Investigating the performance of basalt FRP-reinforced concrete columns: experimental and analytical insights

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL

Archives of Civil and Mechanical Engineering Pub Date : 2024-08-05 DOI:10.1007/s43452-024-01023-3

Hamzah Alzoubi, Hussein Elsanadedy, Husain Abbas, Tarek Almusallam, Aref Abadel, Yousef Al-Salloum

{"title":"Investigating the performance of basalt FRP-reinforced concrete columns: experimental and analytical insights","authors":"Hamzah Alzoubi, Hussein Elsanadedy, Husain Abbas, Tarek Almusallam, Aref Abadel, Yousef Al-Salloum","doi":"10.1007/s43452-024-01023-3","DOIUrl":null,"url":null,"abstract":"<div><p>Aggressive environments can lead to deficiencies or failure in reinforced concrete (RC) members because of the corrosion of reinforcing steel bars. Therefore, bars manufactured from fiber-reinforced polymer (FRP) composites have been employed as a possible substitute for steel bars in RC members. FRP bars have corrosion resistance greater than the conventional steel rebars and a higher ultimate tensile strength. The aim of current investigation was to examine the flexural and compression behavior of slender RC columns having Basalt FRP (BFRP) rebars. Six square slender columns of 240 mm size and 2.8 m long were fabricated in three sets with each set of 2 columns. The columns of the first set were reinforced with 6ϕ12 mm steel rebars (1.1%), whereas the columns of the second and third sets had internal BFRP rebars. The second and third sets differed in the diameter of BFRP rebars, and the percentage of reinforcement was nearly same. The second and third sets had longitudinal BFRP rebars of 6ϕ12 mm (1.1%) and 12ϕ8 mm (1.0%), respectively. Test specimens were subjected to concentric and eccentric (eccentricity = 50 mm) compression. The average compressive strain in BFRP rebars at maximum load was slightly greater than the crushing strain of concrete for both BFRP bar diameters (ϕ8 mm and ϕ12 mm) indicating that the compressive stress in BFRP bars can be calculated from strain compatibility. Analytical model was also carried out for developing the <i>P–M</i> interaction graphs for columns having BFRP rebars. The developed model included the compression resistance of BFRP rebars. The analytically predicted interaction diagrams were conservative and near the experimental ones. The test results of this study were compared with other similar studies from the literature, and the effects of eccentricity-to-depth and slenderness ratios on the second-to-first-order moment ratios were examined for eccentrically loaded FRP-reinforced concrete columns.</p></div>","PeriodicalId":55474,"journal":{"name":"Archives of Civil and Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archives of Civil and Mechanical Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s43452-024-01023-3","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

Aggressive environments can lead to deficiencies or failure in reinforced concrete (RC) members because of the corrosion of reinforcing steel bars. Therefore, bars manufactured from fiber-reinforced polymer (FRP) composites have been employed as a possible substitute for steel bars in RC members. FRP bars have corrosion resistance greater than the conventional steel rebars and a higher ultimate tensile strength. The aim of current investigation was to examine the flexural and compression behavior of slender RC columns having Basalt FRP (BFRP) rebars. Six square slender columns of 240 mm size and 2.8 m long were fabricated in three sets with each set of 2 columns. The columns of the first set were reinforced with 6ϕ12 mm steel rebars (1.1%), whereas the columns of the second and third sets had internal BFRP rebars. The second and third sets differed in the diameter of BFRP rebars, and the percentage of reinforcement was nearly same. The second and third sets had longitudinal BFRP rebars of 6ϕ12 mm (1.1%) and 12ϕ8 mm (1.0%), respectively. Test specimens were subjected to concentric and eccentric (eccentricity = 50 mm) compression. The average compressive strain in BFRP rebars at maximum load was slightly greater than the crushing strain of concrete for both BFRP bar diameters (ϕ8 mm and ϕ12 mm) indicating that the compressive stress in BFRP bars can be calculated from strain compatibility. Analytical model was also carried out for developing the P–M interaction graphs for columns having BFRP rebars. The developed model included the compression resistance of BFRP rebars. The analytically predicted interaction diagrams were conservative and near the experimental ones. The test results of this study were compared with other similar studies from the literature, and the effects of eccentricity-to-depth and slenderness ratios on the second-to-first-order moment ratios were examined for eccentrically loaded FRP-reinforced concrete columns.

Abstract Image

查看原文本刊更多论文

研究玄武岩玻璃钢加固混凝土柱的性能：实验和分析见解

由于钢筋锈蚀，侵蚀性环境会导致钢筋混凝土（RC）构件出现缺陷或失效。因此，纤维增强聚合物（FRP）复合材料制成的钢筋已被用来替代 RC 构件中的钢筋。FRP 钢筋比传统钢筋具有更强的耐腐蚀性和更高的极限抗拉强度。本次调查的目的是研究使用玄武岩玻璃纤维增强塑料（BFRP）钢筋的细长 RC 柱的弯曲和压缩行为。六根尺寸为 240 毫米、长度为 2.8 米的方形细长柱分成三组，每组两根。第一组的柱子使用 6ϕ12 毫米的钢筋（1.1%）进行加固，而第二组和第三组的柱子则使用内部 BFRP 钢筋。第二组和第三组的 BFRP 钢筋直径不同，但加固比例几乎相同。第二组和第三组的纵向 BFRP 钢筋直径分别为 6ϕ12 mm（1.1%）和 12ϕ8 mm（1.0%）。试样受到同心和偏心（偏心率 = 50 毫米）压缩。对于两种直径的 BFRP 钢筋（ϕ8 毫米和ϕ12 毫米），最大荷载下 BFRP 钢筋的平均压缩应变都略大于混凝土的压碎应变，这表明 BFRP 钢筋的压缩应力可以通过应变相容性计算出来。还建立了分析模型，以绘制 BFRP 钢筋柱的 P-M 相互作用图。开发的模型包括 BFRP 钢筋的抗压性能。分析预测的相互作用图是保守的，接近实验图。本研究的测试结果与文献中的其他类似研究进行了比较，并考察了偏心加载玻璃纤维增强混凝土柱的偏心深度比和细长比对二阶到一阶弯矩比的影响。

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分钟内获得全文求助全文

来源期刊

Archives of Civil and Mechanical Engineering 工程技术-材料科学：综合

CiteScore

6.80

自引率

9.10%

发文量

201

审稿时长

4 months

期刊介绍： Archives of Civil and Mechanical Engineering (ACME) publishes both theoretical and experimental original research articles which explore or exploit new ideas and techniques in three main areas: structural engineering, mechanics of materials and materials science. The aim of the journal is to advance science related to structural engineering focusing on structures, machines and mechanical systems. The journal also promotes advancement in the area of mechanics of materials, by publishing most recent findings in elasticity, plasticity, rheology, fatigue and fracture mechanics. The third area the journal is concentrating on is materials science, with emphasis on metals, composites, etc., their structures and properties as well as methods of evaluation. In addition to research papers, the Editorial Board welcomes state-of-the-art reviews on specialized topics. All such articles have to be sent to the Editor-in-Chief before submission for pre-submission review process. Only articles approved by the Editor-in-Chief in pre-submission process can be submitted to the journal for further processing. Approval in pre-submission stage doesn''t guarantee acceptance for publication as all papers are subject to a regular referee procedure.