Kikumoto, Mamoru and Putra, Andius Dasa and Fukuda, Takumi (2016) Slaking and Deformation Behaviour. Slaking and Defromation Behaviour, 6 (9). pp. 771-785. ISSN 0016-8505

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Abstract

Slaking is a mechanical–hydraulic process in which geomaterials disintegrate or crumble when subjected towetting and drying cycles; mudstone is particularly susceptible to this process. This paper explores the slaking behaviour of geomaterials derived from several kinds of mudstone and the mechanicalconsequencesusingacomprehensivesetofexperimentaldataobtainedthroughaccelerated slaking tests and newly developed one-dimensional compression slaking tests. These data confirm that slaking in crushed mudstone is accompanied by a variation in the particle size distribution during wetting and drying cycles, and a variation in grading results in an irreversible change in mechanical characteristics, such as the reference packing density. Significant compression is also found to occur without any change in effective confining stress. The results of X-ray fluorescence analysis, X-ray diffraction analysis and scanning electron microscopy are also used to elucidate the effects of mineralogy and particle texture on the slaking characteristics of crushed mudstone. Finally, it is also mentioned that constitutive modelling can take slaking into consideration by describing the evolution of an appropriate grading index due to slaking, and then linking this to reference packing density. KEYWORDS: compressibility; laboratory tests; microscopy; mineralogy; particle crushing/crushability; soft rocks

Item Type:	Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Fakultas Teknik (FT) > Prodi Teknik Sipil
Depositing User:	Dr Andius Dasa Putra
Date Deposited:	24 May 2019 07:16
Last Modified:	24 May 2019 07:16
URI:	http://repository.lppm.unila.ac.id/id/eprint/13206

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