大流动性改性橡胶混凝土的力学性能  

作　　者：王海成 韩勇 王守强 冶小晨 马丽 陈成芹(指导) 武红娟(指导) 

机构地区：[1]西北民族大学土木工程学院,甘肃兰州730000 [2]不详

出　　处：《科技风》2021年第27期127-129,共3页

基　　金：西北民族大学国家级大学生创新创业训练计划资助项目(项目编号:202010742084)。

摘　　要：为了提高废旧轮胎的利用率,取代天然细骨料加入混凝土中,制成橡胶混凝土。针对不同粒径、不同来源橡胶,改变橡胶掺量、橡胶改性方式,设计配合比,制备试验模块,并以此来探究混凝土和易性,表观密度,抗压抗折强度等性能在不同条件下的影响变化规律。得出结果:掺加橡胶会降低混凝土抗压强度,且在橡胶双掺时降低程度大于橡胶单掺。橡胶改性则会提高混凝土抗压强度,在改性一天的情况下提高程度最高,随着改性天数增加其提高程度降低。In order to improve the utilization rate of waste tires,rubber concrete was made by adding them to concrete instead of natural fine aggregate.According to the rubber with different particle sizes and different sources,changing the rubber content,rubber modification methods,designing the mixture ratio and preparing the test module,so as to explore the influence of concrete workability,apparent density,compressive and flexural strength and other properties under different conditions.The results show that adding rubber will reduce the compressive strength of concrete,and the degree of reduction is greater when rubber is added.Rubber modification can improve the compressive strength of concrete,and the improvement degree is the highest in the case of one day of modification,and decreases with the increase of modification days.

关 键 词：自密实混凝土 力学性能 橡胶掺量 橡胶改性 

分 类 号：TQ3[化学工程]