{"title":"Experimental Study of Rectangular RC Columns Strengthened with CFRP Composites under Eccentric Loading","authors":"P. Sadeghian, A. Rahai, M. Ehsani","doi":"10.1061/(ASCE)CC.1943-5614.0000100","DOIUrl":null,"url":null,"abstract":"This paper presents the results of experimental studies on reinforced concrete columns strengthened with carbon fiber-reinforced polymer (CFRP) composites under the combination of axial load and bending moment. A total of seven large-scale specimens with rectangular cross section ( 200 mm×300 mm ) were prepared and tested under eccentric compressive loading up to failure. The overall length of specimens with two haunched heads was 2,700 mm. Different FRP thicknesses of two, three, and five layers; fiber orientations of 0°, 45°, and 90°; and two eccentricities of 200 and 300 mm were investigated. The effects of these parameters on load-displacement and moment-curvature behaviors of the columns as well as the variation of longitudinal and transverse strains on different faces of the columns were studied. The results of the study demonstrated a significant enhancement on the performance of strengthened columns compared to unstrengthened columns.","PeriodicalId":15540,"journal":{"name":"Journal of Composites for Construction","volume":"14 1","pages":"443-450"},"PeriodicalIF":2.9000,"publicationDate":"2010-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1061/(ASCE)CC.1943-5614.0000100","citationCount":"88","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Composites for Construction","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1061/(ASCE)CC.1943-5614.0000100","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 88
Abstract
This paper presents the results of experimental studies on reinforced concrete columns strengthened with carbon fiber-reinforced polymer (CFRP) composites under the combination of axial load and bending moment. A total of seven large-scale specimens with rectangular cross section ( 200 mm×300 mm ) were prepared and tested under eccentric compressive loading up to failure. The overall length of specimens with two haunched heads was 2,700 mm. Different FRP thicknesses of two, three, and five layers; fiber orientations of 0°, 45°, and 90°; and two eccentricities of 200 and 300 mm were investigated. The effects of these parameters on load-displacement and moment-curvature behaviors of the columns as well as the variation of longitudinal and transverse strains on different faces of the columns were studied. The results of the study demonstrated a significant enhancement on the performance of strengthened columns compared to unstrengthened columns.
期刊介绍：
The Journal of Composites for Construction publishes original research papers, review papers, and case studies dealing with the use of fiber-reinforced composite materials in construction. Of special interest to the Journal are papers that bridge the gap between research in the mechanics and manufacturing science of composite materials and the analysis and design of large civil engineering structural systems and their construction processes. The Journal publishes papers about composite materials consisting of continuous synthetic fibers and matrices for use in civil engineering structures and subjected to the loadings and environments of the infrastructure. The Journal publishes papers about composite materials in stand-alone forms (e.g., structural shapes) or used in conjunction with traditional construction materials such as concrete, masonry, metals and timber, either as reinforcing members or in hybrid systems, for both new construction and for repair and rehabilitation of existing structures. The Journal also publishes papers about codes and standards related to fiber-reinforced composites for construction.
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