摘要
采用Superpave简单性能试验机(SPT)分别测试了布敦岩沥青混合料、基质沥青混合料和SBS改性沥青混合料在不同温度和加载频率下的动态模量和相位角,并根据时间-温度置换原理,通过非线性最小二乘拟合,确定了3种沥青混合料的动态模量主曲线和移位因子。结果表明,布敦岩沥青混合料具有优良的抵抗高温或低频荷载作用的能力,其动态模量满足法国高模量沥青混凝土的界定标准。
Superpave simple performance test machine （SPT） was used to test the dynamic modulus and phase angles of BRA modified asphalt mix, base asphalt mix, SBS modified asphalt mix respectively at different temperatures and loading frequencies, and dynamic modulus master curves and shift factors for three kinds of asphalt mixtures were deter mined according to time-temperature superposition principle and nonlinear least-square fitting. The results indicate that BRA modified asphalt mix has excellent resistance to high temperature or low frequency loading, whose dynamic modulus meets definition standard of high modulus asphalt concrete in France.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2011年第10期42-45,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50578016)
