沥青混合料约束试件温度应力试验研究.pdf

32 12 武 汉 理 工 大 学 学 报 Vol. 32 No. 12 2010 6 JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY Jun. 2010 DOI: 10. 3963/ j. issn. 2010. 12. 009 1, 2 3 孟庆营 , 张彩利 ( 1. , 710064; 2. , 300074; 3. , 300132) : 针对AC 级配及Su er ave 级配的不同沥青混合料采用约束试件温度应力试验对其低温抗裂性能进 评价, 并对约束试件温度应力试验的各项评价指标进 了详细分析结果表明, 约束试件温度应力试验能够准确模拟沥青路 面在降温过程中的开裂, 冻断温度可作为评价沥青混合料低温抗裂性能好坏的评价指标 : 沥青混合料; 低温抗裂性; 约束试件温度应力试验; 冻断温度; 评价指标 : U 4 14 : A :2010) Reserach on Thermal Stress Restrained S ecimen Test of As halt Mixture 1, 2 3 M EN G Qi ngy ing , ZHA N G Cail i ( 1. School of H ighway, Chang an University , Xi an 710064, China; 2. Tianjin Munici al Engineering Research Institute, Tianjin 300074, China; 3. School of Civil Engineering, Hebei University of Technology , Tianjin 300132, China) Abstract: On the basis of the thermal stress restrained s ecimen test ( TSRST ) , the ant i cracking erformance of as halt mixture blended w ith different kinds of as halt and different gradation was evaluated. At the same time, the evaluation indexes of TSRST is analyses. The results show ed that TSRST can accurate simulate low tem erature cracking of as halt mixtures on tem erature reduction and freezing tem erature are the good index to evaluate t he low tem erature erformance of as halt mix ture. Key words: as halt mixture; lowtem erature anti cracking erformance; TSRST ; freezing tem erature; evaluation index 1 , , , , , [ 1] , (TSRST) : : ( 0908) . : ( 1976)