United States Department of Transportation
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Sustainable stabilization of sulfate-bearing soils with expansive soil-rubber technology.
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2013-03-01
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[PDF-755.49 KB]
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Abstract:The beneficial use of scrap tire rubber mixed with expansive soils is of interest to civil engineering
applications since the swell percent and the swell pressure can be potentially reduced with no deleterious
effect to the shear strength of the mixture. The two main objectives of this research were (1) to propose a
new subgrade soil stabilization protocol to allow CDOT to rely upon an alternative stabilization method that
is not subject to the typical problems associated with calcium-based stabilization of sulfate-rich soils, and
(2) to develop a new database of MEPDG parameters for local soil samples obtained from CDOT and to
provide advanced testing and analysis of the stiffness degradation of these materials.
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