基于CT图像三维重建的高温下再生混凝土孔隙特征研究

doi:10.11896/cldb.22060128

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Abstract High temperatures can lead to deterioration of concrete microstructure damage, which in turn leads to a decrease in concrete mechanical pro-perties. In this work, computerized tomography (CT) technology was used to identify the pore structure characteristics of recycled aggregate concrete mixed with glazed hollow beads (GHB-RAC) specimens after high temperature. The characteristic parameters of concrete pore structure were extracted and analyzed based on CT scanning and three-dimensional reconstruction modelling. And the gray correlation theory was applied to investigate the influence degree of the pore structure characteristic parameters on the residual comprehensive strength of concrete. The results show that the internal pore structure of GHB-RAC can be affected by temperature; the internal pore size and surface area increase with temperature; and the temperature increase affects the concrete pore homogeneity and intensifies the distribution of pore in-homogeneity. With the incorporation of GHB, the pore structure of concrete improved effectively and reduces the pore distortion caused by high temperature. The gray correlation between pore size, pore sphericity and residual compressive strength is above 0.55, which indicates a great correlation between pore structure and residual comprehensive strength.

Key words： CT testing recycled aggregate concrete pore structure compressive strength grey correlation degree

Published: 10 March 2024 Online: 2024-03-18

CLC number:

TU541

Fund:National Natural Science Foundation of China (51808375, 52078473, 5201101735), Russian Foundation for Basic Research (21-51-53008), Science and Technology Plan Project of Ministry of Housing and Urban-Rural Development (2021-K-046), and Emerging Industry Leaders Project of Shanxi Province (202014).

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	Articles by authors
	DU Sizhe
	ZHANG Miao
	ZHANG Yu
	Selyutina Nina
	Smirnov Ivan
	MA Shujuan
	DONG Xiaoqiang
	LIU Yuanzhen

Cite this article:

DU Sizhe,ZHANG Miao,ZHANG Yu, et al. Study on Pore Characteristics of Recycled Aggregate Concrete at High Temperature Based on 3D Reconstruction of CT Images[J]. Materials Reports, 2024, 38(5): 22060128-11.

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http://www.mater-rep.com/EN/10.11896/cldb.22060128 OR http://www.mater-rep.com/EN/Y2024/V38/I5/22060128

1 Cui S, Liu P, Su J, et al. Construction and Building Materials, 2018, 174, 603.
2 Hay R, Dung N T, Lesimple A, et al. Cement and Concrete Composites, 2021, 118, 103955.
3 Kodur V, Dwaikat M. Journal of Structural Fire Engineering, 2010, 1(2), 73.
4 Ryu E, Kim H, Chun Y, et al. Engineering Structures, 2020, 207, 110165.
5 Sadineni S B, Madala S, Boehm R F. Renewable & Sustainable Energy Reviews, 2011, 15(8), 3617.
6 Tu J, Wang Y, Zhou M, et al. Journal of Building Engineering, 2021, 40, 102629.
7 Miao Y C, Zhang Y, Deng K Z, et al. Acta Materiae Compositae Sinica, 2022, 39(6), 2806(in Chinese).
苗艳春, 张玉, 邓克招, 等. 复合材料学报, 2022, 39(6), 2806.
8 Zhao L, Wang W, Li Z, et al. Material Research Innovations, 2016, 19, S5-929.
9 Jalilifar H, Sajedi F. Construction and Building Materials, 2020, 267, 121041.
10 Xiao J Z, Huang Y B. Journal of Building Materials, 2006, 9(3), 255(in Chinese).
肖建庄, 黄运标. 建筑材料学报, 2006, 9(3), 255.
11 Xu M, Wang T, Chen Z F. Journal of Building Structures, 2015, 36(2), 158(in Chinese).
徐明, 王韬, 陈忠范. 建筑结构学报, 2015, 36(2), 158.
12 Li W G, Luo Z Y, Tao Z. Construction and Building Materials, 2017, 146, 571.
13 Wan F X, Zhao P H, Lian H J. Concrete, 2017(1), 52(in Chinese).
万夫雄, 赵鹏辉, 连会杰. 混凝土, 2017(1), 52.
14 Wang W J, Zhao L, Liu Y Z, et al. Magazine of Concrete Research, 2014, 66(10), 492.
15 Guo Y D, Liu Y Z, Wang W J, et al. Journal of Building Engineering, 2020, 32, 101797.
16 Hao L, Liu Y Z, Wang W, et al. Construction and Building Materials, 2018, 189, 478.
17 Heap M J, Lavallee Y, Laumann A, et al. Construction and Building Materials, 2013, 42, 248.
18 Xiong H R, Xu J M, Liu Y Z, et al. Advances in Materials Science and Engineering, 2016, 2016, 1.
19 中华人民共和国住房和城乡建设部, 国家市场监督管理总局. GB/T 50081-2019, 混凝土物理力学性能试验方法标准. 中国建筑工业出版社, 2019.
20 Flores-Ales V, Alducin-Ochoa J M, Martín-del-Río J J, et al. Journal of Building Engineering, 2020, 29, 101158.
21 Zhao D F, Gao H J, Jia P H. Journal of Vibration and Shock, 2018, 37(4), 240(in Chinese).
赵东拂, 高海静, 贾朋贺. 振动与冲击, 2018, 37(4), 240.
22 Ríos J D, Arenas C, Cifuentes H, et al. Environmental Progress and Sustainable Energy, 2020, 39(3), e13382.
23 Stepkowska E T, Blanes J M, Franco F, et al. Thermochimica Acta, 2004, 420(1-2), 79.
24 Liu Y, Ji H, Zhang J, et al. Materials Testing, 2016, 58(7-8), 669.
25 Kalifa P, Menneteau F D, Quenard D. Cement and Concrete Research, 2000, 30(12), 1915.
26 Yun G, Jiang J, Schutter G D, et al. Construction and Building Materials, 2014, 69, 253.
27 Rashad A M, Bai Y, Basheer P A M, et al. Cement of Concrete Research, 2012, 42(2), 333
28 Du S Z, Zhang Y, Zhang J, et al. Construction and Building Materials, 2022, 323, 126564.
29 Kong L, Ostadhassan M, Li C, et al. Journal of Materials Science, 2018, 53(7), 5063.
30 Liu S F, Yang Y J, Wu L F. Gray system theory and its applications, China Science Publishing & Media Ltd, China, 2014, pp.21(in Chinese).
刘思峰, 杨英杰, 吴利丰. 灰色系统理论及其应用, 科学出版社, 2014, pp.21.