Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/96418
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Civil and Environmental Engineering | en_US |
dc.creator | Peng, KD | en_US |
dc.creator | Huang, JQ | en_US |
dc.creator | Huang, BT | en_US |
dc.creator | Xu, LY | en_US |
dc.creator | Dai, JG | en_US |
dc.date.accessioned | 2022-12-05T08:37:17Z | - |
dc.date.available | 2022-12-05T08:37:17Z | - |
dc.identifier.issn | 0263-8223 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/96418 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.subject | Fiber-Reinforced Polymer (FRP) | en_US |
dc.subject | Small-diameter FRP bar | en_US |
dc.subject | Geopolymer | en_US |
dc.subject | Alkali-activated fly ash/slag | en_US |
dc.subject | Shear strengthening | en_US |
dc.subject | Reinforced concrete | en_US |
dc.title | Shear strengthening of reinforced concrete beams using geopolymer-bonded small-diameter FRP bars | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 305 | en_US |
dc.identifier.doi | 10.1016/j.compstruct.2022.116513 | en_US |
dcterms.abstract | In this study, a comprehensive investigation of the shear behavior of RC beams strengthened with a small-diameter FRP bar-reinforced geopolymer matrix (FRGM) system is presented for the first time. A total of twelve RC beams, including two reference beams and ten strengthened beams, were prepared and tested. Five factors were considered, including bonding methods (geopolymer-bonded vs. epoxy-bonded), matrix types (slag-to-fly ash ratios of 9:1 vs. 6:4), alignment directions of small-diameter FRP bars (90° vs. 45° to the longitudinal direction), configurations of FRGM layers (single-side vs. double-side), and shear span-to-depth ratios of RC beams (a/d = 2.4 vs. 3.2). The strengthening efficiency of RC beams with the double-side FRGM layer (1.9 times that of the reference beam) was found to be much larger than that of the RC beams with the single-side FRGM layer (1.2 times that of the reference beam). In addition, the geopolymer-bonded layer showed a similar load capacity (approximately 98 %) to its epoxy-bonded counterpart. The use of steel fibers in geopolymer matrix further restrained the development of shear cracks and improved the shear capacity. Finally, a theoretical analysis method was proposed for predicting the shear capacity of the FRGM-strengthened RC beams. | en_US |
dcterms.accessRights | embargoed access | en_US |
dcterms.bibliographicCitation | Composite structures, 1 Feb. 2023, v. 305, 116513 | en_US |
dcterms.isPartOf | Composite structures | en_US |
dcterms.issued | 2023-02-01 | - |
dc.identifier.eissn | 1879-1085 | en_US |
dc.identifier.artn | 116513 | en_US |
dc.description.validate | 202212 bcch | en_US |
dc.description.oa | Not applicable | en_US |
dc.identifier.FolderNumber | a1844 | - |
dc.identifier.SubFormID | 46023 | - |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Chinese Guangdong Province R&D Plan for Key Areas (Project Code: 2019B111107002) | en_US |
dc.description.fundingText | Hong Kong-Guangzhou Technology and Innovation Partnership Program (Project Code 201807010055) | en_US |
dc.description.fundingText | National Natural Science Foundation of China (Grant No. 52208158) | en_US |
dc.description.fundingText | Hong Kong Innovation and Technology Fund (Project Code: ITS/077/18FX) | en_US |
dc.description.pubStatus | Published | en_US |
dc.date.embargo | 2025-02-01 | en_US |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
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