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Evaluation of shear strength of rock joints subjected to cyclic loading

✍ Scribed by M.K Jafari; K Amini Hosseini; F Pellet; M Boulon; O Buzzi

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
667 KB
Volume
23
Category
Article
ISSN
0267-7261

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✦ Synopsis

Variation of the shear strength of rock joints due to cyclic loadings is studied in the present paper. Identical joint surfaces were prepared using a developed moulding method with special mortar and shear tests were performed on these samples under both static and cyclic loading conditions. Different levels of shear displacement were applied on the samples to study joint behaviour before and during considerable relative shear displacement. It was found that the shear strength of joints is related to rate of displacement (shearing velocity), number of loading cycles and stress amplitude. Finally, based on the experimental results, mathematical models were developed for evaluation of shear strength in cyclic loading conditions.

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## Abstract The present study evaluated the long‐term microtensile bond strength of collagen‐depleted dentin followed by cyclic loading. Bovine flat, midcoronal dentin received one of the following surface treatments: acid‐etch or acid‐etched + 5% NaOCl for 2 min. The teeth were restored with Singl