再生混凝土收缩与徐变性能研究  

Advance in Study of Shrinkage and Creep Properties of Recycled Concrete

作　　者：戴劲[1] 唐亮[1] 宋卫民[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《粉煤灰》2013年第3期24-27,共4页Coal Ash China

摘　　要：介绍了混凝土收缩和徐变的机理。从集料掺量和品质、水灰比、掺合料、研究方法等方面总结分析了国内外在再生混凝土收缩徐变研究方面取得的进展。已有的研究结果表明:再生混凝土的收缩和徐变性能与再生集料掺量、水灰比、掺合料、集料破碎工艺以及研究方法有关。最后结合环境保护和可持续发展战略,提出了再生混凝土技术开发需要进一步研究的问题,对今后的发展方向提出了展望。A brief introduction of mechanism of shrinkage and creep of concrete was made. The advance in foreign and domestic study of shrinkage and creep of recycled concrete was summarized and analyzed from aspects of amount and quality of aggregates, the ratio W/C, chemical and mineral admixtures and research methods. Research results showed that shrinkage and creep properties of recycled concrete related to the volume and quality of aggregates, the ratio W/C, chemical and mineral admixtures and research methods. At last, some suggestions on further studies of recycled aggregate concrete are recommended based on the ideology of environment protection and the policy of sustainable development in construction industry. Future development tendency prospected.

关 键 词：再生混凝土 收缩 徐变 机理 综述 

分 类 号：X799.1[环境科学与工程—环境工程]