AI SearchConsolidation properties of soft and stiff Bangkok subsoils related to land subsidence
Call Number: AIT Thesis no.GT-79-18 Material type:
SeriesSeries: Asian Institute of Technology. Thesis ; no. GT-79-18Publication details: Bangkok : Asian Institute of Technology, 1980Description: v, 199 pSubject(s): Dissertation note: Thesis (M.Eng.) - Asian Institute of Technology, 1980 Summary: In order to investigate the consolidation characteristics of Bangkok clays for subsidence analysis, ·clays which exist at great depth were taken from bore hole and tested by means of the high pressure consolidometer. It was found that, generally, the e-log Ov curve for stiff clay shows a smooth shape and the point of the maximum past pressure is difficult to define. Considerable discrepancies often exist between measured consolidation behavior in the field and that predicted by Terzaghi theory. Soft clay was tested by using Rowe oedometer. The investigation showed that in the normally consolidated range, agreement exists between the rate of pore pressure dissipation and the settlement only for the load increment ratios of 1:0.5 and 1:1 tests. For a small load increment, i.e., 1 t/m2 and 2 t/m2 , it was found that there is a very consistent relationship between the dissipation of excess pore pressure and the development of settlement after ,the consolidation pressure exceeds the critical pressure, and it was also found that the settlement of the soil sample continues after the pore pressure has dissipated completely.
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A thesis submitted in partial: fulfillment of the requirement for the degree of Master of Engineering, School of Engineering and Technology
Thesis (M.Eng.) - Asian Institute of Technology, 1980
In order to investigate the consolidation characteristics of Bangkok clays for subsidence analysis, ·clays which exist at great depth were taken from bore hole and tested by means of the high pressure consolidometer. It was found that, generally, the e-log Ov curve for stiff clay shows a smooth shape and the point of the maximum past pressure is difficult to define. Considerable discrepancies often exist between measured consolidation behavior in the field and that predicted by Terzaghi theory. Soft clay was tested by using Rowe oedometer. The investigation showed that in the normally consolidated range, agreement exists between the rate of pore pressure dissipation and the settlement only for the load increment ratios of 1:0.5 and 1:1 tests. For a small load increment, i.e., 1 t/m2 and 2 t/m2 , it was found that there is a very consistent relationship between the dissipation of excess pore pressure and the development of settlement after ,the consolidation pressure exceeds the critical pressure, and it was also found that the settlement of the soil sample continues after the pore pressure has dissipated completely.
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