不同引发剂对应马来酸酐接枝改性橡胶混凝土力学性能影响研究  

Mechanical Property of Rubber Concrete Modified by MAH with Different Initiating Agents

作　　者：赵彦亮[1] 刘菲[1] 谭俊华[1] 朱开金[1] 梁玉蓉[1] 

机构地区：[1]太原工业学院材料工程系,太原030008

出　　处：《硅酸盐通报》2017年第1期168-172,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金面上项目(51273142);山西省重点扶持学科材料科学与工程基金项目

摘　　要：引入不同引发剂对马来酸酐接枝改性废旧橡胶粉制备橡胶混凝土,对其坍落度、抗压强度、动弹性模量等性能进行研究,并通过SEM对其界面结合进行分析。试验结果表明,以DCP、BPO作为引发剂马来酸酐在橡胶表面均有接枝现象,但DCP效果明显,且接枝率最高。DCP作为引发剂对应改性橡胶混凝土28 d抗压强度明显优于另外两种改性剂,且橡胶最佳掺量为15%时,强度达到最大值45.1 MPa。DCP作为引发剂的改性橡胶混凝土中界面周围有很多针状和片状水泥水化物穿插嵌入橡胶,两物相界面结合牢固紧密,效果最佳。Properties of slump,compressive strength,dynamic modulus of elasticity, etc, of rubber concrete with waste rubber powder modified by MAH with different initiating agents,and analysis of the interface bonding with SEM. The results show that DCP,BPO as initiators were grafted on the rubber surface,but the effect of DCP was obvious,and the grafting rate was the highest. 28 d compressive strength of modified rubber concrete was better than the other two kinds of initiators. Maximum strength was 45. 1 MPa when the best radio was 15%. There were a lot of needle and flake cement hydrates embedded in the rubber around modified rubber concrete interface when DCP as initiator,tied the two phase interfaces,the best effect.

关 键 词：引发剂 马来酸酐 橡胶混凝土 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]