煤直接液化残渣对道路沥青改性作用的初步评价  

Preliminary study on direct coal liquefaction residue as paving asphalt modifier

作　　者：王寨霞[1] 杨建丽[1] 刘振宇[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室

出　　处：《燃料化学学报》2007年第1期109-112,共4页Journal of Fuel Chemistry and Technology

基　　金：国家重点基础研究发展规划(973计划;2004CB217602);国家自然科学基金(20576138);山西省重点实验室开放基金

摘　　要：Based on the specifications of ASTM D571095 and BSI BS-3690 for Trinidad Lake Asphalt(TLA) modified asphalt,two residues(CLA1 and CLA2)from direct coal liquefaction(DCL) were evaluated for using as high grade paving asphalt modifier.TLA was used as comparison.The results show that CLA1-and CLA2-modified asphalt with 7% of CLA1 or CLA2 addition has similar modification ability as 20% TLA-modified asphalt.The modified asphalts meet the specifications for 40～55 or 50 penetration grade.The penetration ratio of CLA2-modified asphalt after TFOT is significantly higher,which indicates its supreme ability to against the temperature aging.Preliminary study implies that DCL residues may be a suitable alternative additive for producing TLA-type modified asphalt.Furthermore it was also found that with increasing amount of CLA1 or CLA2 addition the softening point of the modified asphalts increase and the penetration value and the ductility decrease.Based on the specifications of ASTM D5710-95 and BSI BS-3690 for Trinidad Lake Asphalt （TLA） modified asphalt, two residues （CLA1 and CLA2 ）from direct coal liquefaction （DCL） were evaluated for using as high grade paving asphalt modifier. TLA was used as comparison. The results show that CLA1- and CLA2- modified asphalt with 7% of CLA1 or CLA2 addition has similar modification ability as 20% TLA-modified asphalt. The modifred asphalts meet the specifications for 40 - 55 or 50 penetration grade. The penetration ratio of CLA2-modified asphalt after TFOT is significantly higher, which indicates its supreme ability to against the temperature aging. Preliminary study implies that DCL residues may be a suitable alternative additive for producing TLA-type modified asphalt. Furthermore it was also found that with increasing amount of CLA1 or CLA2 addition the softening point of the modified asphalts increase and the penetration value and the ductility decrease.

关 键 词：煤直接液化残渣 TLA 改性沥青 

分 类 号：TQ536.4[化学工程—煤化学工程]