城市道路大修工程基层快速施工技术

Rapid construction technology for base course in urban road overhaul project

城市道路大修工程施工需及时恢复交通,而常规石灰粉煤灰基层、水泥稳定粒料基层、沥青冷再生基层施工均需养生。本文结合数年大修经验,以香山路大修工程为例,打破传统冷铺方法,根据水泥在温度较高环境下强度快速增长的特性,对摊铺掺加水泥的石灰粉煤灰基层后立即撒布封层并开放交通,次日再加铺沥青混凝土底面层的施工工艺进行探讨。

The construction of urban road overhaul project needs to restore traffic in time, while the conventional lime fly ash base, cement stabilized granular base and asphalt cold recycled base all need to be cured. Combined with experience,taking the overhaul project of Xiangshan Road as an example, this paper breaks the traditional cold paving method,and studies the construction technology of spreading the seal layer and opening the traffic immediately after paving the lime fly ash base mixed with cement and then paving the asphalt concrete bottom layer the next day, according to the characteristics of rapid growth of strength of cement in high temperature environment.