硅粉/废轮胎橡胶/混凝土复合材料的力学性能和耐久性  

Mechanical properties and durability of silica fume/waste tire rubber/concrete composites

作　　者：邢君[1] 郭永伟[2] 张郁芳[3] XING Jun;GUO Yong-wei;ZHANG Yu-fang(Taiyuan City Vocational College,Taiyuan 030027,China;Shanxi Polytechnic College,Taiyuan 030006,China;Taiyuan Institute of Architecture Design&Research,Taiyuan 030002,China)

机构地区：[1]太原城市职业技术学院,太原030027 [2]山西职业技术学院,太原030006 [3]太原市建筑设计研究院,太原030002

出　　处：《合成橡胶工业》2020年第5期407-413,共7页China Synthetic Rubber Industry

基　　金：山西省教育科学“十二五”规划课题(GH-15070)。

摘　　要：制备了不同水与水泥质量比、废轮胎橡胶和硅粉含量的硅粉/废轮胎橡胶/混凝土复合材料,并考察了复合材料的抗压强度、密度、透水性、静力弹性模量、动力弹性模量和氯化物扩散性能。结果表明,随着废轮胎橡胶用量的增加,复合材料的抗压强度、静力弹性模量和动力弹性模量下降,透水性增强。用硅粉代替部分水泥后,复合材料的透水性下降,氯离子扩散系数减小。橡胶颗粒与水泥基体之间存在间隙,二者界面黏结作用较弱,导致复合材料强度下降。Silica fume/waste tire rubber/concrete composites with different mass ratio of water/cement,waste tire rubber and silica fume content were prepared,and compressive strength,density,water permeability,static elastic modulus,dynamic elastic modulus and chloride diffusion properties of the composites were investigated.The results showed that with the increasing amount of waste tire rubber,the compressive strength,static elastic modulus and dynamic elastic modulus of the composites decreased,and the water permeability increased.After replacing part of the cement with silicon fume,the water permeability of the composites decreased and the chloride diffusion coefficient decreased.There was a gap between the rubber particles and the cement matrix,and the interface adhesion between them was weak,which led to the decrease of the strength of the composites.

关 键 词：废轮胎橡胶 混凝土 硅粉 复合材料 力学性能 耐久性 

分 类 号：TQ336.1[化学工程—橡胶工业] TU528[建筑科学—建筑技术科学]