Stabilization of Recycle Concrete with Hydraulic Cement for Pavement Materials

Abstract

The aim of this research to study the unconfined compressive strength of recycle concrete stabilized with hydraulic cement for road construction materials, recycle concrete blended follow on grainsize distribution test. The very of hydraulic cement is 1%, 2%, 3%, 4% and 5% by weight, and modified proctor test to optimized water content, curing at room temperature at 7 and 14 days the samples taken to soak for 2 hours prior to testing unconfined compressive strength. The result was found the optimization water content was 12%, unconfined compressive strength increase are cured periods. The maximum unconfined compressive strength of hydraulic cement 5% and curing 14 days was 49 ksc, and optimized of hydraulic cement was 2.5% for subbase design according to standard, DH – S 204/2556 Department of highway, Thailand. Possible to reused recycle concrete stabilized with hydraulic cement in subbase course materials.