辽曙道路沥青感温性的评价

Evaluation of Road Asphalt Temperature Sensitivity

在总结了国内外相关文献的基础上,介绍和论述了评价道路沥青感温性的各项指标,并利用针入度指数对辽河油田曙光一区的超稠原油生产的道路沥青的感温性进行了评价,同时与国内外一些品牌的沥青进行比较。评价道路沥青感温性的指标包括针入度指数PI、针入度粘度指数、粘温指数等;评价沥青高温稳定性的指标有软化点、当量软化点;评价沥青低温性能的指标有脆点和当量脆点等。实验结果表明,辽曙一区原油研制的1号和2号高等级道路沥青的PI值、当量软化点和当量脆点符合中国石油化工集团公司Q/SHR003-1998和Q/SHR004-1998标准,与国外一些公司的标准相比,具有较好的感温性。

The indexes of temperature sensitivity of road asphalt were introduced and discussed based on relative documents all over the world. At the same time, the temperature sensitivity of Liao-shu asphalt being made from ultra-thick crude oil was evaluated by using PI and compared them with those from China and other countries. The indexes of temperature sensitivity are various such as PI, PVN, VTS and so on. The indexes of high temperature stability are softening point and equivalent softening point. Indexes of low temperature stability are Fraass breaking point and equivalent Fraass breaking point. The experimental results show that Liao-shu 1~# and 2~# asphalts have preferably temperature sensitivity compared with other country company and accord with the Q/SHR003-1998 and Q/SHR004-1998 standards.