关键词: 沥青稳定碎石, 水稳定性, 影响因素, 灰关联熵

Abstract: There are some factors influencing the moisture stability of bituminous stabilized macadam,including asphalt property,aggregate property,asphalt mixture performance,construction condition and environment.Among these factors,finding out key influence factors possesses substantial significance to control moisture stability of bituminous stabilized macadam.The degree of various factors influencing the moisture stability of bituminous stabilized macadam is studied through grey correlation entropy.These influence factors include asphalt penetration,passing percent of 4.75 mm mesh,passing percent of 0.075 mm mesh,nominal biggest dimension of aggregate and asphalt dosage,voids ratio,saturation,fill-bitumen ratio of asphalt mixture.The results show that the main factors influencing the moisture stability of bituminous stabilized macadam are asphalt dosage,saturation of asphalt mixture,asphalt penetration and voids ratio of asphalt mixture.

Key words: bituminous stabilized macadam, moisture stability, influence factor, grey correlation entropy