Evolution of Large-Strain One-Dimensional Consolidation Test for Louisiana Marsh Soil
Publication: IFCEE 2021
ABSTRACT
In this paper, statistical analyses were conducted to understand the applicability and reliability of conventional consolidation tests on extremely soft dredged fill material. Of all the consolidated tests reviewed, specially designed and fabricated equipment was used to perform multiple one-dimensional consolidation tests on composite slurry samples prepared from the dredged borrow area. Data of over 30 consolidation tests were analyzed and assessed, and regression equations were proposed to estimate the compression index Cc. By comparing the proposed regression equations with the existing empirical equations, it was discovered that the compression index predicted by a simple linear equation considering the natural moisture content, initial void ratio, plastic limit, and liquid limit could sensibly assess the genuine soil compression index. In any case, the consolidation test on very soft dredged soils is time-consuming and work-intensive; it is likewise observed that the use of empirical equations recommended in this research results in a valuable tool to assess the compression index of the marine clayey soils used in the wetland recovery projects in coastal Louisiana.
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IFCEE 2021
Pages: 244 - 255
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© 2021 American Society of Civil Engineers.
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Published online: May 6, 2021
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