基于不规则骨料堆积结构的混凝土水渗透性的研究

doi:10.11896/cldb.23010131

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Abstract In order to understand the influence of aggregate shape on water permeability of concrete, an irregular aggregate model is first constructed based on hyperellipsoid particles. Then, aggregate shape is quantitatively characterized (i.e., elongation, flatness, roundness, sphericity) and the dynamic packing process of different aggregates is modelled by discrete element method, in which the interactions between particles are well considered. Afterwards, a three-phase mesoscopic model of concrete is established and the water transport in concrete is simulated by using a partial bounce-back lattice Boltzmann method. After validating the proposed model, the effects of aggregate content and shape on water permeability are studied. The results show that the permeability of concrete first decreases and then goes up at an increased aggregate volume fraction. Once the content of aggregate is larger than 50%, the formed connected transport path due to the overlapping of the interfacial transition areas (ITZ) results in the increase in water permeability. The changes in aggregate shape affect the flow path, the volume fraction of ITZ and thus the permeability. In contrast to flatness, the influence of elongation on water permeability seems to be more significant. As roundness gradually rises, sphericity initially increases and then goes down, while water permeability shows an inverse tendency. The minimum value of water permeability can be obtained when the roundness is equal to 1.

Key words： concrete discrete element modelling hyperellipsoid lattice boltzmann method water permeability

Published: 25 June 2024 Online: 2024-07-17

CLC number:

TU528

Fund:National Natural Science Foundation of China (51908207,52178205) and the Natural Science Foundation of Hunan Province (2021JJ40075).

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	LI Kai
	YANG Lulu
	SHI Caijun

Cite this article:

LI Kai,YANG Lulu,SHI Caijun. Investigation on Water Permeability of Concrete Based on Irregular Aggregate Packing Structure[J]. Materials Reports, 2024, 38(12): 23010131-8.

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http://www.mater-rep.com/EN/10.11896/cldb.23010131 OR http://www.mater-rep.com/EN/Y2024/V38/I12/23010131

1 Pan S T, Li K, Zhang C H, et al. Material Reports, 2022, 36(10), 89(in Chinese).
潘诗婷, 李凯, 张超慧, 等. 材料导报, 2022, 36(10), 89.
2 Thilakarathna P S M, Kristombu Baduge S, Mendis P, et al. Journal of Materials in Civil Engineering, 2021, 33(8), 04021198.
3 Huang Y J, Guo F Q, Zhang H, et al. Cement and Concrete Composites, 2022, 126, 104347.
4 Wittmann F H, Roelfstra P E, Sadouki H. Materials Science and Engineering, 1985, 68, 239.
5 Gao Z G, Liu G T. Journal of Tsinghua University (Science and Techno-logy), 2003(5), 710(in Chinese).
高政国, 刘光廷. 清华大学学报(自然科学版), 2003(5), 710.
6 Häfner S, Eckardt S, Könke C. In:Conference Record of 16 th IKM 2003. Weimar, 2003.
7 Qian Z W. Multiscale modeling of fracture processes in cementitious materials. Ph. D. Thesis, Delft University of Technology, NL, 2012.
8 Zhao S W, Zhao J D. International Journal for Numerical and Analytical Methods in Geomechanics, 2019, 43, 2147.
9 Zhang Y, Ye G, Yang Z X. Construction and Building Materials, 2020, 238, 117680.
10 Zhang M, Ye G, Breugel K. Computational Materials Science, 2013, 68, 142.
11 Chen S Y, You Z P, Yang S L, et al. Construction and Building Mate-rials, 2020, 240, 117896.
12 Li K, Xu L, Yang L L, et al. Journal of the Chinese Ceramic Society, 2022, 50(10), 2701(in Chinese).
李凯, 许立, 杨璐璐, 等. 硅酸盐学报, 2022, 50(10), 2701.
13 Barrett P J. Sedimentology, 1980, 27, 291.
14 Zhou Y, Liu Q F. Material Reports, 2023, 37(24), 22070243(in Chinese).
周宇, 刘清风. 材料导报, 2023, 37(24), 22070243.
15 Yang S L, Hu S T, Zhang W T. Powder Technology, 2022, 396, 210.
16 Yang J, Luo X D. Journal of the Mechanics and Physics of Solids, 2015, 84, 196.
17 Bergen G. Journal of Graphics Tools, 1997, 2, 1.
18 Zhao S W, Zhang N, Zhou X W, et al. Powder Technology, 2017, 310, 175.
19 Wellmann C, Lillie C, Wriggers P. Engineering Computations, 2008, 25, 432.
20 Bagi K. Granular Matter, 2003, 5, 45.
21 Li X X, Xu Y, Chen S H. Construction and Building Materials, 2016, 121, 100.
22 Scrivener K L, Crumbie A K, Laugesen P. Interface Science, 2004, 12, 411.
23 Xiao J Z, Li W G, Corr D J, et al. Cement and Concrete Research, 2013, 52, 82.
24 Huang Y J, Yang Z J, Ren W Y, et al. International Journal of Solids and Structures, 2015, 67, 340.
25 Huang Y J, Yang Z J, Chen X W, et al. International Journal of Impact Engineering, 2016, 97, 102.
26 Huang Y J, Guo F Q, Zhang H, et al. Cement and Concrete Composites, 2022, 126, 104347.
27 Wong H S, Zobel M, Buenfeld N R, et al. Magazine of Concrete Research, 2009, 61, 571.
28 Zhang Y, Zhang M Z. Construction and Building Materials, 2014, 72, 367.
29 Huang Y, Hu X, Shi C J, et al. Material Reports, 2023, 37(1), 106 (in Chinese).
黄燕, 胡翔, 史才军, 等. 材料导报, 2023, 37(1), 106.
30 Li K, Stroeven P, Stroeven M, et al. Cement and Concrete Research, 2017, 102, 99.
31 Wriedt T. Particle & Particle Systems Characterization, 2002, 19, 256.
32 Liang M F, Feng K, Xiao M Q, et al. Journal of Building Materials, 2020, 23(4), 801 (in Chinese).
梁敏飞, 封坤, 肖明清, 等. 建筑材料学报, 2020, 23(4), 801.
33 Zheng S C, Zheng J J. Concrete, 2011(5), 10 (in Chinese).
郑书成, 郑建军. 混凝土, 2011(5), 10.
34 Zheng J J, Zhou X Z. Journal of Materials in Civil Engineering, 2007, 19, 784.
35 Zhao S W. A dissertation submitted for the degree of soctor of philosophy. Ph. D. Thesis, South China University of Technology, China, 2018 (in Chinese).
赵仕威. 颗粒材料物理力学特性的离散元研究. 博士学位论文, 华南理工大学, 2018.
36 Lin J J, Chen H S, Xu W X. Physical Review E, 2018, 98, 012134.