撒布型应力吸收层技术性能的试验方法

Methods for Measuring Technical Performance of Spreading Stress Absorbing Layer

为实现撒布型应力吸收层的技术性能评价和设计时沥青类型与设计参数的合理选择,对该吸收层技术性能的试验方法进行了研究.基于撒布型应力吸收层使用功能的要求,设计了评价其抗反射裂缝能力、抗剪性能和抗拉性能的试验方法,并以橡胶沥青应力吸收层和SBS改性沥青应力吸收层检验了所设计试验方法的适用性.结果表明:所设计的试验方法可操作性强、结果合理且规律性明显,从而为撒布型应力吸收层的技术性能评价及设计参数确定提供了一种途径.

Methods for measuring technical performance of spreading stress absorbing layer were proposed to guide suitable selection of asphalt binder type and design parameter. Based on the service function analysis of spreading stress absorbing layer, methods for evaluating the anti-reflective cracking capability, the shear behavior and the tensile properties were developed. Asphalt-rubber stress absorbing layer and SBS modified asphalt stress absorbing layer were then used to evaluate the validity of designed methods. The simplicity and the reliability of the methods as well as the regularity of test data provide the basis for technical evaluation and design parameter determination of spreading stress absorbing layer.