Cement concrete additive for fast rehabilitating cement concrete road

Abstract

The invention discloses a formula of a cement concrete additive for fast rehabilitating a cement concrete road. The formula comprises the following raw materials in parts by weight: 12-18 parts of bentonite, 20-23 parts of silicon powder, 0.5-2.5 parts of stearic acid, 2.5-6.5 parts of methylcellulose, 20-25 parts of inorganic matrix material, 13-17 parts of early strength agent, 22-28 parts of water reducing agent, 0.1-10.5 parts of thickening time control agent, 0.2-3.5 parts of corrosion inhibitor, 40-55 parts of slag, 22-27 parts of methacrylic acid, 13-19 parts of polyethylene glycol monoether acrylate monomer, 12-17 parts of sodium allysulfonate, 2.5-4.0 parts of polyether acrylate monomer, 21-24 parts of ferrous sulfate, 13-19 parts of industrial salt, 1.5-3.5 parts of coal ash, 2.5-4.0 parts of calcium carbonate powder, 3.5-5.5 parts of polyacrylamide and 2.0-3.5 parts of lauryl sodium sulfate. The formula of the cement concrete additive for fast rehabilitating the cement concrete road has the characters that cement concrete road maintenance operation time can be greatly shortened, hardening time and solidification time is adjustable, the applicable temperature range is wide, the admixture amount is low, and the like.

Description

technical field [0001] The invention relates to a cement concrete admixture for quickly repairing cement concrete roads, belonging to the technical field of concrete. Background technique [0002] In the repair of cement concrete pavement cracks, the commonly used method is to remove the damaged concrete and spread ordinary concrete with the same strength as the original pavement concrete. At present, there are many kinds of concrete admixtures available on the market, and there are some defects in actual use: First, although the water-reducing effect is good, the bleeding rate increases, which affects its quality uniformity; second, it has poor adaptability to cement varieties, It is easy to cause the problem of early setting of concrete, which affects the normal construction of the project, but ordinary concrete needs a long curing time (the standard natural curing takes 28 days to reach the design strength), which brings difficulties to the pavement to restore traffic as ...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of concrete admixtures available on the market, and there are some defects in actual use: First, although the water-reducing effect is good, the bleeding rate increases, which affects its quality uniformity; second, it has poor adaptability to cement varieties, It is easy to cause the problem of early setting of concrete, which affects the normal construction of the project, but ordinary concrete needs a long curing time (the standard natural curing takes 28 days to reach the design strength), which brings difficulties to the pavement to restore traffic as soon as possible. Therefore, we propose A cement concrete admixture for quickly repairing cement concrete roads