Soil Stabilization using Lime-Activated Ground Granulated Blast Furnace Slag


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Title: Soil Stabilization using Lime-Activated Ground Granulated Blast Furnace Slag

Author(s): D.D. Higgins, J.M. Kinuthia and S. Wild

Publication: Special Publication

Volume: 178


Appears on pages(s): 1057-1074

Keywords: blast furnace slag; expansion; lime; roads; stabilization; strength; sulfates.

Date: 6/1/1998

Soil stabilisation with cement or lime, is a well established technique for use in highway or foundation construction. Extensive laboratory investigations and a full-scale trial have been carried out to evaluate the performance of ground granulated blastfurnace slag (ggbs) in combination with lime, for stabilising soils. This paper reports the results of laboratory tests for strength and swelling, and also describes the full-scale trial. The applicability of lime / ggbs combinations has been demonstrated. In addition laboratory tests have shown a previously undemonstrated advantage where the incorporation of ggbs combats the deleterious swelling which can occur when sulphate-containing soils are stabilised with cement or lime.