The Influence of the Addition of Multi-Scale Zirconia on the Properties of Ultra-High-Performance Concretes
文献类型：期刊论文
| 作者 | Wang, Qilin3,4; Liu, Haifeng3; Zhang, Yongtao2; Chen, Peishuai2; Gong, Jianwu4; Zhong, Yu2; Gao, Ran2; Lei, Jinnan1; Yu, Haiyang1; Tang, Lingya1 |
| 刊名 | BUILDINGS
 |
| 出版日期 | 2025-04-07 |
| 卷号 | 15期号:7页码:19 |
| 关键词 | nano-zirconia UHPC reinforcing mechanisms microstructure |
| DOI | 10.3390/buildings15071207 |
| 英文摘要 | This study explores an innovative application of ultra-high-performance concrete (UHPC) by partially substituting cement with nano-zirconia (NZ) and micro-zirconia (MZ). A series of experiments were conducted to explore the influence of zirconia particle size (3860 nm and 320 nm) and varying replacement levels (0%, 0.5%, 1%, and 1.5%) on the workability, mechanical behavior, and microstructural characteristics of UHPC, utilizing the particle packing density model as a basis. Findings reveal that replacing 0.5% of the cement with MZ and NZ results in workability and mechanical performance comparable to the control mix. However, at 1.5 wt% MZ and 1.5 wt% NZ substitution levels, flowability declines by 22.01% and 24.71%, respectively, accompanied by a substantial increase in viscosity. The wet packing density of UHPC exhibits a linear rise with increasing zirconia content, with nano-sized particles exerting a more pronounced effect than their micro-sized counterparts. Specifically, at a 0.5% MZ replacement level, the 28-day compressive and flexural strengths show marginal improvements of 1.82% and 4.48%, respectively. The NZ1MZ0.5 mix achieves the highest 28-day compressive strength increase, reaching 9.45%, with an absolute gain of 11.92 MPa. Analyses using XRD, FTIR, and thermogravimetric analysis (TGA) demonstrate that zirconia incorporation has a negligible influence on the hydration process and does not alter the composition of hydration products in N-UHPC. Although zirconia effectively reduces porosity, excessive amounts (1.5%) increase pore size within the cement matrix, ultimately compromising mechanical properties. Based on these findings, the optimal NZ dosage for UHPC, when used in combination with MZ, is determined to be 0.5%. |
| 资助项目 | National Key R&D Program of China ; National Natural Science Foundation of China[42107202] ; National Natural Science Foundation of China[42277185] ; Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering Safety[SKLGME02202] ; Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering Safety[SKLGME022032] ; Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering Safety[SKLGME-JBGS2405] ; Hubei Natural Science Foundation[2023AFB508] ; [2021-06] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001465167700001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35592]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Haifeng |
| 作者单位 | 1.Wuchang Shouyi Univ, Sch Urban Construct, Wuhan 430064, Peoples R China 2.CCCC Second Harbour Engn Co Ltd, Wuhan 430040, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn Safety, Wuhan 430071, Peoples R China 4.Wuhan Univ Sci & Technol, Sch Urban Construct, Wuhan 430065, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qilin,Liu, Haifeng,Zhang, Yongtao,et al. The Influence of the Addition of Multi-Scale Zirconia on the Properties of Ultra-High-Performance Concretes[J]. BUILDINGS,2025,15(7):19. |
| APA | Wang, Qilin.,Liu, Haifeng.,Zhang, Yongtao.,Chen, Peishuai.,Gong, Jianwu.,...&Tang, Lingya.(2025).The Influence of the Addition of Multi-Scale Zirconia on the Properties of Ultra-High-Performance Concretes.BUILDINGS,15(7),19. |
| MLA | Wang, Qilin,et al."The Influence of the Addition of Multi-Scale Zirconia on the Properties of Ultra-High-Performance Concretes".BUILDINGS 15.7(2025):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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