Tough road surface base layer material solidifying agent and preparation method thereof

Abstract

The invention relates to a tough road surface base layer material solidifying agent and a preparation method thereof. The tough road surface base layer material solidifying agent is characterized by being formed by mixing the following components in percentage by weight: 5 to 40 percent of polymer emulsion, 2 to 20 percent of viscosity increaser, 1 to 30 percent of inorganic adhesive, 0.1 to 5 percent of auxiliary agent and 5 to 91.9 percent of water; the polymer emulsion is one or mixture of phenyl propyl emulsion and polyacrylic acid emulsion; the viscosity increaser is one of emulsified petroleum resin, emulsified asphalt and asphalt resin extract emulsion and one or mixture of emulsified abietic resin and acrylate; the inorganic adhesive is water-soluble silicate; and the auxiliary agent is one or two of preservative, wetting and dispersing agent and defoaming agent. The tough road surface base layer material solidifying agent used in the construction of a tough road surface base layer has the advantages of high solidifying strength, good water stability and low cost.

Description

technical field [0001] The invention relates to a consolidating agent for strengthening and consolidating road tough pavement base materials and a preparation method thereof. Background technique [0002] At present, more than 90% of my country's highway pavement structure is semi-rigid base. Compared with the flexible base, the semi-rigid base has higher base strength and better performance of bearing and spreading loads. But there are following problems: [0003] (1) The tensile capacity is relatively small, the deformation capacity is small, and the brittleness is high. Under the action of temperature changes, traffic loads and humidity changes, cracks are prone to occur; [0004] (2) The pavement of the semi-rigid base will produce a lot of dry shrinkage and temperature shrinkage cracks during the construction of the base, and these cracks are easy to reflect and cause road damage; [0005] (3) The strength of the semi-rigid base layer is relatively large in the later...

AI Technical Summary

Problems solved by technology

[0003] (1) The tensile capacity is relatively small, the deformation capacity is small, and the brittleness is high. Under the action of temperature changes, traffic loads and humidity changes, cracks are prone to occur;

[0004] (2) The pavement of the semi-rigid base will produce a lot of dry shrinkage and temperature shrinkage cracks during the construction of the base, and these cracks are easy to reflect and cause road damage;

[0006] (4) Poor fatigue resistance

[0008] (6) The semi-rigid base layer has no healing ability after cracking, so once the base layer is damaged, there is no other way but to dig out and rebuild, which will bring huge costs and difficulties to maintenance;

[0009] (7) The semi-rigid base is difficult to construct across the year. Whether it is directly exposed or paved with a layer of asphalt surface for winter, the occurrence of transverse shrinkage cracks perpendicular to the driving direction cannot be avoided, thus burying hidden dangers for the asphalt pavement; the semi-rigid base freezes Thaw damage is almost inevitable in seasonally frozen regions

Images