Zhongguo gonglu xuebao · 2008 · 37 citations · 0 references
EngineeringMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsPavement EngineeringStructural MaterialsAsphalt MaterialsPavement ConstructionPavement DesignPavement FatiguePavement MaterialsPaving MaterialsCuringDryingErosion ResistanceErosion Resistance DesignPavement Base DesignPavement Structural PerformanceRoad Base MaterialsShrinkage During Drying
The characteristics of semi-rigid base material were researched in four aspects: strength,temperature shrinkage and drying shrinkage,erosion resistance and fatigue.Conclusions are as following: strength of semi-rigid base material can be designed in a quite broad range by the requirement of pavement structure and the strength is obtained not only by the binder but also by aggregations properly designed;cracks caused by drying shrinkage are avoidable by well-timed curing and cracks caused by temperature shrinkage can be reduced evidendly by controlling the content of fine aggregate;anti-erosion performance of semi-rigid material can be obviously improved by designing proper material composition,such as reducing the content of fine aggregate,improving the strength of binders and increasing the void of mixtures;semi-rigid base material is stress sensitive material and a pavement will have a longer fatique life if semi-rigid base canbe placed in proper position of pavement.