沥青路面低温开裂的影响因素分析

研究了影响沥青路面低温开裂的主要因素及影响程度。在对试验数据进行整理的基础上,运用灰色关联的方法,分析了各影响因素与沥青路面低温开裂的关联程度。研究表明:沥青混合料的劲度模量对沥青路面低温开裂的影响程度最大,约占17.3%,而沥青感温性、沥青混合料收缩系数、面层厚度、基层类型、降温速率、路龄的影响程度约占13.5%、13.9%、13.1%、14.1%、14.0%和13.9%。

Influencing Factors on Cracks of Bituminous Pavement at Low-temperature

A study was conducted to explore the main factors and their influencing degree on cracks of bituminous pavement at low-temperature. The associated degree between the influencing factors and the cracks at low temperature was analysed in terms of investigation data by grey relational grade. Result showed that stiffness modulus of asphalt mixture has the most significant influence on the cracks of bituminous pavement at low-temperature, and its influencing degree comprised about 17.3%. While the influencing degrees of asphalt temperature susceptibility, contraction coefficient of asphalt mixture, pavement coat thickness, base type, cooling rate and usage term accounted for 13.5%, 13.9%, 13.1%, 14.1%, 14.0% and 13.9%, respectively.