Shear property of ultrathin wearing course asphalt mixture
(1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang′
an University, Xi′an, Shaanxi 710064, China; 2. Xi′an Highway Research Institute, Xi′
an, Shaanxi 710054, China)
Abstract：The effects of raw material parameters and experimental conditions on shear
strength of asphalt mixture were investigated based on uniaxial penetrating test and
unconfined compressive test. The effects of SBS dosage, reinforcing agent dosage and
gradation type on high temperature stability, low temperature crack resistance, water
stability and antistripping performance of asphalt mixture were discussed by laboratory
experiments. The results show that the shear property of skeleton structure is better than
that of suspended dense structure, and the shear property of SBS modified asphalt mixture
is better than that of matrix asphalt mixture. The shear strength of asphalt mixture with
optimum asphalt content is large, and reinforcing agent can improve the shear property of
mixture effectively. High temperature condition and running vehicle at low speed easily
cause the shear failure of ultrathin asphalt wearing course. When SBS dosage and
reinforcing agent dosage are respective 4.0% to 4.5% and 0.30% to 0.50%, the ultrathin
asphalt wearing course can meet the requirements of shear property, other pavement
performance and economy.
孙培, 韩森, 李晓娟, 李微. 超薄磨耗层沥青混合料的抗剪性能[J]. 江苏大学学报（自然科学版）, 2016, 37(5): 610-615.
SUN Pei, HAN Sen, LI Xiao-Juan, LI Wei. Shear property of ultrathin wearing course asphalt mixture[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2016, 37(5): 610-615.
2016, Vol. 37 
