Improved concrete anti-cracking modifier

Abstract

The invention discloses an improved concrete anti-cracking modifier, which is made by the following raw materials in parts by weight: 1.2-2.8 parts of organic amine lignin, 1.3-3.3 parts of calcium hydroxide, 5-8 parts of polyamide epichlorohydrin resin, 2.5-3.6 parts of acetyl trioctyl citrate, 1.3-1.9 parts of sodium lactate, 3.2-3.8 parts of cellulose acetate butyrate, 1.5-3 parts of 3-aminopropyltrimethoxysilane and 1.8-3.6 parts of phenethyl isopropyl phenylphenol polyethenoxy ether. The anti-cracking performance of the concrete is improved, the viscosity of the concrete is increased, the inner pore structure of the concrete is greatly improved, the degree of compaction of the concrete is greatly increased and the pore water storage in the concrete structure is reduced, thereby preventing the concrete structure from being cracked and broken due to icing and expanding of water in the pores, improving the durability of the concrete, prolonging the service life of the concrete, and reducing the maintenance cost.

Description

technical field [0001] The invention relates to an improved concrete anti-crack modifier, which belongs to the field of building materials. Background technique [0002] In the cold and salinized areas of northern my country, the freezing damage of concrete buildings (such as cracks and spalling) and ion erosion are serious, which may lead to a series of diseases such as leakage and cracking of concrete projects, reducing its durability. and security. Therefore, it is one of the main factors to improve the durability of concrete to reinforce the damaged concrete. The strength level of ordinary concrete is low. To enhance the impermeability and frost resistance of concrete will inevitably increase the strength level of concrete, increase its construction cost, and reduce its coordination with the surrounding medium. Now, the way to improve the durability of concrete (especially frost resistance and impermeability) is to increase the compactness of concrete and use polymer mo...

AI Technical Summary

Problems solved by technology

The strength level of ordinary concrete is low. To enhance the impermeability and frost resistance of concrete will inevitably increase the strength level of concrete, increase its construction cost, and reduce its coordination with the surrounding medium.

Now, the method to improve the durability of concrete (especially frost resistance and impermeability) is to increase the compactness of concrete and use polymer mortar, but these measures can only improve the reduction of pores greater than 400nm inside the concrete, while its small However, the number of holes increases, and the durability of concrete does not improve significantly