Concrete crack resistance modifier

Abstract

The invention discloses a concrete crack resistance modifier, which is prepared by the following raw materials by weight: 1.2-2.8 parts of polyethylene silicone oil, 1.3-3.3 parts of surfactant JFC, 5-8 parts of polyamide chloropropylene oxide resin, 2.5-3.6 parts of triethyl acetocitrate, 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 pesticide emulsifier 700-2. The invention enhances crack resistance performance of concrete and increases viscosity of concrete; the invention greatly improves aperture structure in concrete, thereby substantially enhancing packing of concrete, and reducing water storage of aperture in the concrete structure, and avoiding concrete structure destroy caused by crack due to icing expansion of old water in the aperture, and increasing concrete endurance, prolonging service life of concrete, and reducing maintenance cost.

Description

technical field [0001] The invention relates to a 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 mortar, but ...

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