水泥路面下ATPB基层沥青混合料研究

Study of ATPB under Cement Concrete Pavement

由于用于水泥混凝土路面下的ATPB的特殊性,本文围绕其最佳沥青用量的确定方法以及试件成型方法2个方面展开研究.提出了沥青膜-析漏试验方法以及震动台法来分别确定ATPB基层沥青混合料的最佳沥青用量和成型试件.并根据这2种方法成型试件检验ATPB的性能,得到几条结论:强度、抗压回弹模量、排水性能、水稳定性能均满足要求;强度、抗压回弹模量、排水性能、水稳定性能与孔隙率、级配组成都有一定的关系.

To reduce water damage of cement pavement,employing ATPB under cement pavement is investigated in the paper.The paper focuses on the way to determine the optimum asphalt content and to form test specimens,and proposes asphaltmembrane-leakage experiment method and vibrostand method.The performance of ATPB is inspected by using test specimens formed by the above methods and two conclusions are drawn：（1） strength,compressive resilience modulus,moisture susceptibility,and drainage capacity all meet requirements,（2） strength,compressive resilience modulus,moisture susceptibility,and drainage capacity are all related to porosity and graduation composition.