Determining Crack Aperture Distribution in Rocks Using the C-14-PMMA Autoradiographic Method : Experiments and Simulations

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Bonnet , M , Sardini , P , Billon , S , Siitari-Kauppi , M , Kuva , J , Fonteneau , L & Caner , L 2020 , ' Determining Crack Aperture Distribution in Rocks Using the C-14-PMMA Autoradiographic Method : Experiments and Simulations ' , Journal of Geophysical Research : Solid Earth , vol. 125 , no. 1 , ARTN e2019JB018241 . https://doi.org/10.1029/2019JB018241

Title: Determining Crack Aperture Distribution in Rocks Using the C-14-PMMA Autoradiographic Method : Experiments and Simulations
Author: Bonnet, M.; Sardini, P.; Billon, S.; Siitari-Kauppi, M.; Kuva, J.; Fonteneau, L.; Caner, L.
Contributor: University of Helsinki, Department of Chemistry
Date: 2020-01
Language: eng
Number of pages: 16
Belongs to series: Journal of Geophysical Research : Solid Earth
ISSN: 2169-9313
URI: http://hdl.handle.net/10138/317196
Abstract: Because cracks control the global mechanical and transport properties of crystalline rocks, it is of a crucial importance to suitably determine their aperture distribution, which evolves through alteration processes and rock weathering. Due to the high variability of crack networks in rocks, a multiscale approach is needed. The C-14-PMMA (polymethylmethacrylate) method was developed to determine crack apertures using a set of artificial crack samples with different controlled apertures and tilt angles and also using Monte Carlo simulations. The experiments and simulations show the same result: the estimation of apparent aperture w(A) was successful regardless of tilt angle, even if the estimates are less accurate for low tilt angles (
Subject: FLUID-FLOW
SOLUTE TRANSPORT
CRYSTALLINE ROCK
FRACTURED MEDIA
PORE-SPACE
IMPREGNATION
POROSITY
MATRIX
PMMA
EVOLUTION
1171 Geosciences
116 Chemical sciences
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