Performance of cement stabilized recycled aggregate base course added with metakaolin

In order to better use the old cement concrete pavement materials in stabilized base of reconstruction or new road. this paper, metakaolin was used replace recycled fine aggregate with different proportions prepare mixture, and physical mechanical properties dry shrinkage mixture were studied. The results study show that adding a proper amount can reduce optimal water content increases maximum density 7d unconfined compressive strength also reduces total loss mixture. research provide ideas for recycling road waste materials.