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Development of a Large Consolidometer-Permeameter Apparatus for Testing Soft Soils
The development of a large consolidometer-permeameter apparatus (CPA) to measure the 1-D compressibility and hydraulic conductivity k, value of soft soils, and in particular peat material, over low to medium stress levels is presented. The k value is measured directly under low Reynolds Number flow conditions. Proving tests conducted on undisturbed Sphagnum peat showed that test specimens (250–280 mm in length; 152-mm in diameter; aspect ratio of 1:0.5–1:0.6), which had been fitted with a lubricated membrane in the CPA floating-ring setup, experienced practically identical levels of compressibility as recorded over the same stress range by a conventional oedometer apparatus (aspect ratio of 1:4.0). However, the advantage of the CPA is that the k values measured are for a larger specimen size (mini-structural scale), which is more representative of field conditions.
Development of a Large Consolidometer-Permeameter Apparatus for Testing Soft Soils
The development of a large consolidometer-permeameter apparatus (CPA) to measure the 1-D compressibility and hydraulic conductivity k, value of soft soils, and in particular peat material, over low to medium stress levels is presented. The k value is measured directly under low Reynolds Number flow conditions. Proving tests conducted on undisturbed Sphagnum peat showed that test specimens (250–280 mm in length; 152-mm in diameter; aspect ratio of 1:0.5–1:0.6), which had been fitted with a lubricated membrane in the CPA floating-ring setup, experienced practically identical levels of compressibility as recorded over the same stress range by a conventional oedometer apparatus (aspect ratio of 1:4.0). However, the advantage of the CPA is that the k values measured are for a larger specimen size (mini-structural scale), which is more representative of field conditions.
Development of a Large Consolidometer-Permeameter Apparatus for Testing Soft Soils
O'Kelly, Brendan C. (author)
GeoCongress 2008 ; 2008 ; New Orleans, Louisiana, United States
GeoCongress 2008 ; 60-67
2008-03-07
Conference paper
Electronic Resource
English
Development of a Large Consolidometer-Permeameter Apparatus for Testing Soft Soils
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