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Keywords: Ayatollahi
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Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2009, October 29–31, 2009
Paper Number: ISRM-EUROCK-2009-030
... in Figure 2, benefits from CCNBD s advantages and also has a much easier specimen- preparation procedure. This specimen is consisted of a disc with a central hole in which, a double cen- tre crack is introduced from the surface of the hole by simply using a thin saw blade (Ayatollahi et al., 2008). Studies...

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