Experimental Determination of Mode II Fracture Resistance in Asphalt Concretes
This paper presents a test set-up using semi-circular bend (SCB) specimen for measuring pure mode-II fracture toughness of asphalt concretes.Three-point bend fracture tests were performed on the SCB specimens at low temperature.The results showed that this set-up could be used for conducting mode-II fracture tests on hot mix asphalt (HMA) specimens.Linear elastic fracture mechanics (LEFM) concept was used to study the fracture behavior of cracked asphalt concrete.Mode-II critical stress intensity factor,KIIc,was calculated using the fracture load measured from the three-point bend tests.In addition to pure mode-II tests,similar tests were carried out for pure mode-I loading.Results showed that mode-II critical stress intensity factor was higher than that of pure mode-I loading.
Asphalt concrete Critical stress intensity factor Low temperature Pure mode-II fracture
M.R. Ayatollahi Sadjad Pirmohammad
School of Mechanical Engineering,Iran University of Science and Technology,16846,Iran
国际会议
北京
英文
1-8
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）