废旧橡胶微粒对水泥砂浆性能的影响研究

本文探讨了不同工艺加工而成的橡胶微粒掺量、粒径对砂浆工作性和强度的影响规律。研究结果表明：砂浆流动性随橡胶微粒粒径的增加而增加，随掺量的增加先增加后回落；切削法生产的橡胶微粒配制的砂浆流动度总体上高于摩擦法。橡胶微粒砂浆抗折强度、抗压强度均随橡胶微粒掺量的增加而减小，摩擦法生产的橡胶微粒砂浆力学性能要好于切削法橡胶微粒砂浆。并对其机理进行了探索与分析。

Investigation on Performance of Rubber Particle to Cement Mortar

The effect of crumb rubber mortar (CRM) workability and strength is studied on rubber particles dosages ,size ,mixture methods. The result shows that fluidity increases with rubber particles size increasing; and in-creases then decreases with rubber particles dosages increasing; cutting method is higher than friction method on fluidity of CRaM as a whole. Flexural、compressive strength decrease both with robber particles dosages increasing,and decreased extent of compressive strength is bigger; and increases with rubber particles size increasing; rubber particle with friction method is higher than cutting method in strength. And mechanism which compressive strength changes with temperature is studied.