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Article: Novel ductile and durable engineered cementitious composite columns reinforced with steel-FRP composite bars: Axial compression behavior and design
| Title | Novel ductile and durable engineered cementitious composite columns reinforced with steel-FRP composite bars: Axial compression behavior and design |
|---|---|
| Authors | |
| Issue Date | 18-Apr-2025 |
| Publisher | Elsevier |
| Citation | Engineering Structures, 2025, v. 335 How to Cite? |
| Abstract | Novel engineered cementitious composite (ECC) columns reinforced with hybrid reinforcement (longitudinal steel-FRP composite bars (SFCBs) and GFRP stirrups) exhibit superior load capacity, ductility, and corrosion resistance. However, the lack of research on their axial compression behavior and the key parameters seriously limits their safe application. To address this research gap, experimental investigations of 22 column specimens were conducted to evaluate their axial compression behavior. The effects of matrix type, ECC strength, hybrid reinforcement, longitudinal reinforcement type, longitudinal reinforcement ratio, and volumetric stirrup ratio were discussed. The test results show that, compared to concrete columns, unreinforced and reinforced ECC columns have 12.5 % and 10.7 % higher load capacity, respectively, with enhanced ductility characteristics. The use of ECC effectively reduces specimen damage. Longitudinal SFCBs can work synergistically with ECC, efficiently maintaining their integrity before ECC crushing. Notably, replacing longitudinal steel bars with equal-stiffness SFCBs leads to similar compression behavior of columns, including axial load capacity and ductility. The excellent tensile properties and fiber bridging effect of ECC slow the development of stirrup strain and prevent premature slip of GFRP stirrups. Furthermore, a modified prediction model of axial load capacity was proposed, which has excellent accuracy for this novel type of column. |
| Persistent Identifier | http://hdl.handle.net/10722/362291 |
| ISSN | 2023 Impact Factor: 5.6 2023 SCImago Journal Rankings: 1.661 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Bai, Yulei | - |
| dc.contributor.author | Ma, Qipeng | - |
| dc.contributor.author | Han, Shiwen | - |
| dc.contributor.author | Lin, Yang | - |
| dc.contributor.author | Zhang, Yufeng | - |
| dc.contributor.author | Zhang, Hongyu | - |
| dc.date.accessioned | 2025-09-22T00:30:08Z | - |
| dc.date.available | 2025-09-22T00:30:08Z | - |
| dc.date.issued | 2025-04-18 | - |
| dc.identifier.citation | Engineering Structures, 2025, v. 335 | - |
| dc.identifier.issn | 0141-0296 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/362291 | - |
| dc.description.abstract | <p>Novel <a href="https://www.sciencedirect.com/topics/engineering/engineered-cementitious-composite" title="Learn more about engineered cementitious composite from ScienceDirect's AI-generated Topic Pages">engineered cementitious composite</a> (ECC) columns reinforced with hybrid reinforcement (longitudinal steel-FRP composite bars (SFCBs) and GFRP stirrups) exhibit superior load capacity, ductility, and <a href="https://www.sciencedirect.com/topics/engineering/corrosion-resistance" title="Learn more about corrosion resistance from ScienceDirect's AI-generated Topic Pages">corrosion resistance</a>. However, the lack of research on their <a href="https://www.sciencedirect.com/topics/engineering/axial-compression" title="Learn more about axial compression from ScienceDirect's AI-generated Topic Pages">axial compression</a> behavior and the key parameters seriously limits their safe application. To address this research gap, experimental investigations of 22 column specimens were conducted to evaluate their axial compression behavior. The effects of matrix type, ECC strength, hybrid reinforcement, longitudinal reinforcement type, longitudinal reinforcement ratio, and volumetric stirrup ratio were discussed. The test results show that, compared to concrete columns, unreinforced and reinforced ECC columns have 12.5 % and 10.7 % higher load capacity, respectively, with enhanced ductility characteristics. The use of ECC effectively reduces specimen damage. Longitudinal SFCBs can work synergistically with ECC, efficiently maintaining their integrity before ECC crushing. Notably, replacing longitudinal steel bars with equal-stiffness SFCBs leads to similar compression behavior of columns, including <a href="https://www.sciencedirect.com/topics/engineering/axial-load" title="Learn more about axial load from ScienceDirect's AI-generated Topic Pages">axial load</a> capacity and ductility. The excellent <a href="https://www.sciencedirect.com/topics/engineering/tensile-property" title="Learn more about tensile properties from ScienceDirect's AI-generated Topic Pages">tensile properties</a> and fiber bridging effect of ECC slow the development of stirrup strain and prevent premature slip of GFRP stirrups. Furthermore, a modified prediction model of axial load capacity was proposed, which has excellent accuracy for this novel type of column.<br></p> | - |
| dc.language | eng | - |
| dc.publisher | Elsevier | - |
| dc.relation.ispartof | Engineering Structures | - |
| dc.title | Novel ductile and durable engineered cementitious composite columns reinforced with steel-FRP composite bars: Axial compression behavior and design | - |
| dc.type | Article | - |
| dc.identifier.doi | 10.1016/j.engstruct.2025.120311 | - |
| dc.identifier.volume | 335 | - |
| dc.identifier.eissn | 1873-7323 | - |
| dc.identifier.issnl | 0141-0296 | - |