Swell- Shrink Behavior of Expansive Soils under Different Surcharge and Water Qualities

Document Type : Research Paper

Authors

1 Ph.D candidate of water structures, Irrigation and Reclamation department, college of agricultural and natural resources, University of Tehran

2 Assistant Professor, Irrigation and Reclamation department, college of agricultural and natural resources, University of Tehran

3 Instructor, Irrigation and Reclamation department, college of agricultural and natural resources, University of Tehran

Abstract

Expansive soils are of the kind the volume of which will be changed to extremes by being exposed to varying conditions of moisture. This volume change is a serious menace to structures built on these types of soils. Throughout the present research the potential of volume change in these soils was investigated when exposed to the phenomenon of wetting and drying. For the purpose, samples of a statically compacted soil were positioned in a consolidation test set, and tests conducted under two surcharges of 10 and 20 KPa and along with two kinds of water quality (pure and acid). Results showed equal swell and shrinkage occurring, following a repetition of about five test cycles. Furthermore, changing water quality (to acid) was found as an effective element in decreasing of the swelling potential.

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References

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Iranian Journal of Soil and Water Research
Volume 45, Issue 3 - Serial Number 3
December 2014
Pages 309-315

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