Effect of Bonding Area on Bond Stress Behavior of GFRP Bars in Concrete

Q3 Engineering

Open Civil Engineering Journal Pub Date : 2023-06-13 DOI:10.28991/cej-sp2023-09-010

.. Fakhruddin, .. Kusnadi, R. Djamaluddin, R. Irmawaty, S. Hamzah, Luna Ngeljaratan

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引用次数: 0

Abstract

The application of Glass Fiber Reinforced Polymer (GFRP) bars is suitable for concrete structures that are susceptible to corrosion, owing to their corrosion-resistant characteristics. Therefore, it is feasible to reduce the concrete cover on reinforced concrete beams by utilizing GFRP bars. However, this can reduce the bonding strength between GFRP bars and concrete. Therefore, this study aims to investigate the bonding behavior between GFRP bars and concrete as a preliminary test for structural applications. The bond stress behavior between GFRP bars and concrete was analyzed by 18 pull-out tests. The test specimens comprised GFRP bars with three different variations, namely GFRP bars with concrete cover (GFRP-C), GFRP bars without concrete cover (GFRP-E), and GFRP bars with a complete wrapping of GFRP sheet (GFRP-C-Sheet). The bond stress-slip curve, bond strength, and failure pattern were utilized to analyze the effect of each variation. The research results indicate that the bonding stress between GFRP bars and concrete was strongly influenced by the concrete cover, where the bonding strength decreased by 65%. Nevertheless, the utilization of a complete wrapping GFR) sheet resulted in a 26.4% increase in bonding stress. The present study has identified three distinct modes of failure, including pull-out (GFRP-C), concrete crushing (GFRP-E), and GFRP sheet debonding (GFRP-C-Sheet). Doi: 10.28991/CEJ-SP2023-09-010 Full Text: PDF

查看原文本刊更多论文

粘结面积对GFRP筋混凝土粘结应力行为的影响

玻璃纤维增强聚合物(GFRP)钢筋具有耐腐蚀的特点，适用于易受腐蚀的混凝土结构。因此，采用GFRP筋减少钢筋混凝土梁上的混凝土覆盖层是可行的。然而，这会降低GFRP筋与混凝土之间的粘结强度。因此，本研究旨在研究GFRP筋与混凝土之间的粘结性能，作为结构应用的初步试验。通过18次拉拔试验，分析了GFRP筋与混凝土的粘结应力行为。试件包括三种不同的GFRP筋，即GFRP筋带混凝土覆盖层(GFRP- c)、GFRP筋不带混凝土覆盖层(GFRP- e)和GFRP筋完全包裹玻璃钢片(GFRP- c - sheet)。利用黏结应力-滑移曲线、黏结强度和破坏模式分析了各变化的影响。研究结果表明:GFRP筋与混凝土的粘结应力受混凝土覆盖层影响较大，粘结强度降低65%;然而，使用一个完整的包裹GFR)片导致粘接应力增加26.4%。目前的研究已经确定了三种不同的失效模式，包括拉出(GFRP- c)、混凝土破碎(GFRP- e)和GFRP片材剥离(GFRP- c - sheet)。Doi: 10.28991/CEJ-SP2023-09-010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.