Coupled lithification and compaction in sedimentary rocks: A chemo-mechanical model based on breakage-damage theory

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Lithification is a chemical process that involves the precipitation of minerals from the pore fluid, thus affecting the pore structure and the mechanics of inter-granular contacts. In parallel with such process, grain crushing and cement fracture are basic drivers of long-term compaction. In the present study, a micromechanics-based constitutive model for granular rocks is proposed to account for the coupling between these chemical and mechanical processes. The goal is to take into account both chemical strengthening via particle cementation and mechanical degradation associated with grain crushing and bond damage. The main purpose of the model is to provide a tool that, based on simple information about the evolving microstructure of a granular rock, can be able to quantify the evolution of the strength of sedimentary rocks, as well as the alterations of their elastic domain.

Original languageEnglish (US)
Title of host publicationISRM Regional Symposium, EUROCK 2015
PublisherInternational Society for Rock Mechanics
Pages749-754
Number of pages6
ISBN (Print)9783950389814
StatePublished - Jan 1 2015
EventISRM Regional Symposium, EUROCK 2015 - Salzburg, Austria
Duration: Oct 7 2015Oct 10 2015

Publication series

NameISRM Regional Symposium, EUROCK 2015

Other

OtherISRM Regional Symposium, EUROCK 2015
CountryAustria
CitySalzburg
Period10/7/1510/10/15

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ASJC Scopus subject areas

  • Geophysics
  • Geotechnical Engineering and Engineering Geology

Cite this

Das, A., & Buscarnera, G. (2015). Coupled lithification and compaction in sedimentary rocks: A chemo-mechanical model based on breakage-damage theory. In ISRM Regional Symposium, EUROCK 2015 (pp. 749-754). (ISRM Regional Symposium, EUROCK 2015). International Society for Rock Mechanics.