碾压式沥青混凝土防渗心墙施工模拟试验

Simulation experiment on construction of an earth-rock fill dam with asphaltic concrete core

新疆某碾压式沥青混凝土心墙土石坝所处地区属于亚热带大陆性气候,夏季高温干旱,冬季严寒,昼夜温差大。为克服地区环境不利因素,根据室内试验数据,进行了沥青混凝土的室外碾压试验,确定了生产性施工技术指标,同时验证了其配合比的实用性,以保证施工质量和施工进度。

An earth-rock fill dam with asphaltic concrete core is located in an area of the subtropical continental climate with high temperature and drought in summer, severe cold in winter and large temperature difference between day and night. In order to overcome the local unfavorable environmental factors, an outdoor experiment on the compaction of the asphaltic concrete is made in accordance with the indoor test data concerned; from which not only the technical indexes for the actual construction are determined, but the feasibility of the mixing ratio of the concrete is also examined, so as to ensure the eonstruction quality and construction progress.