Axial compressive behavior of triaxial woven fabric confined concrete cylinder

doi:10.19936/j.cnki.2096-8000.20221028.014

Abstract

Abstract: This paper adopts carbon fiber triaxial woven fabric, glass fiber triaxial woven fabric and carbon glass hybrid triaxial woven fabric respectively to confine concrete cylinder, and test the axial compression properties of constrained cylinder. The process of compression, failure mode of samples and the stress of yarns were analyzed by digital image correlation (DIC) technology and acoustic emission technology. The results showed that the concrete column confined by triaxial woven fabric had an obviously improved compressive strength and deformation quantity, for which the confined concrete cylinder by carbon fiber improved 92.1% in compressive strength and confined concrete cylinder by glass fiber improved 202% in deformation quantity. Through the comparative analysis of the results, it is found that the strength and deformation of carbon glass hybrid triaxial woven fabric confined concrete have been greatly improved. It is worth noting that the restraint effect of glass fiber as warp and carbon fiber as weft is obviously better than that of carbon fiber as warp and glass fiber as weft. The results provide a theoretical basis for analyzing the axial compression properties of the triaxial woven fabric confined concrete cylinder, and have a certain reference value for the application of triaxial woven fabric confined concrete.

Key words: triaxial woven fabric, concrete reinforcement, mechanical properties, local strain, force analysis

CLC Number:

TB332

ZHOU Yi, ZHANG Hong-hua, LI Wei. Axial compressive behavior of triaxial woven fabric confined concrete cylinder[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(10): 91-98.

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