Fibre-reinforced anti-crack mortar dry powder

Abstract

The invention provides a fiber mortar dried powder material for strengthening the anti-crack, which comprises functionality the materials of cement, sand, silicon aluminum hollow spheroid, alkali proof fiber, mineral contraction inhibitor, cement hydration regulation agent, modifier and so on. Wherein, the cement hydration regulation agent comprises cement hydration slow hardening components and molding moisture and negative setup components. The mortar dried powder material for strengthening the anti-crack is able to be used through adding water to solve the problem of inaccurate calculationand material wasting of the traditional method owing to the preparation of the material in the scene. The prepared mortar solves the problem of crack owing to the stress of the ordinary mortar. The invention has the advantages of molding moisture, slow hardening, waterproof and easy construction, which is mainly used as the anti-crack mortar for the construction of heat preservation and heat insulation wall and also other construction walls.

Description

1. Technical field [0001] The invention belongs to special anti-crack mortar for building thermal insulation walls, in particular to a dry powder material of fiber-reinforced 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...

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.

[0003] Various anti-crack measures are considered in the design of the existing anti-crack mortar, mainly for polymer modification to improve flexibility, adding reinforcement materials to enhance its anti-crack function and alkali-resistant grid cloth to disperse stress, etc., but this operation It directly leads to a great increase in the cost of anti-cracking mortar (the cost of polymer alone reaches more than 3 / 4 of the cost of the entire mortar), and the construction process is complicated, which is not conducive to the promotion and use of materials