EXPERIMENTAL STUDY ON SHEAR RESISTANCE OF BFRP REBAR BASALT FIBERREINFORCED CONCRETE DEEP BEAMS WITHOUT STIRRUPS

Abstract

Abstract: For studying the influence of basalt fiber on crack development, failure mode, mid-span deflection, diagonal cracking strength and ultimate shear strength of basalt fiber reinforced polymer (BFRP) reinforced concrete deep beams without stirrups, 5 test beams were designed and prepared with the parameters of volume ratio and length of basalt fiber, and the four points concentrated force load tests were carried out. The results showed that with the increase of fiber characteristic parameters, the diagonal compression failure transforms to shear compression failure. In contrast with the common concrete beam, the mid-span deflection and crack width of the basalt fiber reinforced concrete deep beams decrease with the growing of fiber characteristic parameters, and the diagonal cracking strength and ultimate shear strength of specimens increase with the growing of fiber characteristic parameters. Based on taking account of the influence of basalt fiber, the ultimate shear capacity of the basalt fiber reinforced concrete deep beams was calculated with reference to the code of GB 50010—2015, and the experimental values basically coincide with the calculated values.

Key words: basalt fiber, BFRP rebar, deep beam, characteristic parameters of basalt fiber, shear behavior

CLC Number:

TB332

ZHANG Zhi-jin, LIU Hua-xin, LI Qing-wen, WANG Xue-zhi. EXPERIMENTAL STUDY ON SHEAR RESISTANCE OF BFRP REBAR BASALT FIBERREINFORCED CONCRETE DEEP BEAMS WITHOUT STIRRUPS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(9): 36-40.

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