Alternative materials for the modification and stabilization of unstable subgrade soils
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1997-05-01
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By Heckel, Greg
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Abstract:This study examines two lime by-products and two fly ashes for treatment of unstable (CBR<6) subgrade soils. The treatment methods include both modification and stabilization. Modification is temporily enhancing subgrade stability to improve constructability. Stabilization is the construction of a permanent, high strength base material which is considered a part of the pavement structure. Test results presented in this study include the moisture-density relationships, bearing values, compressive strengths, swell potential, and plasticity index for treated soils and untreated soils.
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