Post Fire Behavior of Structural Reinforced Concrete Member (Slab) Repairing with Various Materials

Q3 Engineering

Open Civil Engineering Journal Pub Date : 2023-08-01 DOI:10.28991/cej-2023-09-08-013

A. Elsheikh, H. H. Alzamili

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引用次数: 0

Abstract

One of the most significant building materials used to build a variety of infrastructure, military, and civil structures is concrete. It can effectively withstand fire mishaps for a long period of time. This study employs a finite element simulation approach in Three steps: the first involves applying mechanical loading, the second involves applying mechanical and thermal loading; and the third involves strengthening the damaged model. Two different strengthening procedures were used to evaluate the performance of the fire-damaged slab. Two types of strengthening techniques—carbon-fiber-reinforced polymer (CFRP) sheet and slurry-infiltrated fibrous concrete (SIFCON) jacketing—were used. Studying the performance of SIFCON and CFRP together and in two different thicknesses of each for repairing both normal and high-strength concretes after fire exposure is considered limited. An investigation of their behavior can provide insights into how effective the restoration of strength is. The study aims to assess how well various repair materials perform in restoring the durability and strength of reinforced concrete members after being exposed to fire. This will assist in determining the best materials for concrete repair after a fire. Results show that the enhancements by SIFCON with a thickness of 30 mm significantly improved many indices, including load displacement behavior, ductility, and absorption energy of the slab. Doi: 10.28991/CEJ-2023-09-08-013 Full Text: PDF

查看原文本刊更多论文

不同材料修复结构钢筋混凝土构件(板)的火灾后性能

用于建造各种基础设施、军事和民用结构的最重要的建筑材料之一是混凝土。它可以有效地承受长时间的火灾事故。本研究采用有限元模拟方法，分三步进行:第一步涉及施加机械载荷，第二步涉及施加机械和热载荷;第三点是加强受损的经济模式。采用两种不同的加固方法对火灾破坏板的性能进行了评价。采用碳纤维增强聚合物(CFRP)板和浆液浸润纤维混凝土(SIFCON)夹套两种加固技术。将SIFCON和CFRP材料放在一起研究，并分别在两种不同厚度下修复普通混凝土和高强混凝土，被认为是有限的。对他们行为的调查可以让我们了解恢复力量的有效性。该研究旨在评估各种修复材料在恢复火灾后钢筋混凝土构件的耐久性和强度方面的表现。这将有助于确定火灾后混凝土修复的最佳材料。结果表明:采用厚度为30 mm的SIFCON加固，显著改善了板坯的荷载位移性能、延性和吸收能等多项指标;Doi: 10.28991/CEJ-2023-09-08-013全文:PDF

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来源期刊

Open Civil Engineering Journal Engineering-Civil and Structural Engineering

CiteScore

1.90

自引率

0.00%

发文量

期刊介绍： The Open Civil Engineering Journal is an Open Access online journal which publishes research, reviews/mini-reviews, letter articles and guest edited single topic issues in all areas of civil engineering. The Open Civil Engineering Journal, a peer-reviewed journal, is an important and reliable source of current information on developments in civil engineering. The topics covered in the journal include (but not limited to) concrete structures, construction materials, structural mechanics, soil mechanics, foundation engineering, offshore geotechnics, water resources, hydraulics, horology, coastal engineering, river engineering, ocean modeling, fluid-solid-structure interactions, offshore engineering, marine structures, constructional management and other civil engineering relevant areas.