Influence of Cyclic Wetting Drying on Collapse Behaviour of Compacted Residual Soil |
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| Authors: | Sudhakar M Rao K Revanasiddappa |
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| Institution: | (1) Department of Civil Engineering, Indian Institute of Science, Bangalore, 560 012, India;(2) Department of Civil Engineering, BDT College of Engineering, Kuvempu University, Davanagere, 577004, Karnataka, India |
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| Abstract: | The climatic zones where residual soils occur are often characterized by alternate wet and dry seasons. Laboratory studies
of earlier workers have established that the alternate wetting and drying process affects the swell-shrink potentials, water
content, void ratio and particle cementation of expansive soils. The influence of cyclic wetting and drying on the collapse
behaviour of residual soils has not been examined. This paper examines the influence of alternate wetting and drying on the
collapse behaviour of compacted residual soil specimens from Bangalore District. Results of such a study are useful in anticipating
changes in collapse behaviour of compacted residual soil fills. Experimental results indicated that the cyclic wetting and
drying process increased the degree of expansiveness of the residual soils and reduced their collapse tendency. Changes in
the swell/collapse behaviour of compacted residual soil specimens from wetting drying effects are attributed to reduction
in water content, void ratio and possible growth of cementation bonds. |
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| Keywords: | collapse residual soils swell wetting and drying |
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