摘要
在不同的温度下进行沥青混合料剪切性能试验,结果显示:随着温度的升高,沥青混合料的抗剪强度减小,剪切模量也变小。抗剪强度与剪切模量有较好的相关性。具有较高抗剪强度的沥青混合料也具有较大的剪切模量,在车辆荷载作用下不会产生较大的剪切疲劳变形。与剪切疲劳变形试验相比,抗剪强度试验相对简便和快速,在确定抗剪强度与剪切模量之间的关系后,就可以直接采用抗剪强度试验来评价沥青混合料抵抗剪切变形的能力。
Through the shear performance test of asphalt mixture under different temperature, the results show both shear strength and shear module decrease following with increasing temperature. Good relationship is found between shear strength and shear module from the fitting data. Asphalt mixture with high shear strength has high shear modulus, which can slow down the permanent deformation development in asphalt pavement. Compared with shear fatigue deformation test, shear strength test has more advantages for its convenience. When the correlativity between shear strength and shear modulus is ascertained, shear fatigue deformation performance of asphalt mixture can be deduced from shear strength.
出处
《交通标准化》
2009年第23期69-72,共4页
Communications Standardization
基金
江苏省自然科学基金(BK2008218)
关键词
剪切强度
剪切模量
温度
单轴贯入试验
剪切疲劳变形
shear strength
shear modulus
temperature
uniaxial penetration test
shear fatigue deformation
