蠕变劲度模量—评估沥青混合料路用性能的有效指标

Creep Modulus——An Effective Index Evaluating Asphalt Mix Performance

本文在分析我国现行沥青混合料设计方法之不足的基础上,对于沥青混合料的力学指标蠕变劲度模量进行了研究。结果表明,该指标既同沥青混合料的组成密切相关,又能反映沥青混合料的路用性能,因而可以用于沥青混合料的组成设计、路用性能评估以及路面结构设计,这一指标的应用将使得我国现行沥青混合料设计方法的缺陷得以弥补成为可能。此外,本文还对这一指标的应用前景进行了探讨。

In this article, the deficiencies of the conventional mix design method used in China and the application potential of creep modulus are discussed. Primary studies indicate that there exist good relations between creep modulus and pavement distress, such as ruttling and cracking, It is also shown that asphalt mix.variables have significant effects on creep modulus.Therefore, the creep modulus of asphalt mix can be used as an effective index evaluating asphalt mix performance and will be further used in asphalt mix design. Finauy, the new reasonable mix design method is primarily developed.