No abstract

& In desert areas where good material sources are limited, the environment is harsh, and the processing and haulage of conventional good quality materials to the site for pavement layers can be expensive and time-consuming. Alternative methods to use readily available materials, windblown sand in this case, should be considered. This paper presents the results of a laboratory investigation into the stabilization of desert sand with cement kiln dust (CKD) for use in road pavement structures. Stabilization of this sand with a waste product, CKD, was achieved, but as large amounts of CKD were needed to meet pavement layer standards, chemical additives were used to reduce the CKD requirement. Potential additivesÐsodium metasilicate and calcium chlorideÐwere selected on the basis of reports from earlier studies on sand±cement stabilization.