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Behavior of Chemically Stabilized Sulfate-Rich Expansive Clay under Quick-Aging Environment
High-plasticity, sulfate-rich expansive clay is readily available as subgrade material in northeast Texas. In this work, a series of unconfined compression, UU triaxial and resonant column tests were conducted on chemically stabilized specimens of sulfate-rich expansive clay from Arlington, Texas, after being subjected to repeated wetting-drying (w-d) in the laboratory. Stabilization methods include type V cement, class F fly ash, and lime with polypropylene fibers. Treated specimens were cured for 7 days and then subjected from 0 to 32 w-d cycles prior to testing. A w-d cycle consisted of 12-hour potable-water bath followed by 12-hour oven drying at 140 degrees Fahrenheit. Custom made w-d chambers allows monitoring of 1-D swell-shrink response. Digital imaging and SEM tests were also conducted to substantiate those findings from UC, UU, and RC tests. A 5% dosage of type V cement appears to yield best overall performance.
Behavior of Chemically Stabilized Sulfate-Rich Expansive Clay under Quick-Aging Environment
High-plasticity, sulfate-rich expansive clay is readily available as subgrade material in northeast Texas. In this work, a series of unconfined compression, UU triaxial and resonant column tests were conducted on chemically stabilized specimens of sulfate-rich expansive clay from Arlington, Texas, after being subjected to repeated wetting-drying (w-d) in the laboratory. Stabilization methods include type V cement, class F fly ash, and lime with polypropylene fibers. Treated specimens were cured for 7 days and then subjected from 0 to 32 w-d cycles prior to testing. A w-d cycle consisted of 12-hour potable-water bath followed by 12-hour oven drying at 140 degrees Fahrenheit. Custom made w-d chambers allows monitoring of 1-D swell-shrink response. Digital imaging and SEM tests were also conducted to substantiate those findings from UC, UU, and RC tests. A 5% dosage of type V cement appears to yield best overall performance.
Behavior of Chemically Stabilized Sulfate-Rich Expansive Clay under Quick-Aging Environment
Hoyos, L. R. (author) / Laikram, A. (author) / Puppala, A. (author)
GeoShanghai International Conference 2006 ; 2006 ; Shanghai, China
2006-05-11
Conference paper
Electronic Resource
English
Behavior of Chemically Stabilized Sulfate-Rich Expansive Subgrade Clay under Quick-Aging Environment
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Effect of sulfate on chemically treated expansive clay
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Errata for "Dynamic Properties of Chemically Stabilized Sulfate Rich Clay"
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