Road construction method for solving problem of pavement cavity beneath slab

Abstract

The invention discloses a road construction method for solving the problem of pavement cavity beneath slab. The road construction method comprises the following steps that during construction, a first pump pumps accumulated water in a cavity beneath slab area and partial water in a soil base layer through a first metal pipe, then a second pump sends hot air into the cavity beneath slab area and the soil base layer through a second metal pipe, the hot air can dry the cavity beneath slab area and the soil base layer when flowing in the cavity beneath slab area and the soil base layer; and the hot air flows in the soil base layer, water in the soil base layer can be taken away, then the hot air is pumped by the first pump through the first metal pipe, in this way, quick water draining can be conducted on the cavity beneath slab area and the soil base layer through the hot air, after water draining, the strength of the soil base layer below the cavity beneath slab area is increased, then grouting is conducted on the cavity beneath slab area, after grouting, the soil base layer below the cavity beneath slab area is not prone to being sunken, and the fact that cavity beneath slab occurs again in the cavity beneath slab area can be avoided.

Description

technical field [0001] The invention relates to a road construction method for solving the problem of voiding at the bottom of the road slab. Background technique [0002] The void at the bottom of the road slab is a common pavement defect at present. If it is not treated in time, it will cause serious problems such as pavement fracture and subsidence. At present, the void at the bottom of the road slab is generally treated by the grouting method, that is to say When grouting into the void area, the grout will fill the void area. After the grout solidifies, it can support the road surface to prevent the road surface from breaking and collapsing. However, because there is generally water in the void area, the accumulated water seeps into the The soil base below the void area softens the soil base below the void area. In this way, after grouting the void area, the support strength of the soil base below the void area is low, and the soil base is still prone to sag. The area i...

AI Technical Summary

Problems solved by technology

[0002] The void at the bottom of the road slab is a common pavement defect at present. If it is not treated in time, it will cause serious problems such as pavement fracture and subsidence. At present, the void at the bottom of the road slab is generally treated by the grouting method, that is to say When grouting into the void area, the grout will fill the void area. After the grout solidifies, it can support the road surface to prevent the road surface from breaking and collapsing. However, because there is generally water in the void area, the accumulated water seeps into the The soil base below the void area softens the soil base below the void area. In this way, after grouting the void area, the support strength of the soil base below the void area is low, and the soil base is still prone to sag. The area is still prone to voiding problems again

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