橡胶粉改性水泥沥青砂浆的研究

Study on cement asphalt mortar modified with rubber powder

采用橡胶粉改性水泥沥青(CA)砂浆,并对其力学性能进行了重点测试。结果表明,随着橡胶粉替加入量的增加,CA砂浆早期强度呈减小趋势,但28天强度则相反;抗压强度均随温度的升高而减小,且随加载速率的增大而增大;橡胶粉越多,CA砂浆对温度的敏感性降低,且加载速率对其抗压强度的影响减小。

The cement asphalt（CA）mortar was modified with wasted rubber power and its mechanical property was measured. The results have indicated that the initial strength of CA mortar has decreased with the increasing of wasted rub- ber powder content,but the strength increased after 28 days. The compression strength of CA mortar has decreased with the rising of temperature and increased with the increasing of loading speed. However, the content of wasted rubber powder has been more, the sensitiveness of CA mortar to temperature has been lower and the influence of loading speed on the com- pression strength of CA mortar has been more unobvious.