Concrete crack resistance modifier

Abstract

The invention discloses a concrete crack resistance modifier, which is prepared by the following raw materials by weight: 2.5-3.7 parts of aluminium sulfide, 1.3-2.6 parts of magnesium oxide, 0.5-1.6 parts of naphthalene water reducer, 2.3-4.6 parts of gum acacia, 2.5-4.5 parts of chlorosulfonated polyethylene, 1.2-1.8 parts of ammonium thiosulphate, 1.6-5.8 parts of carboxylated styrene-butadiene latex and 1.2-3 parts of ethylene propylene terpolymer. Compared with the prior concrete modifier, the product has the advantages of high surface toughness, low brittleness and improved low-temperature stability; the produced concrete has the advantages of decreased heat conduction coefficient, reduced heat absorption value, improved thermal resistance and cold resistance, reduced temperature sensitivity, improved high and low-temperature stability, thereby improving crack resistance performance of the concrete pavement road, increasing usage time limit of the pavement, and reducing maintenance cost.

Description

technical field [0001] The invention relates to a crack-resistant modifier for concrete, which belongs to the field of building materials. Background technique [0002] In recent years, the asphalt road business has developed rapidly, but there are generally problems in technology and quality of asphalt pavement, which are mainly reflected in the durability of road engineering and the early damage of the road surface, especially in some bad weather conditions and heavy traffic loads. Therefore, higher requirements are placed on the performance of asphalt concrete. Usually, asphalt concrete is obtained by compacting a homogeneous mixture of heated asphalt, coarse and fine aggregates, and filling materials (mineral powder, cement, etc.) in an appropriate mixing ratio. Generally, the temperature stability of asphalt concrete is the main factor affecting the durability of the road, and the water stability of asphalt concrete is the main factor affecting the early failure of the...

AI Technical Summary

Problems solved by technology

Generally, the temperature stability of asphalt concrete is the main factor affecting the durability of the road, and the water stability of asphalt concrete is the main factor affecting the early failure of the asphalt pavement. A large number of cracks, pits, spalling, aggregate falling off, and even structural damage, had to be repaired or maintained, resulting in a great waste of resources and economic losses