Stress-strain behavior of square concrete columns confined with hybrid B-CSM composites and development of novel prediction models

Thansirichaisree, P. and Mohamad, H. and Ejaz, A. and Saingam, P. and Hussain, Q. and Suparp, S. (2024) Stress-strain behavior of square concrete columns confined with hybrid B-CSM composites and development of novel prediction models. Composites Part C: Open Access, 14.

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Abstract

This paper presents a comprehensive investigation into the behavior of concrete confined with hybrid Basalt and Chopped Strand Mat (B-CSM) fibers. The newly proposed B-CSM confinement technique substantially enhances the brittle compressive stress-strain behavior, leading to a noteworthy increase in peak strength (approximately 90) and ultimate strain (approximately 461 ). The efficiency of B-CSM confinement is affected by the strength of plain concrete, with lower-strength specimens indicating a more pronounced enhancement. The performance of existing analytical models for FRP confinement in predicting ultimate strength and strain in B-CSM confined concrete is assessed, highlighting the need for tailored models. Regression-based equations are proposed for characteristic points along the stress-strain curve, enabling accurate prediction of material behavior. The predicted stress-strain curves exhibit a high level of agreement with experimental results. These findings provide valuable insights for the design and application of B-CSM confinement techniques in structural engineering, facilitating improved performance and ductility of concrete structures under compressive loading conditions. © 2024

Item Type: Article
Additional Information: cited By 1
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 04 Jun 2024 14:19
Last Modified: 04 Jun 2024 14:19
URI: https://khub.utp.edu.my/scholars/id/eprint/19604

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