{"title":"Effect of Sustained Loads on Flexural Crack Width in Concrete Beams Reinforced with Internal FRP Reinforcement","authors":"S. Gross, J. Yost, D. J. Stefanski","doi":"10.14359/51663258","DOIUrl":null,"url":null,"abstract":"This paper will discuss an experimental study that was conducted to evaluate the increase in crack width occurring over time in fiber reinforced polymer (FRP) reinforced concrete as a result of sustained loading. Twelve beams (eight GFRP, two CFRP, and two steel-reinforced) were maintained under a constant sustained service load for nearly three years. Three flexural cracks were monitored on each beam over the duration of the test. The observed increase in flexural crack widths over the study was greater in the FRP-reinforced specimens than in the steel-reinforced specimens. On average, flexural crack widths in FRP-reinforced concrete specimens were observed to double over one year of sustained loading. A simple design approach, based on modification to the existing ACI 440 (2006) crack control procedure, is proposed to account for this observed increase in crack widths with time.","PeriodicalId":205144,"journal":{"name":"SP-264: Serviceability of Concrete Members Reinforced with Internal/External FRP Reinforcement","volume":"108 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"SP-264: Serviceability of Concrete Members Reinforced with Internal/External FRP Reinforcement","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14359/51663258","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
This paper will discuss an experimental study that was conducted to evaluate the increase in crack width occurring over time in fiber reinforced polymer (FRP) reinforced concrete as a result of sustained loading. Twelve beams (eight GFRP, two CFRP, and two steel-reinforced) were maintained under a constant sustained service load for nearly three years. Three flexural cracks were monitored on each beam over the duration of the test. The observed increase in flexural crack widths over the study was greater in the FRP-reinforced specimens than in the steel-reinforced specimens. On average, flexural crack widths in FRP-reinforced concrete specimens were observed to double over one year of sustained loading. A simple design approach, based on modification to the existing ACI 440 (2006) crack control procedure, is proposed to account for this observed increase in crack widths with time.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
