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Fig. 6
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Vue de l’anneau de scellement et de roche après trois essais effectués sur des boulons HA25. De gauche à droite : 10 ; 5 et 1,2 MPa.
Aspect of the grout and rock annulii after three pull-out tests conducted on HA25 rockbolts. From left to right: 10; 5 and 1.2 MPa.
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