摘要
根据应变控制模式下的四点小梁弯曲疲劳试验方法,研究了3种不同改性沥青对浇筑式沥青混合料疲劳的影响。结果显示:不同的改性沥青对浇筑式沥青混合料的疲劳性能影响非常显著,SK70基质沥青与湖沥青复合改性的沥青和ZX-30改性沥青成型的浇筑式沥青混凝土具有优异的抗疲劳性能,不同改性沥青对浇筑式沥青混合料的粘弹性能影响较大,浇筑式沥青混合料的滞后角愈大则疲劳寿命愈好。
The influence of 3 kinds of asphalt species on the fatigue performance of gussasphalt concrete was studied by means of four-point fatigue bending test under strain-controlled mode.The results show that different asphalt species influence the fatigue performance of gussasphalt concrete significantly; the fatigue performance of gussasphalt concrete is excellent when SK70 and lake asphalt compound modified asphalt and ZX-30 modified asphalt are chosen.Different asphalt species significantly influence the visco-elasticity of gussasphalt concrete as well; the bigger lag angles of gussasphalt concrete are,the better fatigue life is.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2013年第5期950-952,978,共4页
Journal of Chongqing Jiaotong University(Natural Science)
基金
中国博士后科学基金项目(2011M501396)
关键词
浇筑式沥青混合料
沥青品种
劲度模量
疲劳性能
滞后角
gussasphalt concrete
asphalt species
stiffness modulus
fatigue performance
lag angle
