EXPERIMENTAL STUDY OF THE SHEAR PERFORMANCE OF BFRP-REINFORCED RAC BEAMS WITHOUT STIRRUPS

Abstract

Abstract: According to the shear tests of 4 basalt fiber reinforced polymer (BFRP) reinforced recycled aggregate concrete (RAC) beams without stirrups and 4 recycled concrete beams without stirrups, the failure modes and cracking patterns for recycled concrete beams of which recycled coarse aggregate replacement ratio for 100% were observed. The influence of shear span ratio, reinforcement ratio, and concrete compressive strength on the cracking load, ultimate bearing capacity and deflection of the beams with different types of longitudinal reinforcement were also analyzed. The test results were compared with shear design equations of the GB 50608—2010, the ACI-440.1R-06 and the CSA.S 806-12 guidelines. The results indicate that the behavior of recycled concrete beam is similar to that of ordinary concrete beam, yet the crack propagation and crack width are faster and wider for recycled concrete beams reinforced with BFRP bars. And, shear design equations of the ACI-440.1R-06 and the CSA.S 806-12 codes provided quite close predictions. However, the predictions of GB 50608—2010 were over-conservative.

Key words: beam without stirrups, basalt fiber reinforced polymer bars, recycled aggregate concrete, deflection, shear capacity

CLC Number:

TB332

HAN Ding-jie, LIU Hua-xin, ZHANG Zhi-jin, PENG Chang-ling. EXPERIMENTAL STUDY OF THE SHEAR PERFORMANCE OF BFRP-REINFORCED RAC BEAMS WITHOUT STIRRUPS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(8): 76-82.

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