DURABILITY EVALUATION FOR CFA STABILIZED BASE WITH CEMENT SLURRY BY ACCELERATED LOAD TESTE

Abstract

Cement foamed asphalt (CFA) stabilized base that is one of the pavement recycling methods utilized on the roads has been noticed widely, because the global environmental protection and preservation is generally recognized to be necessary in these days. However, cement sometimes scatters when it is spread and mixed in the sites, so it is afraid that the scattering cement would influence on workers' health and the surround environment. In this study, the construction method using cement slurry was thought up against scattering cement. The mix design of CFA base mixture with slurry cement was conducted and the machine to spread the cement slurry was developed. The accelerated loading tests were conducted in the trial yard with the pavement cross-section for the traffic class N3. From results of the tests, it was found that CFA stabilized base has superior durability in view of surface condition, structural capacity and material properties.