期刊论文

中文

中国建材科技

1003-8965

2017

26

6

47-50

10.3969/j.issn.1003-8965.2017.06.021

武汉轻工大学校立科研项目（2016y24）；

本校为第一机构

采用非接触法研究废旧轮胎橡胶粉的掺量（10kg/m^3,20kg/m^3,30kg/m^3）和粒径（20~40目、60~80目、100~120目）对混凝土自收缩性能的影响,结果表明自收缩主要发生在初凝后的30 h内,随着掺量的增加,混凝土的自收缩明显减少,随着橡胶粉粒径变细,胶粉粒子增多,其自收缩反而有所增大。从降低混凝土自收缩的角度出发,结合橡胶粉对抗压强度和坍落度的影响,得出掺量为20 kg/m^3,粒径为20~40目的橡胶混凝土,混凝土综合性能较优。

Non-contact method was used to investigate the influence of scrap rubber particals content and size on the autogenous shrinkage performance of concrete in this paper. The content of rubber particals was 10 kg/m^3, 20 kg/m^3 and 30 kg/m^3,the size was from 20 to 40 mesh number, 60 to 80 mesh number and 100 to 120 mesh number, respectively.Results showed that autogenous shrinkage of concrete was mainly happened in 30 h after initial setting. Autogenous shrinkage of concrete was obviously reduced with the more content of rubber particals,on the contrary, autogenous shrinkage was increased with th...