EXPERIMENTAL STUDY OF FRP-STRENGTHENED RECTANGULAR CONCRETE AS AFFECTED BY ASPECT RATIO

Abstract

Abstract: Sixteen concrete columns which is strengthened with FRP sheets were fabricated and studied. The specimens were divided into four groups according to the aspect ratio. One is a control column which is unreinforced, two columns are reinforced by full wrapping with FRP sheet, and one is reinforced by partial wrapping with FRP sheet. The failure mode, bearing capacity and ductility of columns were studied by considering the changes of aspect, the type of the FRP and reinforcement. It was shown that the aspect ratio showed obvious influence on the obtained capability ductility, but had a weak influence on the ductility. The formula recommended by the code for strengthening concrete is verified. According to the test data, a modified model is suggested about the column reinforced by partial wrapping with FRP sheet.

Key words: FRP, axially load concrete column, bearing capacity, aspect ratio, ductility

CLC Number:

TB332

YANG Zhi-gang, LI Xiao-xia, LIU Cheng-qiang. EXPERIMENTAL STUDY OF FRP-STRENGTHENED RECTANGULAR CONCRETE AS AFFECTED BY ASPECT RATIO[J]. Fiber Reinforced Plastics/Composites, 2017, 0(8): 20-24.

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