【摘要】 采用母体法制备改性沥青 ,研究了三元乙丙橡胶 (EPDM)改性茂名 90 #沥青。通过改变 EPDM用量、薄膜烘箱老化 (TFOT)和动态力学分析等方法 ,并与 SBR改性沥青比较 ,考察了 EPDM改性沥青的基本性能。结果发现 ,EPDM改性后沥青的感温性明显下降 ,耐老化性、低温抗裂性和高温热稳定性提高 ,但贮存稳定性差。更多还原

【Abstract】 The asphalt modified by EPDM was investigated and it was prepared by masterbach method. The behaviour of the asphalt was researched by varying the levels of EPDM, TFOT and dynamic mechanic analysis, and comparing to the asphalt modified by SBR. The results showed that the temperature sencibity of the asphalt modified by EPDM was decreased obviously and the age resistance, cracking resistance at low temperature and high temperature heat stability of it was increased, but its storage stability was worse.更多还原