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Rock Mechanics and Rock Engineering
Published in: Rock Mechanics and Rock Engineering 7/2016

13-10-2015 | Technical Note

Study on the Correlations Between Abrasiveness and Mechanical Properties of Rocks Combining with the Microstructure Characteristic

Authors: Jianming He, Shouding Li, Xiao Li, Xu Wang, Jingyun Guo

Published in: Rock Mechanics and Rock Engineering | Issue 7/2016

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Excerpt

Rock abrasivity has become one of the necessary parameters for mechanical excavation of rock in the tunnelling industry (Wijk 1992; Hassanpour et al. 2011). The Cerchar abrasiveness test is widely used to assess the rock abrasivity. The test features a steel pin of specified shape and quality that is scratched over 10 mm of the specimen’s surface. The pin has a sharp conical point with cone angle of 90°. A static force of 70 N is loaded on the pin and the test is carried out by moving the steel pin at a prescribed velocity on the testing surface. The Cerchar abrasiveness index (CAI) is calculated by multiplying the mean value of the wear flats stated in units of 0.01 mm by 10. The testing velocity is reduced from 10 mm/s of “Cerchar apparatus” to 1 mm/s of “West apparatus” to accommodate the controllability of the testing velocity (West 1981, 1989; Michael et al. 2014). …
previous article Relationships Between Abrasion/Degradation of Aggregate Evaluated from Various Tests and the Effect of Saturation
next article Abrasiveness of Common Rocks in Hong Kong

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Literature
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Amirreza G (2010) Study of Cerchar abrasivity index and potential modifications for more consistent measurement of rock abrasion. Dissertation, The Pennsylvania State University
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Hassanpour J, Rostami J, Zhao J (2011) A new hard rock TBM performance prediction model for project planning. Tunn Undergr Space Technol 26:595–603CrossRef
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Michael A, Olgay Y, Filip D et al (2014) ISRM suggested method for determining the abrasivity of rock by the Cerchar abrasivity test. Rock Mech Rock Eng 47:261–266CrossRef
Mohammad TH, Hossein M, Jamal R (2014) Continuous monitoring of pin tip wear and penetration into rock surface using a new Cerchar abrasivity testing device. Rock Mech Rock Eng 47:689–701CrossRef
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Thuro K (1997) Prediction of drillability in hard rock tunneling by drilling and blasting. In: Golser J, Hinkel WJ, Schubert W (eds) Tunnels for people, 1st edn. CRC Press, Boca Raton, pp 103–108
West G (1981) A review of rock abrasiveness testing for tunneling. In: Proceedings of the international symposium on weak rock, Tokyo, pp 585–594
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West G (1989) Technical note–rock abrasiveness testing for tunnelling. Int J Rock Mech Min Sci Geomech Abstr 26(2):151–160CrossRef
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Metadata
Title
Study on the Correlations Between Abrasiveness and Mechanical Properties of Rocks Combining with the Microstructure Characteristic
Authors
Jianming He
Shouding Li
Xiao Li
Xu Wang
Jingyun Guo
Publication date
13-10-2015
Publisher
Springer Vienna
Published in
Rock Mechanics and Rock Engineering / Issue 7/2016
Print ISSN: 0723-2632
Electronic ISSN: 1434-453X
DOI
https://doi.org/10.1007/s00603-015-0862-3

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