基于抗车辙和抗开裂的沥青混合料平衡设计

Study on New Mix Design Method for Balancing Anti-rutting and Anti-cracking

在分析马歇尔配合比设计方法存在的不足之处的基础上,提出了一种新的基于抗车辙和抗开裂的沥青混合料平衡设计方法。分别采用马歇尔配合比设计方法和基于抗车辙和抗开裂的沥青混合料平衡设计方法对四种沥青混合料AC-13、SUP-13、CAVF-13、BLF-13进行最佳油石比确定,并根据设计过程和设计结果对两种方法进行了比较评价。研究结果表明：采用基于抗车辙和抗开裂的沥青混合料平衡设计方法确定的最佳油石比都比采用马歇尔设计法确定的最佳油石比要小0.1%-0.3%;且基于抗车辙和抗开裂的沥青混合料平衡设计方法比马歇尔设计法更能平衡沥青混合料高温稳定性与低温抗裂性之间的矛盾,使沥青混合料的路用性能更符合沥青路面工程的气候条件的要求。

Based on analyzing the deficiencies of Marshall mix design method,a new mix design method for balancing anti-rutting and anti-cracking was put forward.Authors determined the optimal Oil-Stone Rate of AC-13,SUP-13,CAVF-13,BLF-13 with Marshall mix design method and new mix design method for balancing anti-rutting and anti-cracking separately.Then authors compared and appraised these design methods.The results show that the optimal Oil-Stone Rate designed by new mix design method for balancing anti-rutting and anti-cracking is 0.1~0.3% smaller than that designed by Marshall mix design method.And the pavement performance of asphalt mixtures designed by new mix design method for balancing anti-rutting and anti-cracking is more in line with the requirements of climatic condition of the asphalt pavement engineering than that of asphalt mixtures designed by Marshall mix design method.