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Fiber-reinforced polymer modified crack resistant mortar

An anti-cracking mortar and fiber-reinforced technology, which is applied in the field of fiber-reinforced polymer modified anti-cracking mortar, can solve the problems of large shrinkage deformation, large shrinkage, peeling, etc., and achieve improved crack resistance performance, improved water retention capacity, and reduced bleeding. Effect

Inactive Publication Date: 2005-03-16
奥捷科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the innovation of national wall materials and the deepening of the promotion and application of energy-saving buildings, many defects exposed by traditional mortar, such as wall leakage, ventilation, peeling and other problems caused by wall hollowing, cracking, falling off, etc., It is becoming more and more prominent in construction engineering, which seriously affects the quality of the project and normal use, and also restricts the popularization and application of thermal insulation materials
A large amount of data shows that the main reasons for these problems, in addition to the structural cracks caused by uneven foundation settlement, can be summarized as the following two aspects: one is the high water absorption rate and large shrinkage of the wall material itself; the other is the poor water retention of the mortar used , large shrinkage deformation, low bond strength, poor weather resistance and crack resistance, and unreasonable matching, etc.
However, the existing anti-cracking mortar does not fully consider the shrinkage of the material itself in the design, so it is necessary to add reinforcement materials after the mortar is formed to enhance its anti-cracking function, which makes the construction process complicated and is not conducive to the popularization and use of materials.

Method used

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  • Fiber-reinforced polymer modified crack resistant mortar

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Effect test

Embodiment 1

[0033] A fiber-reinforced polymer modified anti-cracking mortar, its components and content (weight) are: 1 part of anti-cracking rubber powder, 2 parts of cement, 12 parts of sand, and 2.3 parts of water; wherein: the composition of anti-cracking rubber powder Parts and content (weight) are: inorganic mineral powder 23.7%, alkali-resistant fiber 0.3%, volume stabilizer 32%, polymer modifier 44%, the cement used is 42.5 ordinary Portland cement, alkali-resistant fiber is poly Propylene fiber, the volume stabilizer is composed of expansion agent and anionic air-entraining agent according to the weight ratio of 5000:1, the polymer modifier is composed of vinyl acetate and carboxypropyl cellulose according to the weight ratio of 2:1, The surface layer is coated with a layer of penetrating waterproof curing fluid - the waterproof curing fluid is a commercially available acrylic organic elastic paint.

Embodiment 2

[0035] A fiber-reinforced polymer modified anti-cracking mortar, its components and content (weight) are: 1 part of anti-cracking rubber powder, 2.5 parts of cement, 10 parts of sand, and 2 parts of water; wherein: the composition of anti-cracking rubber powder Parts and content (weight): 30% of inorganic mineral powder, 1% of alkali-resistant fiber, 39% of volume stabilizer, and 30% of polymer modifier. The cement used is 42.5 sulfoaluminate cement, the alkali-resistant fiber is nylon fiber, the volume stabilizer is composed of expansion agent and anionic air-entraining agent in a weight ratio of 5000:1, and the polymer modifier is carboxymethyl cellulose. The surface layer is coated with a layer of penetrating waterproof curing fluid - the waterproof curing fluid is a commercially available acrylic organic elastic paint.

Embodiment 3

[0037] A fiber-reinforced polymer modified anti-cracking mortar, its components and content (weight) are: 1 part of anti-cracking rubber powder, 2.3 parts of cement, 11 parts of sand, and 2.5 parts of water; wherein: the composition of anti-cracking rubber powder Parts and content (weight): 49% of inorganic mineral powder, 2% of alkali-resistant fiber, 29% of volume stabilizer, and 20% of polymer modifier. The cement used is 42.5 ordinary Portland cement, the alkali-resistant fiber is polypropylene fiber, the volume stabilizer is composed of expansion agent and anionic air-entraining agent according to the weight ratio of 5000:1, and the polymer modifier is composed of carboxymethyl Base cellulose and carboxypropyl cellulose are according to the weight ratio 1: 1, and the surface layer is coated with a layer of infiltration type waterproof curing solution——the waterproof curing solution is a commercially available acrylic organic elastic coating.

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Abstract

The invention provides a fiber-reinforced polymer modified crack resistant mortar, which is prepared by coating resilient water-proof maintenance liquid onto a mortar layer comprising cement, sand, inorganic ore powder, alkali resistant fiber, volume stabilizing agent, polymer modifier, the maintenance liquid penetrates into the capillary openings of the mortar layer, thus forming new crack resisting layer.

Description

1. Technical field [0001] The invention belongs to the special anti-crack mortar for building thermal insulation walls, in particular to a fiber-reinforced polymer modified anti-crack mortar. 2. Background technology [0002] With the innovation of national wall materials and the deepening of the promotion and application of energy-saving buildings, many defects exposed by traditional mortar, such as wall leakage, ventilation, peeling and other problems caused by wall hollowing, cracking, falling off, etc., It is becoming more and more prominent in construction engineering, which seriously affects the quality of the project and normal use, and also restricts the popularization and application of thermal insulation materials. A large amount of data shows that the main reasons for these problems, in addition to the structural cracks caused by uneven settlement of the foundation, can be summarized as the following two aspects: one is the high water absorption rate of the wall m...

Claims

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Application Information

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IPC IPC(8): C04B14/44C04B16/06C04B18/24C04B28/02
CPCY02W30/91
Inventor 张志峰马保国钟开红周强
Owner 奥捷科技股份有限公司
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