Experimental analysis to evaluate the effectiveness of lime and non-traditional stabilizers on subgrade stabilization of a road

A. Mosadegh, O. Farzaneh

In the proceedings of: GeoManitoba 2012: 65th Canadian Geotechnical Conference

Session: M2D - Transportation Geotechnique

ABSTRACT: Soil stabilization techniques for civil engineering applications are currently a common practice for road performance improvement. During the past few years, in addition to traditional stabilizers, chemical and mineral substances have been produced and used for soil modification. New development of such material makes it necessary to evaluate their effectiveness in any special project. The present study compares the effectiveness of lime and non-traditional treatment amendments on the properties of subgrade soil of KermanZangi`abad, located in southeast of Iran. Non-traditional treatment agents have been used are commercially called RRP, as ionic treatment agents, ZAM I and ZAM II, classified as polymers. The experimental study includes evaluation of the main index properties of the soil, Atterberg limits, pH, swelling potential, CBR, unconfined compressive test (UC) and scanning electron microscopy (SEM). Results of unconfined compressive tests after 28-day curing period indicates that the maximum strength was obtained by adding 2% lime, while various dose rates of RRP and polymers at different curing times had no significant effect on the UC strength of the soil. Based on the results from swelling potential tests and SEM observation, formation of crystalline mineral namely, ettringite, seems improbable in the process of lime stabilization in the soil matrix.

RÉSUMÉ: Les techniques de traitement des sols sont actuellement une pratique courante d'amélioration des performances routières. Au cours des dernières années, des agents chimiques et minéraux ont été produits et utilisés pour la modification des sols. Le développement de ces nouveaux pour chaque projet. les proprietiés de la couche de forme de KermanZangi`abad, située dans le sud-traditionnels utlisés se nomment RRP, substance ionique, ZAM I et ZAM II et sont classés dans la catégorie des polymères. Cette étude expérimentale a consisté à évaluer les principales propriétés du sol, telles que les limites d'Atterberg, le pH, Les résultats de résistance des sols en compression simple après 28 jours de cure indiquent que la résistance maximale a été obtenue pour des éprouvettes traités à la chaux (2%), tandis que les différents dosages en PPR et en polymères réalisés à différentes conditions de cures n'avaient aucun effet significatif sur la résistance du sol. Les résultats obtenus lor

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Cite this article:
A. Mosadegh; O. Farzaneh (2012) Experimental analysis to evaluate the effectiveness of lime and non-traditional stabilizers on subgrade stabilization of a road in GEO2012. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Paper133,author = A. Mosadegh; O. Farzaneh,title = Experimental analysis to evaluate the effectiveness of lime and non-traditional stabilizers on subgrade stabilization of a road,year = 2012}