| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Effect of Rheology and Casting Method on Fiber Dispersion and Orientation of UHPC |
| HUANG Huanghuang1,2, TENG Le3,*, GAO Xiaojian4, LIU Zhengnan5
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1 Hubei Longzhong Laboratory, Xiangyang 441000, Hubei, China
2 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
3 School of Materials Science and Engineering, Southeast University, Nanjing 210000, China
4 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
5 School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
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Abstract This work investigated the effect of suspending mortar rheology and casting method on fiber dispersion and orientation of UHPC. The test results showed that the fiber dispersion coefficient and fiber orientation coefficient decreased with the increase of plastic viscosity for flowable UHPC with (200±10) mm mini-slump flow and prepared by conventional, 30° chute, and flow-induced casting methods. On the other hand, the fiber dispersion coefficient was increase by 25%—43% with the increase of plastic viscosity for self-consolidating UHPC with (270±10) mm mini-slump flow. The increase ratio for fiber orientation coefficient was 20% when 30° chute and flow-induced casting methods were used. For a given mini-slump flow and plastic viscosity, UHPC prepared by flow-induced casting method showed the greatest flexural strength and toughness, followed by 30° chute, while the conventional casting methods led to the lowest flexural strength and toughness. With the increase of plastic viscosity, flexural strength and toughness of UHPC casted by flow-induced method can be enhanced by 55% and 70%, respectively.
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Published: 25 December 2024
Online: 2024-12-20
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| Fund:National Natural Science Foundation of China (52202027),the Independent Innovation Projects of the Hubei Longzhong Laboratory (2022ZZ-37),and the Fundamental Research Funds for the Central Universities (WUT: 2022IVA176). |
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1 De Larrard F, Sedran T. Cement and Concrete Research, 1994, 24(6), 997.
2 Habel K, Viviani M. Cement and Concrete Research, 2006, 36(7), 1362.
3 Graybeal B, Brühwiler E, Kim B, et al. Journal of Bridge Engineering, 2020, 25(11), 4020094.
4 Nie J, Li C X, Qian G P, et al. Materials Reports, 2021, 35(4), 4042 (in Chinese).
聂洁, 李传习, 钱国平, 等. 材料导报, 2021, 35(4), 4042.
5 Yuan M, Zhu H L, Yan D H, et al. Materials Reports, 2023, 37(16), 22010230(in Chinese).
袁明, 朱海乐, 颜东煌, 等. 材料导报, 2023, 37(16), 22010230.
6 Mu R, Li H, Wang X W, et al. Journal of Building Materials, 2015, 18(3), 387 (in Chinese).
慕儒, 李辉, 王晓伟, 等. 建筑材料学报, 2015, 18(3), 387.
7 Gou H X, Zhu H B, Zhou H Y, et al. Journal of the Chinese Ceramic Society, 2020, 48(11), 1756 (in Chinese).
苟鸿翔, 朱洪波, 周海云, 等. 硅酸盐学报, 2020, 48(11), 1756.
8 Swamy R N. Matériaux et Construction, 1975, 8(3), 235.
9 Boulekbache B, Hamrat M, Chemrouk M, et al. Construction and Building Materials, 2010, 24(9), 1664.
10 Meng W, Khayat K H. Composites Part B: Engineering, 2017, 117, 26.
11 Lin Z W, Chen H, Shui Z H, et al. Bulletin of the Chinese Ceramic Society, 2019, 38(7), 2010 (in Chinese).
林泽文, 陈浩, 水中和, 等. 硅酸盐通报, 2019, 38(7), 2010.
12 Zhang Q Q, Liu J Z, Zhou H X, et al. Materials Reports, 2017, 31(23), 73 (in Chinese).
张倩倩, 刘建忠, 周华新, 等. 材料导报, 2017, 31(23), 73.
13 Roussel N. Materials Structure Construction, 2006, 39, 501.
14 Teng L, Meng W, Khayat K H. Cement and Concrete Research, 2020, 138, 106222.
15 Wang R, Gao X, Huang H, et al. Construction and Building Materials, 2017, 144, 65.
16 Wang R, Gao X, Zhang J, et al. Construction and Building Materials, 2018, 160, 39.
17 Teng L, Huang H, Khayat K H. Cement and Concrete Composites, 2022, 127, 104395. |
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2024, Vol. 38 
