Putra, Andius Dasa and Kikumoto, Mamoru (2017) Weathering-induced deformation of geomaterials derived from weakrocks. ARPN Journal of Engineering and Applied Sciences, 12 (12). pp. 3858-3868. ISSN 1819-6608

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Abstract

This paper investigates the slaking behaviour of several kinds of crushed mudstone and its mechanical consequences using a comprehensive set of experimental data obtained through accelerated 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 XRD (X-ray diffraction) analysis and scanning electron microscopy (SEM) 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, SEM, XRD, particle size distribution, mudstones.

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:	07 Nov 2019 03:16
Last Modified:	07 Nov 2019 03:16
URI:	http://repository.lppm.unila.ac.id/id/eprint/15813

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