Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

Many developing countries have many unpaved roads that should be applied the optimal methods for improving the unpaved roads within the limited budget. With three clay-based road conditions in southeast Asia countries, four improvement methods are applied on the top of the unpaved roads and then the behaviour of the surface and underlayer of the treated road under the traffic loading are compared by numerical analysis based on the Mohr-coulomb model. In this study, effect of several methods to improve the unpaved roads is analysed by comparing the behaviour results of a numerical analysis considering traffic loading on the improved unpaved road conditions. Based on the limited analysis results, it would be confirmed that some improvement methods can obtain positive effect on the several clay-based unpaved roads. However, it could be possible to determine effective improvement methods after running laboratory tests using the raw materials of unpaved roads.