矿料间隙率标准研究进展

矿料间隙率作为沥青混合料主要体积指标之一，对沥青混合料合理的体积组成设计及优良的使用性能具有重要影响。通过查阅、汇总和分析大量国内外相关文献，对矿料间隙率的计算方法、影响因素、最小值标准的发展历程及其与沥青膜厚的关系进行了综述。认为基于集料公称最大粒径的现有矿料间隙率最小值标准不太合理，今后应对集料特性、集料级配组成以及沥青膜厚与矿料间隙率的相互关系开展进一步研究，并应结合实体工程路面混合料的性能，建立更加合理的矿料间隙率标准或找到更好的替代方案。

Review on requirement of voids in mineral aggregates

As one of the major volumetric indexes, the voids in mineral aggregates have an important effect on the volumetric design of asphalt mix. Based on lots of correlative literatures, this paper reviews the calculating method and influencing factors of the voids in mineral aggregates, the developing course of the requirement of the voids in mineral aggregates and its relation to asphalt film. It is consumed that the existing minimum requirement of voids in mineral aggregates, only based on aggregates nominal maximum size, is unreasonable. More studies should be devoted to the relationship between the voids in mineral aggregates and aggregates characteristics, gradation and asphalt film, and the mixture performance of practical projects should also be considered to find the reasonable requirement or a potential alternative plan. 2 tabs, 3 figs, 17 refs.