In this study, it was aimed to improve the existing poor local soil without excavating it using mixed stabilization method for soil stabilization. For this purpose, lime and cement which are commonly used as conventional stabilization additives were used along with Consolid444 + Solidry additives which are studied as alternative soil stabilization additives, and the results from the tests were compared. In this study, material from Isparta Daridere being used by Isparta Public Waterworks Administration to achieve water and liquid impermeability in dam constructions, filling works, etc. was used as poor soil material for the purpose of improving its bearing capacity. All additives added to Isparta Daridere natural soil material which is inappropriate to be used as a bearing in any road construction significantly increased the bearing capacity of this material and enabled it to be used as sub-foundation and foundation material in a road construction. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.