Initial surmises from a field study of suction behaviour of tropical unsaturated residual soils
The generally unsaturated residual soils segment located above the groundwater table possess negative pore-water pressures. This amount of water content and resulting matric suction is an important geotechnical relationship for the unsaturated residual soil. This paper describes a field study that...
| Main Authors: | , , , |
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| Format: | Article |
| Published: |
Electronic Journal of Geotechnical Engineering
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/17998/ |
| Summary: | The generally unsaturated residual soils segment located above the groundwater table possess negative pore-water pressures. This amount of water content and resulting matric suction is an important geotechnical relationship for the unsaturated residual soil. This paper describes a
field study that examined the water content and matric suction in the unsaturated weathered residual soil over one of the commonly found soil/rock types constituting the tropical Malaysian terrain i.e. residual soil over sandstones at various weathering grades. The soilwater
characteristic curve (SWCC) was found to be characterized by two distinct curves, a wetting (sorption) curve and a drying (desorption) curve, each showing distinctive water
retention propensity. Higher weathering grades appear to have a higher suction for a given water content. |
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