Study of Dominant Factors Affecting Cerchar Abrasivity Index

The Cerchar abrasion index is commonly used to represent rock abrasion for estimation of bit life and wear in various mining and tunneling applications. Although the test is simple and fast, there are some discrepancies in the test results related to the equipment used, condition of the rock surface...

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Bibliographic Details
Published in:Rock mechanics and rock engineering 2014-09, Vol.47 (5), p.1905-1919
Main Authors: Rostami, Jamal, Ghasemi, Amireza, Alavi Gharahbagh, Ehsan, Dogruoz, Cihan, Dahl, Filip
Format: Article
Language:English
Subjects:
Abrasion
Abrasion resistance
Abrasives
Applied sciences
Buildings. Public works
Civil Engineering
Conduction
Earth and Environmental Science
Earth Sciences
Exact sciences and technology
Geophysics/Geodesy
Geotechnics
Hardness
Measurements. Technique of testing
Original Paper
Repeatability
Reproducibility
Rock
Rock mechanics
Rocks
Soil investigations. Testing
Strength of materials (elasticity, plasticity, buckling, etc.)
Structural analysis. Stresses
Wear
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Summary:The Cerchar abrasion index is commonly used to represent rock abrasion for estimation of bit life and wear in various mining and tunneling applications. Although the test is simple and fast, there are some discrepancies in the test results related to the equipment used, condition of the rock surface, operator skills, and procedures used in conducting and measuring the wear surface. This paper focuses on the background of the test and examines the influence of various parameters on Cerchar testing including pin hardness, surface condition of specimens, petrographical and geomechanical properties, test speed, applied load, and method of measuring wear surface. Results of Cerchar tests on a set of rock specimens performed at different laboratories are presented to examine repeatability of the tests. In addition, the preliminary results of testing with a new device as a potential alternative testing system for rock abrasivity measurement are discussed.
ISSN:0723-2632
1434-453X
DOI:10.1007/s00603-013-0487-3