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Article: The dynamic evolution of compaction bands in highly porous carbonates: the role of local heterogeneity for nucleation and propagation

TitleThe dynamic evolution of compaction bands in highly porous carbonates: the role of local heterogeneity for nucleation and propagation
Authors
KeywordsCompaction bands
Image processing
Digital image correlation
Time series analysis
Microstructure
Issue Date2020
PublisherSpringerOpen. The Journal's web site is located at https://progearthplanetsci.springeropen.com/
Citation
Progress in Earth and Planetary Science, 2020, v. 7, article no. 28 How to Cite?
AbstractThe formation of compaction bands in porous brittle rocks such as sandstones and carbonates has a significant impact on the localization mechanisms preceding earth and planetary surface instabilities such as earthquakes, landslides, and plate boundary faults. The micromechanics underpinning the dynamics of the formation of compaction bands and its effect on alteration of pore fluid pathways are not yet fully understood. The current study seeks to understand the mechanical properties of compaction in highly porous carbonate at micro- and macro-scale using time-lapse triaxial experiments in an X-ray transparent flow and deformation cell. Images were obtained with increasing axial strain levels using X-ray computed tomography allowing mapping of the evolution of internal structures. In addition to the X-ray analysis, digital image correlation (DIC) was used to quantify the evolution of strain and precisely identify the nucleation mechanism of compaction bands and its dynamics. The effect of friction on the boundary platens was shown to be minimal as evidenced by shear strain obtained from DIC analysis. This comprehensive analysis allowed assessment of the role of heterogeneity for the initiation of compaction bands. Local regions with high porosity provide the initial seeds for discrete compaction followed by the nucleation of traveling waves that lead to diffuse growth of the compaction zone. This interesting phenomenon is expected to be a fundamental mode of compressional deformation in porous brittle media where discrete, often periodic, deformation bands are observed on compaction.
Persistent Identifierhttp://hdl.handle.net/10722/286679
ISSN
2019 Impact Factor: 2.508
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, X-
dc.contributor.authorRoshan, H-
dc.contributor.authorLv, A-
dc.contributor.authorHu, M-
dc.contributor.authorRegenauer-Lieb, K-
dc.date.accessioned2020-09-04T13:28:55Z-
dc.date.available2020-09-04T13:28:55Z-
dc.date.issued2020-
dc.identifier.citationProgress in Earth and Planetary Science, 2020, v. 7, article no. 28-
dc.identifier.issn2197-4284-
dc.identifier.urihttp://hdl.handle.net/10722/286679-
dc.description.abstractThe formation of compaction bands in porous brittle rocks such as sandstones and carbonates has a significant impact on the localization mechanisms preceding earth and planetary surface instabilities such as earthquakes, landslides, and plate boundary faults. The micromechanics underpinning the dynamics of the formation of compaction bands and its effect on alteration of pore fluid pathways are not yet fully understood. The current study seeks to understand the mechanical properties of compaction in highly porous carbonate at micro- and macro-scale using time-lapse triaxial experiments in an X-ray transparent flow and deformation cell. Images were obtained with increasing axial strain levels using X-ray computed tomography allowing mapping of the evolution of internal structures. In addition to the X-ray analysis, digital image correlation (DIC) was used to quantify the evolution of strain and precisely identify the nucleation mechanism of compaction bands and its dynamics. The effect of friction on the boundary platens was shown to be minimal as evidenced by shear strain obtained from DIC analysis. This comprehensive analysis allowed assessment of the role of heterogeneity for the initiation of compaction bands. Local regions with high porosity provide the initial seeds for discrete compaction followed by the nucleation of traveling waves that lead to diffuse growth of the compaction zone. This interesting phenomenon is expected to be a fundamental mode of compressional deformation in porous brittle media where discrete, often periodic, deformation bands are observed on compaction.-
dc.languageeng-
dc.publisherSpringerOpen. The Journal's web site is located at https://progearthplanetsci.springeropen.com/-
dc.relation.ispartofProgress in Earth and Planetary Science-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectCompaction bands-
dc.subjectImage processing-
dc.subjectDigital image correlation-
dc.subjectTime series analysis-
dc.subjectMicrostructure-
dc.titleThe dynamic evolution of compaction bands in highly porous carbonates: the role of local heterogeneity for nucleation and propagation-
dc.typeArticle-
dc.identifier.emailHu, M: mmhu@hku.hk-
dc.identifier.authorityHu, M=rp02544-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1186/s40645-020-00344-0-
dc.identifier.scopuseid_2-s2.0-85086844143-
dc.identifier.hkuros314118-
dc.identifier.volume7-
dc.identifier.spagearticle no. 28-
dc.identifier.epagearticle no. 28-
dc.identifier.isiWOS:000552417400001-
dc.publisher.placeGermany-

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