摘要
将不同钢粒掺量(0、5%、10%、20%)和1.2 kg/m^3聚丙烯纤维掺入再生骨料取代率为100%的再生混凝土中,研究其工作性和力学性能。结果表明,钢粒可以有效改善聚丙烯纤维再生混凝土的流动性,且对其保水性能影响较小;不同钢粒掺量会引起聚丙烯纤维再生混凝土抗压强度波动,随着钢粒掺量的增加其劈拉强度有一定降低,较优的钢粒掺量为5%。
To study the working performance and mechanical properties of recycled concrete with 100% replacement rate of recycled aggregate, different steel content(0, 5%, 10%, 20%) and 1.2 kg/m^3 polypropylene fiber were mixed into recycled concrete. The results show that the fluidity of polypropylene fiber recycled concrete can be effectively improved by adding steel particles, and there is a little influence on water retention property of concrete. The different content of steel particles causes the fluctuation of compressive strength of polypropylene fiber recycled concrete, and the splitting tensile strength of concrete is reduced to a certain extent with the increase of steel particles and the better steel particles content of polypropylene recycled concrete is 5%.
作者
王兵
朱平华
许飞
吴书安
WANG Bing;ZHU Ping-hua;XU Fei;WU Shu-an
出处
《混凝土与水泥制品》
北大核心
2019年第4期97-100,共4页
China Concrete and Cement Products
基金
住房和城乡建设部科学技术项目(2017-K4-005
2017-K7-002)
扬州市科技计划项目(YZ2018145)
关键词
钢粒
聚丙烯纤维再生混凝土
坍落度
泌水率
抗压强度
劈裂抗拉强度
Steel particles
Polypropylene fiber recycled concrete
Slump
bleeding rate
Compressive strength
Splitting tensile strength
