyl methylcellulose ether, 0.5% VAE redispersible latex powder, 0.05% polypropylene fiber, 5% performance improver, the balance is building fine sand, slag powder in mortar The particle size is 3 μm, the fineness modulus of construction fine sand is 1, the polypropylene fiber equivalent diameter is 10 μm, and the length is 8 mm. The performance improver is composed of the following components in mass percentage: 1% tea saponin, 0.5% Konjac powder, 5% graphene, 10% vermiculite powder, 5% sodium gluconate, the balance is glutinous rice flour, and the particle size of the vermiculite powder is 1mm.

[0028] The preparation method of the air-entrained concrete dry-mixed plastering mortar is as follows:

[0029] (1) After weighing tea sap...

Embodiment 3

[0032] An air-entrained concrete dry-mixed plastering mortar, which is composed of the following components in mass percentage: 30% Portland cement, 20% fly ash, 10% slag powder, 0.5% starch ether, 3% diatomite , 5% sodium alginate, 0.5% hydroxypropyl methylcellulose ether, 1% VAE redispersible latex powder, 0.1% polypropylene fiber, 10% performance improver, the balance is building fine sand, slag powder in mortar The particle size is 10 μm, the fineness modulus of construction fine sand is 2, the polypropylene fiber equivalent diameter is 30 μm, and the length is 12 mm. The performance improver is composed of the following components in mass percentage: 3% tea saponin, 1% Konjac powder, 10% graphene, 20% vermiculite powder, 10% sodium gluconate, the balance is glutinous rice flour, and the particle size of the vermiculite powder is 1.5 mm.

[0033] The preparation method of the air-entrained concrete dry-mixed plastering mortar is as follows:

[0034] (1) After weighing tea...

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Abstract

The invention discloses aerated concrete dry-blended plastering mortar which is composed of, by mass, 20%-30% of portland cement, 10%-20% of coal ash, 5%-10% of slag powder, 0.3%-0.5% of starch ether, 1%-3% of kieselguhr, 3%-5% of sodium alginate, 0.3%-0.5% of hydroxypropyl methyl cellulose ether, 0.5%-1% of VAE redispersible powder, 0.05%-0.1% of polypropylene fiber, 5%-10% of performance modifier and the balance building fine sand, wherein the performance modifier is composed of, by mass, 1%-3% of tea saponin, 0.5%-1% of konjaku flour, 5%-10% of graphene, 10%-20% of vermiculite powder, 5%-10% of sodium gluconate and the balance glutinous rice flour. The aerated concrete dry-blended plastering mortar is scientific and reasonable in formula, low in cost, good in workability, water-retaining property, crack resistance and caking property, low in shrinking percentage and broad in application prospect. The invention further provides a method for preparing the aerated concrete dry-blended plastering mortar. According to the method, the number of processing steps is small and operability is high. The method is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a plastering mortar, in particular to an aerated concrete dry-mixed plastering mortar and a preparation method thereof. Background technique [0002] Air-entrained concrete has the characteristics of light weight, good thermal insulation, and energy saving. It is a new type of wall material encouraged by the state. However, air-entrained concrete has a closed-cell micro-porous structure, long water absorption duration, poor bonding performance with mortar, and hollowing and cracking of the plaster layer are very common, which has become a common quality problem in plastering projects in my country. Therefore, it is the key to improve and improve the quality of air-entrained concrete wall engineering to greatly improve the water retention, construction, cohesiveness and crack resistance of air-entrained concrete plastering mortar. To bring the development of mortar into the track of sustainable development, it is necessary to c...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/30C04B24/38C04B16/06
CPCY02W30/91
Inventor 俞权锋
Owner WENZHOU INNOVATION NEW MATERIAL CO LTD
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