摘要
目前,提高橡胶混凝土力学性能的措施主要是对橡胶颗粒进行表面改性。在本研究中,通过真空热处理(vacuum heat-treatment,VHT)的方法来提高橡胶砂浆的力学性能。结果表明:经过真空热处理后,橡胶砂浆的抗折、抗压强度提高。掺入用NaOH溶液预处理后的橡胶颗粒,砂浆强度提高更加显著。这是由于橡胶颗粒在一定温度下会部分分解,而分解产物改善了橡胶颗粒与水泥之间的粘结。NaOH对橡胶颗粒的热分解起到催化作用。橡胶颗粒越小,越容易分解。
The previous methods of improving the strength of rubberized concrete are surface modifications of the rubber particles. In this paper,the vacuum heat-treatment（ VHT） method is used to improve the strength of rubberized mortar. The obtained results show that the VHT can raise the flexural and compressive strength of rubberized mortars. The rising are more obvious on the rubberized mortars incorportiating pretreated rubber particles with NaOH or smaller size rubber particles. The reasons may be that the rubber will partially decompose at heat-treatment temperature and the decomposition products can enhance the adhesion between rubber and cement,the NaOH can catalyze the decomposition of rubber,and the smaller rubber particle is easier to decompose.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2016年第5期1637-1641,共5页
Bulletin of the Chinese Ceramic Society
基金
国家自然基金(U1204513)
关键词
橡胶砂浆
真空热处理
抗折强度
抗压强度
分解
rubberized mortar
vacuum heat-treatment
flexural strength
compressive strength
decomposition
