Construction method of continuous three layer pavement of bottom base layer, lower base layer and upper base layer of cement stabilized macadam

Abstract

The invention discloses a construction method of the continuous three layer pavement of a bottom base layer, a lower base layer and an upper base layer of cement stabilized macadam. The method comprises the steps of construction lofting; mixed material mixing and transportation; pavement and rolling; and joint connection treatment, wherein in the pavement and rolling step, two pavement machines take place in parallel, a lower supporting layer is wetted by sprinkling water and waterlogging is avoided, and the pavement of the bottom base layer of the cement stabilized macadam is carried out; when the first pavement machine carrying out the pavement by a distance of 5-10 meters, the second pavement machine begins carrying out the pavement, and always keeps the distance of 5-10 meters with the first pavement machine in a pavement process, and the rolling is instantly carried out after pavement and finishing; when a construction section of 200 meters is finished after the pavement and the rolling of the bottom base layer, the pavement of the lower base layer is carried out, and the rolling is instantly carried out after the pavement and finishing; after a construction section of 190 meters is finished after the pavement of the lower base layer, the pavement of the upper base layer is carried out, the lower base layer is constructed under the control of the pavement and rolling, and a construction section of 180 meters is carried out after the pavement of the upper base layer. According to the construction method, the working period is greatly shortened, and the caking property of the integrated structure is high; meanwhile, the maintenance cost of the two layers is saved, and the maintenance is relatively simple.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a construction method of a cement-stabilized macadam base for expressways, and more particularly relates to a construction method for three-layer continuous laying of a cement-stabilized macadam base, a lower base and an upper base. Background technique [0002] With the acceleration of highway construction in our country, in order to improve economic benefits, more and more construction projects are carried out in the rainy season. However, during the construction process in the rainy season, it is very easy to have quality hazards, which not only cause serious defects in the appearance of the road surface, but also cause damage to the roadbed when the rain is strong, and spend a lot of maintenance costs during the road operation period. Enterprises bring huge economic losses. For construction during the rainy season, most construction companies still have no good count...

AI Technical Summary

Problems solved by technology

However, during the construction process in the rainy season, it is very easy to have quality hazards, which not only cause serious defects in the appearance of the road surface, but also cause damage to the roadbed when the rain is strong, and spend a lot of maintenance costs during the road operation period. huge economic losses

For construction during the rainy season, most construction companies still have no good countermeasures except passively avoiding construction in rainy days and doing a good job of drainage

On the other hand, the traditional construction technology usually adopts the method of cement stabilizing the subbase, spreading and curing the base, and then paving and maintaining the construction. Not only the construction efficiency is low, the construction period is long, and the maintenance is more complicated. Invest a lot of manpower and material resources in maintenance