Natural asphalt modified binders used for high stiffness modulus asphalt concrete

[摘要] This paper presents a set of test results supporting the possibility of replacing, in Polish climate conditions, hard road 20/30 penetration grade bitumen used in the binder course and/or base course made of high stiffness modulus asphalt concrete with binders comprising of 35/50 or 50/70 penetration grade bitumens and additives in the form of natural Gilsonite or Trinidad Epuré asphalts. For the purpose of comparing the properties of the discussed asphalt binders, values of the Performance Grade have been determined according to the American Superpave system criteria.

[发布机构] Poznan University of Technology, Institute of Civil Engineering, Poznan, Poland^1;Poznan University of Technology, Institute of Civil Eng., Poznan, Poland^2

[学科分类] 土木及结构工程学

[关键词] Asphalt binders;Base course;Climate condition;Gilsonite;High stiffness;Natural asphalts;Performance grade;Trinidad