摘要
通过数字散斑处理技术,采用三分点加荷的力学模式,详细研究了沥青小梁在纯拉伸状态下的变形及其随时间的变化情况,以此得到了低温条件下沥青材料的拉伸应变和应变速率;通过剪切状态下的剪变率验证了所测拉伸应变速率的准确性.
By means of digital specklegram processing technology, the deformation characteristic and change of stretching deformation with the time for asphalt beam under the stretching status were researched, as a result, the strain and the strain rate of asphalt in low temperature were calculated. The accuracy of the test result was verified by shear rate under the shear status.
出处
《建筑材料学报》
EI
CAS
CSCD
2003年第3期321-324,共4页
Journal of Building Materials
基金
国家自然科学基金资助项目(50008005)
中国博士后基金资助项目
关键词
沥青
低温
拉伸应变速率
力学模式
数字散斑
沥青路面
digital specklegram processing technology
asphalt
low temperature
stretching strain rate
