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Bulletin of Engineering Geology and the Environment

, Volume 78, Issue 7, pp 5301–5310 | Cite as

Uniaxial compressive strength measurements of limestone plugs and cores: a size comparison and X-ray CT study

  • Jeroen F. Van StappenEmail author
  • Tim De Kock
  • Geert De Schutter
  • Veerle Cnudde
Original Paper
  • 299 Downloads

Abstract

In many geo-engineering fields, the uniaxial compressive strength (UCS) of a rock material is the parameter most commonly used to define a rock’s mechanical strength. Several international standards have been developed for determining this value, which require the tested material to have certain minimum dimensions and shapes. In many applications, however, sample material is limited. Therefore, this study investigates the possibility of determining the UCS on rock plugs smaller than the minimum dimensions in the most common standards. The materials investigated are four different depositional limestones from the Paris Basin which are often used as building material in France and Belgium. Results from UCS tests in a small-scale uniaxial compressive device are compared to standard-sized tests according to the governing international standards. The results show that the strength determined on the small-scale plugs is very similar to the UCS determined on standard-sized cores. Using high-resolution X-ray computed tomography, it was possible to investigate the failure modes of the small-scale plugs and link them to their internal rock fabric. Obtaining a three-dimensional visualization provides valuable insights into the origin of the variability in the UCS measurements in small-scale plugs.

Graphical Abstract

Keywords

Uniaxial compressive strength High-resolution X-ray tomography Building stones Downsizing Failure modes Limestone 

Notes

Acknowledgements

The Special Research Fund (BOF) at Ghent University is acknowledged for the finalizing PhD grant 01DI1316 for Jeroen Van Stappen. Tim De Kock is a postdoctoral fellow of the Research Foundation – Flanders (FWO) and acknowledges its support. FWO is also acknowledged for funding project G.0041.15 N which allowed the purchase of the uniaxial compressive device. For this, the Faculty Commission for Scientific Research (FCWO) at Ghent University is also acknowledged for its support.

Supplementary material

10064_2018_1448_MOESM1_ESM.docx (16 kb)
ESM 1 (DOCX 15 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.PProGRess – UGCT, Department of Geology, Faculty of SciencesGhent UniversityGhentBelgium
  2. 2.High Pressure and Temperature Laboratory, Department of Earth Sciences, Faculty of GeosciencesUtrecht UniversityUtrechtThe Netherlands
  3. 3.Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering and ArchitectureGhent UniversityGhentBelgium

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