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: 2.5-4.5 parts of polypropylene fiber, 1.5-2.3 parts of sodium abietate, 2.5-3.3 parts of sodium dodecyl sulfate, 3-7 parts of quartz sand, 7-12 parts of glycerol, 0.5-1.3 parts of citric acid, 1.2-2.7 parts of dodecyl dimethyl benzyl ammonium chloride and 3.2-4.7 parts of pimaric acid soap. Compared with the existing modifier, the dodecyl dimethyl benzyl ammonium chloride can improve the mechanical properties of the concrete such as compression resistance, breaking resistance and adhesivity of concrete under the co-existing of the glycerol, the polypropylene fiber and the citric acid, and increase the compactness, chemical stability, wear resistance and freeze resistance of products, so that the improved concrete modifier can be widely applied to floor materials, paving materials, water-proof materials, adhesive materials, joint and repair materials, antiseptic and liner materials and surface covering materials.

Description

technical field [0001] The invention relates to an improved cement anti-crack modifier, which belongs to the field of building materials. Background technique [0002] Ordinary cement concrete or mortar has essential deficiencies such as low tensile strength, easy cracking, poor water resistance, low cohesive force, poor chemical resistance, no wear resistance, and no crack resistance. Over the years, people have tried various modification methods. Usually, the method of adding polymers to cement is used. In recent years, latex and esters have been used more often. Because styrene-butadiene rubber is more excellent in water resistance, heat resistance, impact resistance and deformation resistance than other types of polymer aqueous dispersions. Therefore, the application is more extensive. However, general styrene-butadiene latex is easily demulsified due to the destruction of calcium and magnesium in cement when it is mixed with cement, and cannot form a continuous and un...

AI Technical Summary

Problems solved by technology

However, general styrene-butadiene latex is easily demulsified due to the destruction of calcium and magnesium in cement when it is mixed with cement, and cannot form a continuous and uniform film, which is difficult to play a good role, and some components in the latex will also Hinder the hydration reaction of cement and affect the construction