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| Titel: |
Collapsibility and Volume Change Behavior of Unsaturated Residual Soil |
| Auteur: |
Azlan A. Aziz Thamer Ahmed Mohammed Bujang B.K. Huat Choong Foong Heng |
| Verschenen in: |
American journal of environmental sciences |
| Paginering: | Jaargang 2 (2006) nr. 4 pagina's 161-166 |
| Jaar: |
2006 |
| Inhoud: |
Residual soils occur in most countries of the world but the greater areas and depths arenormally found in tropical humid areas. In these places, the soil forming processes are still very activeand the weathering development is much faster than the erosive factor. Most residual soil exhibit highsuctions for most of the year. The absence of positive pore water pressure except immediately afterrain, makes conventional soil mechanics for saturated soil not so relevant. Ignorance or lack ofunderstanding of the geotechnical behavior of soil in the partially or unsaturated state has caused a lotof damages to infrastructures, buildings and other structures. For instance, the collapsibility andvolume change of partially saturated soils in connection with the drying or wetting causes a lot ofdamage in foundation, roads and other structures. It is also observed that many shallow slope failuresinvolve a slumping (collapse) type of failure. As such, the development of extended soil mechanics,which embraces the soil in the unsaturated state or subjected to soil suction, is essential. This studyexamines the collapsibility and volume change behavior specifically of an unsaturated residual soilunder various levels of applied matric suction (ua-uw) and net mean stress (s-ua) in a predeterminedstress path. The volume change of the soil is found to be sensitive to both the applied matric suctionand net mean stress. The soil is found to exhibit a collapsibility behavior upon a reduction in appliedmatric suction at constant net mean stress. |
| Uitgever: |
Science Publications (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 7 gevonden artikelen
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