Mechanical behavior of novel basalt fiber-reinforced polymer (BFRP) rock bolt

doi:10.19936/j.cnki.2096-8000.20221228.011

Abstract

Abstract: In this study, three types of BFRP cable rock bolt, namely single-tendon, parallel-tendon and twisted-tendon cable rock bolt were studied in terms of tensile, anchoring and pullout behavior. By using epoxy resin adhesive, the parallel-tendon cable had highest strength of 1 319 MPa. Owing to twisting of tendons, the tensile capacity and stiffness were reduced in twisted-tendon cable. The adoption of an anchor with inner cylinder and cone can ensure a failure mode of fiber fracture at free length. The anchoring efficiencies were larger than 97% in all groups. The parallel-tendon cable had highest pullout capacity. For pullout stiffness, however, the twisted-tendon cable was better than other cables.

Key words: basalt fiber-reinforced polymer (BFRP) rock bolt, tensile behavior, anchor, pullout test

CLC Number:

TB332

LUO Jin-biao, PENG Zhe-qi, WANG Xin, YAN Zong-xue, LIN Jing-hui, LIU Lang. Mechanical behavior of novel basalt fiber-reinforced polymer (BFRP) rock bolt[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(12): 79-86.

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