【摘要】 在不同橡胶粉细度、掺量及制备工艺的条件下,测试针入度、软化点和延度指标,研究了胶粉细度、掺量、搅拌时间和温度对沥青性能的影响;并验证了SMA—13橡胶改性沥青混合料的路用性能。研究表明:相同掺量下,60目胶粉改性沥青的性能优于40目改性沥青;搅拌温度200℃时,60目胶粉裂解过度;橡胶沥青的针入度、软化点和延度随搅拌时间延长而规律性变化。更多还原

【Abstract】 Relationship between the properties of rubber modified asphalt with fineness,usage and preparation technology,was studied by needle penetration,softening point and ductility.And the road performance of rubber modified asphalt mixture was also discussed.It’s indicated that rubber 60mesh modified asphalt show out a better property than 40 mesh under the same use level.Research shows that the rubber was over cracked.And the needle penetration,softening point and ductility of rubber modified asphalt changed with the same regular pattern with the mixing time increasing.更多还原