Enhancing flexural and shear capacities of RC T-beams with FRCM incorporating a full FRCM-concrete bond

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Construction and Building Materials Pub Date : 2025-03-10 DOI:10.1016/j.conbuildmat.2025.140687

Kambiz Daneshvar , M. Javad Moradi , Naeim Roshan , Martin Noel , Hamzeh Hajiloo

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引用次数: 0

Abstract

This study investigates the effectiveness of fabric-reinforced cementitious matrix (FRCM) systems in enhancing the flexural and shear capacities of reinforced concrete (RC) T-beams. The study also includes a comprehensive review of existing experimental tests on FRCM-strengthened beams, highlighting key trends and gaps in the literature. It reveals the limited scope of previous research, particularly the scarcity of full-scale T-beam studies, and the variability in reported outcomes due to differences in surface preparation methods and failure modes. In this study, five full-scale T-beams were tested: three strengthened with FRCM and two control specimens. A meticulous surface preparation involving substrate grooving is used to achieve a complete bond between the FRCM and concrete to prevent common debonding and to obtain a full utilization FRCM. Flexural strengthening improved maximum load by up to 22.7 %, with failure dominated by fiber rupture and concrete crushing. Shear strengthening enhanced load-bearing capacity by 19 %, transforming brittle shear failure into ductile flexural failure.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.