Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECC
In this study, the reinforced concrete (RC) beams were strengthened by use of carbon fiber reinforced polymer (CFRP) and engineering cementitious composite (ECC). The flexural behavior of the strengthened RC beams was investigated experimentally, and analytical prediction methods were used to verify...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523004503 |
| _version_ | 1827636301561593856 |
|---|---|
| author | Dawei Liu Fengjiang Qin Jin Di Zhigang Zhang |
| author_facet | Dawei Liu Fengjiang Qin Jin Di Zhigang Zhang |
| author_sort | Dawei Liu |
| collection | DOAJ |
| description | In this study, the reinforced concrete (RC) beams were strengthened by use of carbon fiber reinforced polymer (CFRP) and engineering cementitious composite (ECC). The flexural behavior of the strengthened RC beams was investigated experimentally, and analytical prediction methods were used to verify the experimental results. The experimental results showed that, the premature delamination between CFRP plate and concrete occurred if the beam was solely reinforced by CFRP, nevertheless, this can be effectively prevented by the composite use of CFRP and ECC. Compared with reference beam, the CFRP-ECC composite strengthened technique significantly enhanced the cracking load, yield load, and ultimate load of beams up to 23–31 %, 4–6 %, and 5–10 %, respectively, in addition, the stiffness, ductility, and energy absorption capacity (EAC) can also be enhanced upon the composite strengthening. In final, the prediction model has high accuracy, and the error variation within 5 % when comparing the predicted and tested values of flexural bearing capacity. |
| first_indexed | 2024-03-09T15:40:07Z |
| format | Article |
| id | doaj.art-ace1d6c0121d4b5fac809c961d4df515 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:40:07Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-ace1d6c0121d4b5fac809c961d4df5152023-11-25T04:48:05ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02270Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECCDawei Liu0Fengjiang Qin1Jin Di2Zhigang Zhang3School of Civil Engineering, Chongqing University, Chongqing 400045, PR China; Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, PR ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, PR China; Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, PR ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, PR China; Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, PR ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, PR China; Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, PR China; Corresponding author at: School of Civil Engineering, Chongqing University, Chongqing 400045, PR China.In this study, the reinforced concrete (RC) beams were strengthened by use of carbon fiber reinforced polymer (CFRP) and engineering cementitious composite (ECC). The flexural behavior of the strengthened RC beams was investigated experimentally, and analytical prediction methods were used to verify the experimental results. The experimental results showed that, the premature delamination between CFRP plate and concrete occurred if the beam was solely reinforced by CFRP, nevertheless, this can be effectively prevented by the composite use of CFRP and ECC. Compared with reference beam, the CFRP-ECC composite strengthened technique significantly enhanced the cracking load, yield load, and ultimate load of beams up to 23–31 %, 4–6 %, and 5–10 %, respectively, in addition, the stiffness, ductility, and energy absorption capacity (EAC) can also be enhanced upon the composite strengthening. In final, the prediction model has high accuracy, and the error variation within 5 % when comparing the predicted and tested values of flexural bearing capacity.http://www.sciencedirect.com/science/article/pii/S2214509523004503RC beamStrengtheningCFRPECCFlexural performance |
| spellingShingle | Dawei Liu Fengjiang Qin Jin Di Zhigang Zhang Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECC Case Studies in Construction Materials RC beam Strengthening CFRP ECC Flexural performance |
| title | Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECC |
| title_full | Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECC |
| title_fullStr | Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECC |
| title_full_unstemmed | Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECC |
| title_short | Flexural behavior of reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymer (CFRP) and ECC |
| title_sort | flexural behavior of reinforced concrete rc beams strengthened with carbon fiber reinforced polymer cfrp and ecc |
| topic | RC beam Strengthening CFRP ECC Flexural performance |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523004503 |
| work_keys_str_mv | AT daweiliu flexuralbehaviorofreinforcedconcretercbeamsstrengthenedwithcarbonfiberreinforcedpolymercfrpandecc AT fengjiangqin flexuralbehaviorofreinforcedconcretercbeamsstrengthenedwithcarbonfiberreinforcedpolymercfrpandecc AT jindi flexuralbehaviorofreinforcedconcretercbeamsstrengthenedwithcarbonfiberreinforcedpolymercfrpandecc AT zhigangzhang flexuralbehaviorofreinforcedconcretercbeamsstrengthenedwithcarbonfiberreinforcedpolymercfrpandecc |