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Rehabilitation Of Medium Expansive Soil Using Cement Treatment

Submitted2011-07-12
Last Update2011-07-12
TitleRehabilitation Of Medium Expansive Soil Using Cement Treatment
Author(s)Author #1
Author title:
Name: Waddah S. Abdullah
Org: Department of Civil Engineering, JUST, Irbid, Jordan
Country:
Email: waddah@just.edu.jo

Author #2
Author title:
Name: Ahmed S. Alsharqi
Org: Jordan Engineers Association, Jordan
Country:
Email:

Other Author(s)
Contact AuthorAuthor #1
Alt Email: waddah@just.edu.jo
Telephone:
KeywordsExpansive soils, Cement, Swell potential, Hyperbolic model
AbstractProblematic soils such as swelling/shrinking soil are widespread in the Middle East and worldwide. This type of soil, upon wetting and drying, causes severe damage to structures built on such soil. Rehabilitation of swelling/shrinkage using cement treatment was studied in this work. Medium expansive soil (12 < PI < 24) was selected for the present investigation. Soil specimens were mixed with various percentages of cement contents (1%, 2%, 3% and 4%) and molded to a range of prescribed pre-wetting dry densities and moisture contents. It was found that 2% cement content cured for 28 days was sufficient to reduce the free swell percentage for medium expansive soil from as high as 7.4% to merely 0.4%. The potential swell pressure, however, was reduced from a damagingly high value (333 kPa) for the untreated soil to a tolerable value (20 kPa) for the same enhancement conditions. Swell potential versus time relationship for the natural and stabilized soil could be very accurately represented by a rectangular hyperbolic function.
Paperview paper 2160.pdf (716KB)

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