摘要
研究了不同工艺条件下煤沥青与石油沥青进行调配所得混合沥青的路用性能,得出混合沥青调配工艺优化结果：煤沥青粒径60-80目,煤沥青掺加量15%,搅拌方式为剪切搅拌,调配温度为125℃。比对各项指标,可以看出煤沥青的加入可以提高石油沥青的软化点,降低针入度,改善石油沥青的高温性能和抗剪切性能。煤沥青与石油沥青体系不能完全混溶,导致煤沥青颗粒物的存在,这又导致石油沥青延度明显降低。
Modified asphalt was prepared by mixing Coal Tar Pitch（CTP） and petroleum asphalt under different technological condition.The road performance of coal tar pitch modified asphalt（CTPMA） was studied.The results showed optimized condition with 60-80 CTP mesh,15%CTP ratio,shearing stirring method and 125 ℃ stirring temperature.It also showed that softening point value increased while penetration value decreased as CTP added,which meant high- temperature and anti- shearing performance of the asphalt were improved.However,CTP cannot be fully dissolved in petroleum asphalt,and ductility of petroleum asphalt decreased significandy due to the existence of CTP particles.
出处
《石油沥青》
2016年第1期17-20,共4页
Petroleum Asphalt
基金
太原科技大学研究生科技创新项目基金(20145033)
山西省自然科学基金(2012011008-3)
山西省UIT项目基金(2013257)
关键词
混合沥青
工艺条件
优化
mixed asphalt
technological condition
optimization
