Experimental investigation on bond properties of nano-Al2O3 and hydroxypropyl methyl cellulose (HPMC) modified coated steel bar embedded in concrete
文献类型：期刊论文
| 作者 | Zhou, Junhao2; Shang, Huaishuai2; Huang, Yue2; Fan, Liang1 |
| 刊名 | JOURNAL OF BUILDING ENGINEERING
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 98页码:17 |
| 关键词 | Coated steel bar Nano-Al2O3 HPMC Bond properties Bond-slip curve |
| DOI | 10.1016/j.jobe.2024.110928 |
| 通讯作者 | Shang, Huaishuai(shanghuaishuai@aliyun.com) |
| 英文摘要 | In this work, cementitious coatings incorporate nano-Al2O3 (NA) and HPMC were developed applying to the surface of steel bars to enhance bond behavior. A total of 81 pull-out specimens were prepared to evaluated bond properties of different coated steel bars embedded in ordinary performance concrete (OPC), high performance concrete (HPC) and ultra-high-performance concrete (UHPC). The mechanical properties of the cement-based coatings have also been examined. Test results show that flexural and compressive strengths of coating paste exhibited initially increasing and followed by decreasing as NA content increase. Synergistic effect of NA and HPMC results in cement-based coating exhibiting superior mechanical properties. Besides, coating microscopic morphology characterized by scanning electron microscope (SEM) technique revealed that fewer coating defects with NA and HPMC compounding. More importantly, the highest bond strength between coated steel bar and different types concretes was found at 1.0 % NA content in the coatings. Synergistic effect of 1.0 % NA and 0.12 % HPMC improved bond strength of coated steel bar embedded in OPC, HPC and UHPC. It can be obtained from bond-slip curve that, regardless of the HPMC addition to coatings, coated steel bar with 1.0 % NA content shows higher bond stiffness. With both NA and HPMC added, bond stiffness, bond toughness and bond ductility of coated steel bar are superior to those of the coating with NA alone. Moreover, as concrete strength increases, the bond strength, bond stiffness and bond toughness of coated steel bar also increase, respectively. |
| WOS关键词 | RHEOLOGY |
| 资助项目 | National Natural Science Foundation of China[52378245] ; Major Basic Research Projects of Shandong Natural Science Foundation[ZR2022ZD33] ; Qingdao Science and Technology Benefiting the People Demonstration Special Project[23-2-8-cspz-9-nsh] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001344407600001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/199552]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Shang, Huaishuai |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Junhao,Shang, Huaishuai,Huang, Yue,et al. Experimental investigation on bond properties of nano-Al2O3 and hydroxypropyl methyl cellulose (HPMC) modified coated steel bar embedded in concrete[J]. JOURNAL OF BUILDING ENGINEERING,2024,98:17. |
| APA | Zhou, Junhao,Shang, Huaishuai,Huang, Yue,&Fan, Liang.(2024).Experimental investigation on bond properties of nano-Al2O3 and hydroxypropyl methyl cellulose (HPMC) modified coated steel bar embedded in concrete.JOURNAL OF BUILDING ENGINEERING,98,17. |
| MLA | Zhou, Junhao,et al."Experimental investigation on bond properties of nano-Al2O3 and hydroxypropyl methyl cellulose (HPMC) modified coated steel bar embedded in concrete".JOURNAL OF BUILDING ENGINEERING 98(2024):17. |
入库方式： OAI收割
来源：海洋研究所
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