水利水电科技进展2017，Vol.37Issue(4)：59-62,4.DOI:10.3880/j.issn.1006-7647.2017.03.011
水泥填料对心墙沥青混凝土长期水稳定性的影响
Influence of cement filler on long-term water stability of core wall asphalt concrete
摘要
Abstract
Based on the optimized mixture ratio of core wall asphalt concrete, asphalt concrete specimens were prepared using 12% limestone powder, 6% cement and 6% limestone powder, and 12% cement, respectively. The effect of cement fillers on long-term water stability of core wall asphalt concrete with the natural gravel aggregate was studied. The results show that the water stability coefficient of the specimen with 12% limestone powder decreases with the increase of the immersion time, and the water stability coefficient decreases to 0. 88 when the immersion time is 75 h, indicating that it does not meet the requirement that the water stability coefficient of core wall asphalt concrete be greater than or equal to 0. 90. The water stability coefficients of the specimens with 12% cement or 6% cement and 6% limestone powder first increase and then decrease with the increase of the immersion time, and reach their maximum values of 1. 02 and 0. 98, respectively, when the immersion time is 375 h. The water stability factor can still meet the specification requirements when the immersion time is 1500 h. It can effectively improve the long-term water stability of core wall asphalt concrete to use cement to replace limestone powder.关键词
水泥填料/心墙/沥青混凝土/水稳定系数/长期水稳定性Key words
cement filler/core wall/asphalt concrete/coefficient of water stability/long-term water stability分类
建筑与水利引用本文复制引用
何建新,杨武,杨耀辉,游光明..水泥填料对心墙沥青混凝土长期水稳定性的影响[J].水利水电科技进展,2017,37(4):59-62,4.基金项目
新疆维吾尔自治区高校科研计划(XJEDU2014I016) （XJEDU2014I016）
