Investigating the microstructure of compacted crushed Callovo-Oxfordian argillite

  • Chao Sheng Tang
  • , Anh Minh Tang
  • , Yu Jun Cui
  • , Pierre Delage
  • , Bin Shi
  • , Christian Schroeder

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Some aspects of the macroscopic geotechnical behavior of compacted soils are highly related to their microstructure. This paper presents a qualitative and quantitative microstructure investigation of compacted samples made up of crushed Callovo-Oxfordian argillite. This material is considered as being possibly used as backfill material in radioactive waste disposal at great depth. Scanning electron microscopy and mercury intrusion porosimetry technique were employed to determine the fabric and pore size distribution properties of the samples. The results show that an increase of the compaction effort only results in the reduction of the inter-aggregates porosity. After wetting, the sample displays a relative homogenous microstructure with a decrease in the macropores population.

Original languageEnglish
Title of host publicationSoil Behavior and Geo-Micromechanics - Proceedings of the 2010 GeoShanghai International Conference
Pages186-191
Number of pages6
Edition200 GSP
DOIs
Publication statusPublished - 6 Sept 2010
Externally publishedYes
Event2010 GeoShanghai International Conference - Soil Behavior and Geo-Micromechanics - Shanghai, China
Duration: 3 Jun 20105 Jun 2010

Publication series

NameGeotechnical Special Publication
Number200 GSP
ISSN (Print)0895-0563

Conference

Conference2010 GeoShanghai International Conference - Soil Behavior and Geo-Micromechanics
Country/TerritoryChina
CityShanghai
Period3/06/105/06/10

Keywords

  • Compacted soils
  • Microstructures

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