Function Design of Cement Stabilized Crushed Stone Drainage Base

Based on analysis of the influence degrees of structure types at early damages of cement pavements in large-grade highways, combined structure type of cement stabilized crushed stone drainage base and semi-rigid base is proposed. Base on function analysis of drainage base, design principles and indices of the cement stabilized crashed stone mixture are determined. And then, the type of coarse framework, distributing of cement slurry, and the component of grading are determined according to new characters of material design method which including the optimum vibrating compaction techniques and the dynamic stress press-in test having confined pressure and the volume design method in grading components. Finally, the method for determining the reasonable consistency of cement stabilized crushed stone mixture is presented, which adopts porosity diversity and strength as evaluation criterion. The void-framework cement stabilized crushed stone mixture demanding drainage base function will be consequently designed.