Abstract

Cement is expected to provide a stabilization agent to the local granular materials used in roads and airports construction as a sub-base course. The performance-related properties of granular materials have been studied (with and without cement). The effect of cement addition on the results of CBR test and Atterberg limits determination has been studied. The factors which have been selected in this study include cement content, and the aging time after which the specimen has been tested. The ideal (cement /granular materials) ratio has been found as 6% that is give CBR value more than 100% of the CBR value for granular material only. The increment of CBR value due to the cement addition as 6% on the ESAL repetitions until reach terminal serviceability index ρt=2.5 has been studied according to AASHTO Guide. The cement addition as 6% to the sub-base course increases ESAL repetitions by about 45% greater than sub-base course established from granular materials without cement, within the limitation of this study.