为研究粗集料棱角性对水泥稳定碎石强度的影响，基于数字图像处理技术，采用等效椭圆法评价粗集料的棱角性对石灰岩碎石与破碎鹅卵石的棱角性进行了对比分析，且对不同棱角性集料的工况组合水泥稳定碎石的强度性能进行了室内正交试验。研究结果表明：不考虑水泥因素的影响，无侧限抗压强度与棱角性正性相关；替换率相同条件下，19.0~26.5 mm的棱角性对无侧限抗压强度的影响小于9.5~19.0 mm的；棱角明显的粗集料和浑圆状的粗集料进行组合，可以提高水泥稳定碎石基层的劈裂强度。
In order to study the influence of the angularity of coarse aggregate on the strength of cement stabilized macadam，based on digital image processing technology，the angularity of limestone macadam and broken cobble were compared and analyzed by using equivalent elliptic method and the door orthogonal test was carried out to obtain the strength performance of combined cement stabilized macadam according to the working conditions of different angular aggregates. The test results show that unconfined compressive strength is positively related to angularity without considering the influence of cement. Under the same replacement rate，the influence of 19 ~ 26.5 mm angularity on unconfined compressive strength is less than that of 9.5 ~ 19 mm. The splitting strength of cement stabilized macadam base can be improved by combining the coarse aggregate with obvious edges and corners with the round coarse aggregate.
ZHANG Yan-hong, XU Long, FANG Jun-jie. Influence of coarse aggregate angularity on strength characteristics of cement stabilized macadam[J]. Journal of Transport Science and Engineering,2022,38(1):15-20.