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水泥稳定碎石基层强度高,变形小,优点突出,在我国高等级公路中得到广泛的运用。然而在温度和荷载的作用下很容易产生反射裂缝,极大地损害了其路用功能。结合云南省当地实际情况,依托保龙高速公路,选取不同级配,添加不同水泥剂量,通过击实试验确定水泥稳定碎石相应的最佳含水量和最大干密度。在此基础上评价了不同方案水泥稳定碎石的干缩温缩性能,从而确定最佳方案,对其他工程具有借鉴意义。
Cement stabilized macadam base high strength, small deformation, the advantages of outstanding, in our high-grade highway has been widely used. However, it is easy to produce reflection cracks under the action of temperature and load, greatly impairing the function of the road. According to the actual situation in Yunnan Province, relying on the Bao-Long Expressway, select different grading, add different cement dosage, compaction test to determine the optimum moisture content and maximum dry density of cement stabilized macadam. On this basis, the shrinkage and shrinkage properties of different schemes of cement stabilized macadam were evaluated, so as to determine the best solution, which has reference significance for other projects.