Effect of Characteristic Specifications on Fracture Toughness of Asphalt Concrete Materials
In this research,the fracture toughness (KIc) of different compositions of asphalt mixtures is investigated experimentally and the effects of asphalt characteristic specifications including the aggregate size,aggregate type (i.e.limestone and siliceous),air void percentage and bitumen type on fracture toughness is studied.Several edge cracked specimens with the shape of semi-circular and subjected to symmetric three point bend loading were manufactured with different compositions and then tested at -15oc.The experimental results showed the noticeable influence of characteristic specifications of asphalt mixtures on the value of fracture toughness.Generally,the value of fracture toughness decreases for those mixtures containing smaller size of aggregates made of siliceous with higher percentages of air voids and softer binder types.
Asphalt mixture Low temperature Fracture toughness Characteristic specifications
Hamid Behbahani MohammadReza. M. Aliha Hassan. Fazaeli Mohammad.H. Rezaeifar
School of Civil Engineering,Iran University of Science and Technology(IUST),Narmak,16846-13114,Tehra Welding and Joining Research Center,School of Industrial Engineering,Iran University of Science and
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）