Concrete impact-resistant modifier

Abstract

A disclosed concrete impact-resistant modifier is prepared from the following raw materials in parts by weight: 1.5-4.7 parts of tribasic lead sulfate, 2.5-4.5 parts of cellulose acetate, 1.2-3.3 parts of rosin-polythylene oxide ester, 1.2-1.9 parts of sodium methyl silicate, 1-3 parts of sodium poly(methylidyne naphthalenesulfonate), 2-3.5 parts of artificial ceramic particle, 0.5-1.3 parts of zinc hydroxide, and 5-10 parts of deionized water. Through the combined effect of the two flexible materials tribasic lead sulfate and cellulose acetate, the concrete possesses high compression resistance, high bending-resistant strength and high impact-resistance flexibility, the elastic modulus of concrete is effectively reduced, the damping ratio of concrete is improved, possibility is provided for vibration damping and noise reduction of concrete pavements, durability of flexible concrete is improved, and the service life of the structure is prolonged.

Description

technical field [0001] The invention relates to a concrete impact modifier, which belongs to the field of building materials. Background technique [0002] With the rapid development of my country's economy, the traffic volume of roads has increased, and the proportion of heavy transport vehicles has increased, which puts forward higher requirements for the structural strength and performance of road pavement. Although the cement concrete pavement meets this demand due to its advantages of high compressive strength, high bending and tensile strength, good temperature stability, and long service life, it also has poor crack resistance, poor impact resistance, easy cracking and driving problems. Poor stability, high noise and other shortcomings. At present, fiber is often mixed into cement concrete to improve its crack resistance and impact resistance, so as to solve the cracking problem of cement concrete pavement. In recent years, steel fiber reinforced concrete has been w...

AI Technical Summary

Problems solved by technology

However, if all the steel fibers are added to the concrete, it will not only greatly increase the cost of the project, but also have the disadvantages of serious corrosion of the steel fibers and short service life of the road surface during use.

Polypropylene fiber has a unique effect on reducing the early plastic shrinkage and drying shrinkage of concrete. Although polypropylene fiber has a certain effect on improving the crack resistance of the road surface, it is not obvious enough to improve the bending resistance of the road surface.