Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface Law
Existing experimental research on bond properties of the interface between Carbon Fiber Reinforced Polymer (CFRP) and damaged concrete is limited, although CFRP strengthening technology has been widely used for corroded reinforced concrete structures. This work investigated the bond behavior of CFRP...
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MDPI AG
2021-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/18/5333 |
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| author | Yongzhi Gong Yingjie Shan Yuyuan Wu Liping Wang Xiaojie Liu Faxing Ding |
| author_facet | Yongzhi Gong Yingjie Shan Yuyuan Wu Liping Wang Xiaojie Liu Faxing Ding |
| author_sort | Yongzhi Gong |
| collection | DOAJ |
| description | Existing experimental research on bond properties of the interface between Carbon Fiber Reinforced Polymer (CFRP) and damaged concrete is limited, although CFRP strengthening technology has been widely used for corroded reinforced concrete structures. This work investigated the bond behavior of CFRP to the corrosion-cracked concrete interface, in which three factors were considered for experimentation, including corrosion degree, concrete strength and concrete cover thickness. The tests were conducted by developing a self-balancing double shear lap test device. In addition, a corrosion scene was provided simultaneously to simulate the external corrosion environment. The results showed that three peeling modes of CFRP sheets were observed with respect to corrosion degrees of the steel bars. The effects of the three factors on the stripping bearing capacity and effective bond length of CFRP sheets were discussed by systematic parametric analysis. Finally, a nonlinear degenerate law of CFRP-to-concrete interface considering the corrosion degree was improved and verified in this study. |
| first_indexed | 2024-03-10T07:29:06Z |
| format | Article |
| id | doaj.art-918f8e2d28064eb9ac3722abc3726cc4 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T07:29:06Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-918f8e2d28064eb9ac3722abc3726cc42023-11-22T14:02:24ZengMDPI AGMaterials1996-19442021-09-011418533310.3390/ma14185333Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface LawYongzhi Gong0Yingjie Shan1Yuyuan Wu2Liping Wang3Xiaojie Liu4Faxing Ding5College of Civil Engineering, Central South University, Changsha 410075, ChinaCollege of Civil Engineering, Central South University, Changsha 410075, ChinaHuidong County Construction Quality Inspection Station, Huizhou 516000, ChinaCollege of Civil Engineering, Central South University, Changsha 410075, ChinaCollege of Civil Engineering, Central South University, Changsha 410075, ChinaCollege of Civil Engineering, Central South University, Changsha 410075, ChinaExisting experimental research on bond properties of the interface between Carbon Fiber Reinforced Polymer (CFRP) and damaged concrete is limited, although CFRP strengthening technology has been widely used for corroded reinforced concrete structures. This work investigated the bond behavior of CFRP to the corrosion-cracked concrete interface, in which three factors were considered for experimentation, including corrosion degree, concrete strength and concrete cover thickness. The tests were conducted by developing a self-balancing double shear lap test device. In addition, a corrosion scene was provided simultaneously to simulate the external corrosion environment. The results showed that three peeling modes of CFRP sheets were observed with respect to corrosion degrees of the steel bars. The effects of the three factors on the stripping bearing capacity and effective bond length of CFRP sheets were discussed by systematic parametric analysis. Finally, a nonlinear degenerate law of CFRP-to-concrete interface considering the corrosion degree was improved and verified in this study.https://www.mdpi.com/1996-1944/14/18/5333corrosionCFRP to concrete interfacedouble shear lap testeffective bond lengthnonlinear degenerate law |
| spellingShingle | Yongzhi Gong Yingjie Shan Yuyuan Wu Liping Wang Xiaojie Liu Faxing Ding Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface Law Materials corrosion CFRP to concrete interface double shear lap test effective bond length nonlinear degenerate law |
| title | Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface Law |
| title_full | Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface Law |
| title_fullStr | Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface Law |
| title_full_unstemmed | Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface Law |
| title_short | Bond Properties of Carbon Fiber Reinforced Polymer and Corrosion-Cracked Reinforced Concrete Interface: Experimental Test and Nonlinear Degenerate Interface Law |
| title_sort | bond properties of carbon fiber reinforced polymer and corrosion cracked reinforced concrete interface experimental test and nonlinear degenerate interface law |
| topic | corrosion CFRP to concrete interface double shear lap test effective bond length nonlinear degenerate law |
| url | https://www.mdpi.com/1996-1944/14/18/5333 |
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