低温条件下浇筑式沥青混凝土防渗心墙施工

Cast-in-situ Asphalt Concrete Cutoff Wall Constructed Under Low Temperature

肯斯瓦特水利枢纽工程初冬开始截流和填筑堰体,由于受到低温的影响选择采用浇筑式沥青混凝土心墙作为堰体防渗结构。浇筑式沥青混凝土是新建土石坝和病险坝修补的一种有效的防渗结构。针对沥青混凝土原材料的性能特性,总结了浇筑式沥青混凝土防渗层施工方法,并结合工程实例对施工方法进行了详细的介绍。

Abstract ： River closure and cofferdam embankment operation of Kensiwate Project are performed early in winter. Because of low tempera ture, the impervious structure applies the castinsitu asphalt concrete wall, which is an effective one for newlybuilt earthrock fill dam construction and dam defect remedy. In this paper, construction method of the castinsitu asphalt concrete wall is summarized based on property of asphalt concrete. Meanwhile, the method is described in detail with engineering practice.