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通过引入VMA*,借鉴贝雷法的骨架思想,结合体积法的填充原则,提出基于VMA*的排水路面沥青混合料矿料组成设计方法。针对基于VMA*设计的排水沥青混合料矿料组成特点,提出贝雷法三参数级配评价中CA值的修正公式及其参数FAc和FAf范围。计算及验证结果表明,基于VMA*的矿料组成设计方法适合排水路面沥青混合料矿料组成设计,修正后的贝雷法三参数级配评价法适用于评价排水沥青混合料,其参数FAc和FAf范围应为0.5～0.8。
By introducing VMA * and drawing on the skeleton idea of Berea method and combining with the principle of volumetric filling, the design method of aggregate composition of asphalt mixture for drainage pavement based on VMA * is proposed. Aiming at the characteristics of drainage asphalt mixture based on VMA *, the correction formula of CA value and the range of parameters FAc and FAf in the evaluation of three parameters of Bereth are proposed. The calculation and verification results show that the VMA * -based design of mineral aggregate is suitable for the design of aggregate composition of asphalt mixture for drainage pavement. The modified Bereth three-grade grading evaluation method is suitable for evaluating drainage asphalt mixture with parameters FAc and FAf range should be 0.5 ~ 0.8.