废旧轮胎橡胶粉对透水混凝土性能的影响研究

关键字：废旧轮胎,橡胶粉,透水,混凝土,性能,影响

（重庆绿恒环保科技有限公司，重庆  400000）

    摘要：研究了80目废旧轮胎橡胶粉对透水混凝土透水性能、力学性能、耐磨性能的影响。结果表明：80目橡胶粉促使透水混凝土的水胶比增大，孔隙率、透水系数下降，28 d抗压强度、抗折强度、弹性模量、抗冲击能先增加后降低，磨坑长度先降低后增加。当橡胶粉掺量为4%~6%时，透水混凝土28 d抗压、抗折强度分别提高18%、20%，28 d弹性模量、磨坑长度分别下降11.7%、6.7%；28 d抗冲击能提高近3倍。
    关键词：废旧轮胎橡胶粉；透水混凝土；性能研究
    中图分类号：TU528.2        文献标识码：A        文章编号：1001-702X（2017）12-0041-04

Research on effect of waste tire rubber powder on properties of porous concrete
XIE Qian，ZHOU Shune，LI Qi，RAN Guangjian，XIAO Xin
 （Chongqing Lvheng Eco-Technology Co.Ltd.，Chongqing 400000，China）

    Abstract：The influence of 80 mesh waste tire rubber powder on porous properties，mechanical properties，grinding properties of porous concrete were researched in this paper. Results show that the water/cement ratio gradually increased，porosity and permeation coefficient gradually decreased，and 28 d compressive strength，flexural strength，elastic modulus and shock resistance performance increase first and then reduce，28 d grinding hole length reduce first and then increase. The 28 d compressive strength and flexural strength increased 18%、20%，28 d elastic modulus and shock resistance decreased 11.7%、6.7% respectively，28 d shock resistance increased 3 times，when the range of 80 mesh waste tire rubber powder dosage is 4%~6% in porous concrete.
    Key words：waste tire rubber powder，porous concrete，properties research