关键词: 类似级配沥青混合料, 有效油石体积比, 最佳油石比, 预估公式

Abstract: The concept of effective asphault ratio by volume of aggregate was proposed by using the volume features, such as voids ratio of the compacted hot mixed asphault(HMA) mixtures, voids ratio in mineral aggregate, and etc., and by considering the asphault absorption of aggregate. According to the optimum effective asphalt ratio by volume of aggregate, the relationship of the optimum asphalt ratios between the similar gradations by weight of aggregate was analysed. A widespread meaning formula was developed. At the same time, the established formula was compared with the estimate formula presented in the new “Technical Specifications for Construction of Highway Asphalt Pavements”. The analysis indicates that this formula has more extensive applicability.

Key words: effective asphalt ratio by volume of aggregate, the optimum asphalt ratio by weight of aggregate, estimate formula , imilar gradation asphalt mixture