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

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Construction and Building Materials Pub Date : 2025-04-11 Epub Date: 2025-03-10 DOI:10.1016/j.conbuildmat.2025.140687

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

{"title":"Enhancing flexural and shear capacities of RC T-beams with FRCM incorporating a full FRCM-concrete bond","authors":"Kambiz Daneshvar , M. Javad Moradi , Naeim Roshan , Martin Noel , Hamzeh Hajiloo","doi":"10.1016/j.conbuildmat.2025.140687","DOIUrl":null,"url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"471 ","pages":"Article 140687"},"PeriodicalIF":8.0000,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Construction and Building Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0950061825008359","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/10 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

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.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

增强钢筋混凝土混凝土混凝土t梁的抗弯和抗剪能力

本研究探讨纤维增强胶凝基质（FRCM）系统在增强钢筋混凝土（RC） t梁的抗弯和抗剪能力方面的有效性。该研究还包括对现有frp - cm加固梁的实验测试的全面审查，突出了文献中的主要趋势和差距。它揭示了先前研究的范围有限，特别是全尺寸t梁研究的缺乏，以及由于表面制备方法和失效模式的差异，报告结果的可变性。本研究共对5根全尺寸t型梁进行了试验，其中3根采用frp加固，2根采用对照试件。为了实现FRCM与混凝土之间的完全粘合，采用了细致的表面处理，包括基材开槽，以防止常见的脱粘，并获得FRCM的充分利用。弯曲增强可使最大载荷提高22.7% %，破坏主要是纤维断裂和混凝土破碎。剪切强化可使承载能力提高19% %，由脆性剪切破坏转变为延性弯曲破坏。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

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.