Abstract: Through experiment data, the compacted rebound modulus of semi-flexible pavement compound material (whose porosity is 25%) was calculated. Combined this with actual metrical deflection to back-calculation compacted rebound modulus, method to determine the compacted rebound modulus of the compound pavement was discussed. With the method, the rebound modulus of mixture porosity of 20% and 30% respectively were computed, and the range of compacted rebound modulus was put forward.Finally, the relationship between compacted rebound modulus and the void was fit out. Making use of the gained equation, rebound modulus of any porosity can be determined, which provides important parameters for designing semi-flexible compound pavement.

Key words: semi-flexible pavement compound material, base mixture porosity, compacted modulus, representative deflection, actual metrical deflection

摘要： 通过对基体混合料设计空隙率25%的复合材料进行室内试验得到相应的抗压回弹模量,并与实体路面工程实测弯沉反算得到的抗压回弹模量进行比较,提出了确定复合材料抗压回弹模量的改进方法,由此计算出基体混合料空隙率分别为20%和30%对应的复合材料回弹模量,并确定了相应的取值范围,最后通过回归得到复合材料回弹模量与基体混合料空隙率之间的关系式,由此可确定任意空隙率的复合材料回弹模量,为半柔性复合路面设计提供了重要参数。

关键词: 半柔性路面复合材料, 基体混合料空隙率, 抗压回弹模量, 代表弯沉, 实测弯沉