{"title":"Effects of Elevated Temperature Curing on Glass Transition Temperature of Steel/CFRP Joint and Pure Epoxy Adhesive","authors":"E. Chandrathilaka, J. Gamage, S. Fawzia","doi":"10.56748/ejse.182582","DOIUrl":null,"url":null,"abstract":"Glass transition temperature (Tg) of the steel/epoxy/CFRP composite bond can affect the service and fire performance of the system. Two test series were conducted to evaluate the Tg of the pure epoxy adhesive and the steel/epoxy/CFRP bond. A total of twenty-six double strap joints and pure epoxy adhesive samples were prepared under different curing conditions to check the Tg of bond. Six different curing conditions were used. The test results revealed that the elevated temperature curing has a significant affect on the Tg of steel/epoxy/CFRP bond and pure epoxy adhesive. A considerable improvement of Tg was noted in the joint with elevated temperature curing when compare with the epoxy adhesive samples cured under the samecondition. The strength degradation of the bond for a certain temperature exposure is also reduced with increased Tg of the joint.","PeriodicalId":52513,"journal":{"name":"Electronic Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronic Journal of Structural Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.56748/ejse.182582","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 1
Abstract
Glass transition temperature (Tg) of the steel/epoxy/CFRP composite bond can affect the service and fire performance of the system. Two test series were conducted to evaluate the Tg of the pure epoxy adhesive and the steel/epoxy/CFRP bond. A total of twenty-six double strap joints and pure epoxy adhesive samples were prepared under different curing conditions to check the Tg of bond. Six different curing conditions were used. The test results revealed that the elevated temperature curing has a significant affect on the Tg of steel/epoxy/CFRP bond and pure epoxy adhesive. A considerable improvement of Tg was noted in the joint with elevated temperature curing when compare with the epoxy adhesive samples cured under the samecondition. The strength degradation of the bond for a certain temperature exposure is also reduced with increased Tg of the joint.
期刊介绍：
The Electronic Journal of Structural Engineering (EJSE) is an international forum for the dissemination and discussion of leading edge research and practical applications in Structural Engineering. It comprises peer-reviewed technical papers, discussions and comments, and also news about conferences, workshops etc. in Structural Engineering. Original papers are invited from individuals involved in the field of structural engineering and construction. The areas of special interests include the following, but are not limited to: Analytical and design methods Bridges and High-rise Buildings Case studies and failure investigation Innovations in design and new technology New Construction Materials Performance of Structures Prefabrication Technology Repairs, Strengthening, and Maintenance Stability and Scaffolding Engineering Soil-structure interaction Standards and Codes of Practice Structural and solid mechanics Structural Safety and Reliability Testing Technologies Vibration, impact and structural dynamics Wind and earthquake engineering. EJSE is seeking original papers (research or state-of the art reviews) of the highest quality for consideration for publication. The papers will be published within 3 to 6 months. The papers are expected to make a significant contribution to the research and development activities of the academic and professional engineering community.
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