Early strength type semi-flexible pavement

Abstract

The invention discloses an early strength type semi-flexible pavement which is formed by piling up a cement-based grouting material. The cement-based grouting material comprises, by mass, 40-50 partsof slag, 15-20 parts of fly ash, 30-40 parts of water glass, 25-35 parts of silica fume, 2-5 parts of limestone mineral powder; 6-8 parts of graphene, 14-18 parts of epoxy resin, 6-8 parts of metakaolin, 2-5 parts of ethylenediamine tetraacetic acid, 8-10 parts of phthalic anhydride, 6-8 parts of trimethylolpropane, 3-5 parts of rubber powder, 3-5 parts of bauxite, 2-4 parts of iron oxide yellow,0.5-1 part of calcium hydroxide, 5-10 parts of modified plant fibers, 15-20 parts of glycerol and 10-20 parts of water, wherein the content of SiO2 in the silica fume is greater than or equal to 92wt.%. The early strength type semi-flexible pavement is formed by piling up the cement-based grouting material, the obtained semi-flexible pavement has good high-temperature rutting resistance, low-temperature cracking resistance, water damage resistance and fatigue resistance, and the service lifetime of the pavement can be prolonged.

Description

technical field [0001] The invention belongs to the field of pavement preparation, in particular to an early-strength semi-flexible pavement. Background technique [0002] Semi-flexible composite pavement is a new type of pavement that combines rigidity and flexibility. It is a pavement formed by pouring cement mortar that meets certain performance requirements into asphalt mixture with large voids. Therefore, it has the advantages of both traditional pavements. At present, the construction of semi-flexible pavement adopts on-site paving asphalt mixture, after being rolled and cooled to a certain temperature, the cement mortar mixed on site is poured into the asphalt mixture, and finally the surface is treated and maintained for a period of time After that it will be open to traffic. However, this kind of on-site construction method has the following problems: (1) cumbersome construction procedures lead to closed traffic for a long time; (2) on-site grouting and grouting ma...

AI Technical Summary

Problems solved by technology

However, this kind of on-site construction method has the following problems: (1) cumbersome construction procedures lead to closed traffic for a long time; (2) on-site grouting and grouting may cause environmental pollution; (3) weather changes may seriously affect the composite pavement performance, etc.