沥青路面层间结合状态试验与评价方法研究

Study of test and evaluation method on interfacial combining state of asphalt pavement

近年来沥青路面的层间结合问题越来越受到人们的关注,目前我国现行的沥青路面设计规范中假定路面结构层间为完全连续的接触状态这与实际是不相符的,因此,以此为切入点在已有研究的基础上结合试验验证应用层间粘结系数来表征路面层间结合状态的改变,并充分论证其可行性.此外针对现今路面典型结构,建立不同试验组合对层间粘结系数值进行测定,并根据试验结果结合理论分析为现行规范半刚性基层沥青路面按层间完全连续验算设计指标时提出了修正范围.

The interfacial combining problem of asphalt pavement has got more and more attention in resent years. At present, in our country in the active specification for design of highway asphalt pavement the interfacial state of pavement structure is supposed as complete continuity state, which doesn＇ t corresponded with the actual state. Regarded it as the breakthrough point, on the base of the former study, interfacial bond factor was applied to be a token of the change of interfacial combining state of pavement, and the feasibility of the method was testifed by combining test. Moreover, the paper aimed at the typical pavement structure nowa- days, established different test combinations and mensurated interfacial bond factor, then on the basis of test results combined the theoretical analysis to put forward the revised range for the checking computation of design index according to interfacial complete continuity in asphalt pavement on the semi -rigid base course of the active specifications.