Construction method for reconstructing old concrete pavement by paving asphalt-concrete surface layer

Abstract

The invention relates to pavement reconstruction, in particular to a construction method for reconstructing an old concrete pavement by paving an asphalt-concrete surface layer, which is characterized by comprising the following: 1) a step of old concrete pavement processing, which comprises breaking and removing damages blocks and pouring again, mudjacking the old concrete pavement, impacting and rolling old concrete pavement, crack pouring and replacing hardened verges; and 2) a step of paving a asphalt-concrete pavement, which comprises spraying a prime coat and viscous oil and spreading the asphalt-concrete pavement. The breaking and removing damages blocks and pouring again comprise: breaking and removing seriously damaged blocks of the old pavement; shoveling loose parts of an old cement stabilized base away, and pouring concrete in a 15-centimeter thickness which is the same as that of the old base for leveling; filling up the pits on the base with cement mortar and tamping the filled cement mortar; and pouring a 24-centimeter C35 concrete pavement board. In the method, the requirements on cost, quality, construction period, environmental protection and the like are met when the old concrete pavement is reconstruction by paving the asphalt-concrete pavement.

Description

technical field [0001] The invention relates to pavement construction, in particular to a construction method for retrofitting old cement concrete pavement and paving asphalt concrete surface. Background technique [0002] There are a large number of old cement concrete pavements in our country. As the traffic volume increases year by year, many pavements have broken boards, resulting in mud pumping, potholes, staggered platforms, and arching. The maintenance rate is relatively high, which seriously affects driving. The comfort, the speed is difficult to increase, and the traffic capacity is reduced, which affects the local economic development. [0003] The construction technology of adding asphalt concrete surface layer to the old cement concrete pavement is a matter of recent years. Because the road surfaces involved are different, it is difficult to guarantee the quality of some road surface construction by using the same method. Therefore, in most cases, corresponding ...

AI Technical Summary

Problems solved by technology

Compared with our scheme, the above technical schemes have certain limitations. Firstly, the project cost is high and the construction period is long; secondly, the quality of the project is difficult to guarantee; thirdly, it cannot meet the relevant requirements of environmental protection.

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