Use of scoria waste as subbase stabilization material for highway flexible pavement

Abstract

Usability of scoria waste as subbase stabilization material was investigated. Initially, the physical properties of scoria waste were examined. The usage of scoria waste in subbase layer of the pavement was investigated. In the study, experimental researches such as stability to freeze, solidity, strength, Atterberg limits and California Bearing Ratio tests were carried out on samples prepared by using scoria waste. Scoria and natural quarry materials were blended in different amounts to prove the percentage of plastic limit. Then, the limit tests were carried out on the prepared mixtures. The strength of the samples obtained by using reusable material was determined with the California Bearing Ratio (CBR) test. According to the obtained results, it was observed that the usage of scoria wastes as stabilization material in the subbase layer of flexible pavements is appropriate. Moreover, mechanical stabilization with scoria wastes has positive impact in increasing of the mechanical properties of the new mixed composite material.