摘要
为了解微膨胀剂对再生混凝土的干缩影响,在研究再生粗骨料的基本特性基础上对4组膨胀剂再生混凝土进行干缩性能试验,研究结果表明：再生骨料的天然干缩性较大,约为同等级普通混凝土的1.1-1.3倍干缩量,在再生混凝土中掺入膨胀剂能够有效减少再生混凝土的收缩变形。
In order to understand the micro influence on the dry shrinkage of the recycled concrete expansive agent, based on the research based on the basic properties of recycled coarse aggregate on four groups of recycled concrete expansion agent and drying shrinkage performance test, the results show that the natural drying shrinkage of recycled aggregates is bigger, about the same grade 1.1 - 1.3 times that of the normal concrete dry drop - off in recycled concrete mixed with expansive agent can effectively reduce the recycled concrete＇s shrinkage deformation.
出处
《四川建材》
2015年第2期7-7,9,共2页
Sichuan Building Materials
基金
宿迁学院大学生实践创新训练项目
关键词
再生混凝土
微膨胀
干缩试验
recycled concrete
micro expansion
drying shrinkage test
