沥青路面结构老化行为的试验分析

沥青路面在使用过程中,由于自然因素的作用使沥青结合料不断老化,影响了路面的使用性能.因为置于路面不同深度以及不同年限的沥青结合料,受到外界因素影响的程度不同,故老化程度也有所不同.对不同使用年限和不同层位的沥青结合料进行了样品抽提,经试验分析了沥青结合料的老化规律.试验结果表明:路面使用的年限越长,老化越严重,但从路面表层往下,老化程度呈现递减的规律.

Experimental Analysis on Asphalt Pavement Structure

Because of being affected by environment,asphalt binder will be ageing when the asphalt pavement is in use.And it will make the performance property change when asphalt ages.The asphalt binder influenced by ageing varies as the different location and the use of time.This paper studies this variability by sampling the asphalt binder with diverse layers and different use of time.The results demonstrated that the longer the pavement in use,the more serious of asphalt binder ageing.And the ageing degree decrease as the location' s depth increase.