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saw cut joints

French translation: sections de la diaclase découpée à la scie

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:saw cut joints
French translation:sections de la diaclase découpée à la scie
Entered by: FX Fraipont (X)

07:19 Aug 5, 2011
English to French translations [PRO]
Tech/Engineering - Geology / Géotechnique- diagraphie
English term or phrase: saw cut joints
Shear tests on artificial saw cut joints
Christophe M.
Belgium
Local time: 06:27
sections de la diaclase découpée à la scie
Explanation:
pour études du cisaillement en laboratoire

"Crawford and Curran (Ref. 3) studied the effects of relative velocity on the shear resistance of rock discontinuities. A servo-controlled dynamic direct shear machine was developed for the experimental program. The machine has independently controlled horizontal and vertical actuators. Artificial saw cut joints in four rock types, approximately 200 mm square, were lapped with silicon carbide grit and tested under dry conditions. The samples were displaced at various shear velocities under constant normal loads. It was found that, beyond a critical threshold velocity, the shear strength of the discontinuities changed with increasing velocity. The shear strength of harder rocks was found to decrease, and the shear resistance of softer rocks was found to increase, varying approximately linearly with the logarithm of velocity. An example for a hard rock is shown in Figure 1. Here, the shear strength at a given velocity is normalized with respect to the strength at a very low shearing velocity.For all rock types studied except one, the behavior was found to be approximately independent of normal stress."
http://www.iitk.ac.in/nicee/wcee/article/8_vol3_437.pdf
Selected response from:

FX Fraipont (X)
Belgium
Local time: 06:27
Grading comment
merci
4 KudoZ points were awarded for this answer



Summary of answers provided
4sections de la diaclase découpée à la scie
FX Fraipont (X)


  

Answers


46 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
sections de la diaclase découpée à la scie


Explanation:
pour études du cisaillement en laboratoire

"Crawford and Curran (Ref. 3) studied the effects of relative velocity on the shear resistance of rock discontinuities. A servo-controlled dynamic direct shear machine was developed for the experimental program. The machine has independently controlled horizontal and vertical actuators. Artificial saw cut joints in four rock types, approximately 200 mm square, were lapped with silicon carbide grit and tested under dry conditions. The samples were displaced at various shear velocities under constant normal loads. It was found that, beyond a critical threshold velocity, the shear strength of the discontinuities changed with increasing velocity. The shear strength of harder rocks was found to decrease, and the shear resistance of softer rocks was found to increase, varying approximately linearly with the logarithm of velocity. An example for a hard rock is shown in Figure 1. Here, the shear strength at a given velocity is normalized with respect to the strength at a very low shearing velocity.For all rock types studied except one, the behavior was found to be approximately independent of normal stress."
http://www.iitk.ac.in/nicee/wcee/article/8_vol3_437.pdf

FX Fraipont (X)
Belgium
Local time: 06:27
Native speaker of: Native in FrenchFrench
PRO pts in category: 150
Grading comment
merci
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