Investigation change trend of moisture and volume of unsaturated silty soil during consolidation

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 Assosiate Prof, Irrigation and Reclamation department, college of agricultural and natural resources, University of Tehran.

Abstract

In this research variation of moisture and volume of an unsaturated silty soil were investigated under different suctions through experimental tests in triaxial apparatus special for unsaturated soils. The tests were carried on specimens of silty soil that made by slurry method in modified triaxial cell (triaxial cell with doubled rings) under 5 suctions from 0 to 300 kPa. Applying the target suction have been done by axis translation technic and loading the specimen under constant suction was carried by using increment loading. The results show that preconsolidation pressure will increase by increasing suction. Furthermore according to the obtained results, creation of yielding curve (LC) in space of stress- suction is possible. Also investigation of variation in slope and intercept of normal compression line showed that variation of volume and moisture of soil is function of suction changes.

Keywords

References

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Iranian Journal of Soil and Water Research
Volume 48, Issue 1
April 2017
Pages 195-203

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