Predicting the strength, density, and porosity of rocks from roll crusher tests

KAHRAMAN S., Ince I., Rostami M., Dibavar B.

Journal of the Southern African Institute of Mining and Metallurgy, vol.124, no.2, pp.53-58, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 124 Issue: 2
  • Publication Date: 2024
  • Doi Number: 10.17159/2411-9717/1528/2024
  • Journal Name: Journal of the Southern African Institute of Mining and Metallurgy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Compendex, Metadex, Directory of Open Access Journals, Civil Engineering Abstracts
  • Page Numbers: pp.53-58
  • Keywords: crushability index, rock properties, roll crusher
  • Hacettepe University Affiliated: Yes

Abstract

The density, porosity, and strength of rocks are fundamental in the design of geo-engineering projects. Determining these properties requires the preparation of smooth core samples, which is usually impossible for soft rocks. Besides, only fragmented samples may be available in some projects. A method for predicting rock properties from rock particles such as drilling debris would therefore be useful. This study was undertaken to develop prediction equations for compressive strength (UCS), tensile strength (BTS), density, and porosity values from the crushability index (CI) obtained from rock fragments. The results showed that UCS, BTS, density, and porosity were strongly correlated with the CI. The physical characteristics and strength of rocks may be predicted with the help of the derived equations. The CI test is a valuable tool for estimating rock properties in drilling projects and in situations where core specimens are not available.