水泥稳定碎石多孔性材料的组成与性能探讨

Study on the Relation between Material Composition and Performance of the Porous Composites of Cement Treated Crushed Stone

根据室内试验结果 ,对水泥稳定碎石多孔性材料的组成与其孔隙率、渗透系数、强度和模量的关系进行了分析 ,探讨了集料级配、水泥用量等因素的影响 .通过逐步回归分析 ,建立了水泥稳定碎石材料组成与性能之间的回归公式 .在此基础上 ,探讨了水泥稳定碎石的组成设计方法 .

Aggregate gradation and cement content are important factors that affect the porousness, the permeability coefficient, the strength and modulus of cement treated crushed stone. Samples of five open-graded aggregates, and four levels of cement content were tested in 'drainage-lag' permeameter developed by Barber and Sawyer, and then the samples were tested in compressive strength and modulus of resilience. The relations between material composition and performance of cement treated crushed stone were discussed and the regression equations were developed on the basis of laboratory tests and stepwise regression analysis. These results provide valuable guide for the mix design of cement treated crushed stone.