长江科学院院报2017，Vol.34Issue(6)：143-148,6.DOI:10.11988/ckyyb.20160276
土石坝沥青混凝土心墙材料配合比试验研究
Experimental Research on Mix Proportion of Asphaltic Concrete Core Material in Earth-rock Dams
闫小虎 1姚新华 2王晓军 3杨华全4
作者信息
- 1. 长江科学院材料与结构研究所,武汉430010
- 2. 长江科学院水利部水工程安全与病害防治工程技术研究中心,武汉430010
- 3. 河海大学水利水电学院,南京210098
- 4. 新疆奴尔水利枢纽工程建设管理局,新疆和田848000
- 折叠
摘要
Abstract
In impervious structures such as hydraulic asphaltic concrete,alkaline aggregate is generally considered to be of good adhesion resulted from the chemisorption between alkaline aggregate and surface active materials of asphalt;while acidic aggregate could lead to structural damage as asphalt film is easily replaced by water and detached from aggregate under long-term water immersion because the physical adsorption could not guarantee the adhesion and durability of asphalt.By using artificial limestone and natural gravel aggregates,laboratory tests were conducted to research the mix proportion of hydraulic asphalt concrete for Nuer water control project in Xinjiang,which has rich natural acidic gravel aggregate near the dam site but no alkaline aggregate nearby.Optimization of mix proportion is proposed as follows:gradation index r=0.40,filler content F =12％,asphalt content B =6.9％ for concrete with artificial limestone aggregates,and B =6.0％ for concrete with natural gravel aggregates.关键词
土石坝/沥青混凝土心墙坝/混凝土配合比/奴尔水利枢纽/天然砂砾石料Key words
earth-rock dam/dam with asphaltic concrete core/concrete mix proportion/Nuer water control project/natural gravel aggregate分类
建筑与水利引用本文复制引用
闫小虎,姚新华,王晓军,杨华全..土石坝沥青混凝土心墙材料配合比试验研究[J].长江科学院院报,2017,34(6):143-148,6.
