Andius, Dasa Putra and Mamoru, Kikumoto (2016) Slaking of Mudstone and Its Mechanical Consequences in 1D Compression Condition. In: 50th U.S. Rock Mechanics/Geomechanics Symposium, 26-29 Juni 2016, Houston, Texas.

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Slaking of Mudstone and Its Mechanical Consequences in 1D Compression Condition.pdf

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Abstract

The slaking phenomenon of geo-materials derived from weak rocks such as mudstone or shale may cause the deformation of earth structures. Thus it should be properly considered in the process of design and construction. Previous researches indicated that slaking causes variation in particle size distribution and change in mechanical properties. However, mechanism of slaking phenomena and its mechanical consequence needs to be studied carefully. Therefore, investigation of slaking and deformation behavior through several laboratory tests was performed. In order to discuss the fundamental slaking phenomena, laboratory experiments such as ordinary acceleration slaking tests, X-Ray Fluorescence tests (XR-F) and Scanning Electron Microscopy (SEM) observation have been performed. Moreover, in order to observe the slaking phenomena and its effect on compression behavior, we modified one dimensional compression slaking test in which cyclic processes of wetting and drying is given. Kobe mudstone and Kakegawa mudstone were used to perform one-dimensional compression slaking test. The experimental results of one dimensional compression slaking tests showed that particle crushing phenomenon during the compressive stress contributes to increasing compressibility. The compressive slaking revealed that slaking under reaction stress cause the large compression even the mudstone specimens compacted to medium density. The study also suggested that it is possible to describe the slaking phenomenon in a similar way as the particle-crushing phenomenon using the scaler grading index that represents particle characteristics. Key words: Slaking, mudstone, particle size distribution, particle crushing, grading index

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik (FT) > Prodi Teknik Sipil
Depositing User: Dr Andius Dasa Putra
Date Deposited: 13 Oct 2022 01:18
Last Modified: 13 Oct 2022 01:18
URI: http://repository.lppm.unila.ac.id/id/eprint/45658

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