Performance of axially loaded masonry columns confined using textile reinforced concrete (TRC) added with short fibers. (12th April 2021)

• Record Type: Journal Article
• Authors: Li, Tong; Deng, Mingke; Jin, Mengna; Dong, Zhifang; Zhang, Yangxi
• Is Part Of: Construction & building materials. Volume 279(2021)
• Publication Date: 2021-04-12
• Subjects: Textile reinforced concrete (TRC) -- Textile-reinforced high ductile concrete (TRHDC) -- Masonry columns -- Strength -- Confinement; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2021.122413
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: TRC optimized with short fibers, is used in the masonry confinement. Eighteen masonry piers are tested under concentric axial loading. TRHDC confinement can improve strength, ductility and energy absorption. Applicability of models from literature are evaluated to predict the masonry strength. Abstract: Textile-reinforced high ductile concrete (TRHDC) (Li et al., 2020) is an optimized textile reinforced concrete (TRC) by using short polyvinyl alcohol (PVA) fibers. This work presented an experimental study on the compressive behavior of masonry piers confined with TRHDC jacket. The considered parameters were textile types, number of textile layers, together with a group of fiber reinforced polymer (FRP) confined columns as a reference set. Although the strength was greatly improved by the FRP wraps, the brittle failure and rather weak post-peak behavior were observed in the FRP strengthened columns. By contrast, TRHDC composites changed failure mode of columns with multiple thin cracks opening on the jacket. The compressive strength, ultimate strain and energy absorption capacity were improved by the TRHDC confinement. Analytical models from the literature were evaluated for their applicability to estimate the compressive strength of masonry piers confined with FRP or TRHDC jacket. Predictions were in good agreement with experimental data, which can be adopted in the engineering application.