1. Study of Dominant Factors Affecting Cerchar Abrasivity Index
- Author
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Ehsan Alavi Gharahbagh, Filip Dahl, Cihan Dogruoz, Jamal Rostami, and Amireza Ghasemi
- Subjects
Engineering ,business.industry ,Cerchar abrasivity index ,Geology ,Repeatability ,Bit life ,Geotechnical Engineering and Engineering Geology ,Rock abrasion ,Abrasion (geology) ,Wear ,Geotechnical engineering ,New device ,Cerchar test ,business ,Civil and Structural Engineering - Abstract
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. © 2013 Springer-Verlag Wien.
- Published
- 2013
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