负温环境下混凝土孔结构与强度和渗透性的关系

doi:10.11896/cldb.21110198

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Abstract To explore the relationship between the pore structure of concrete and its compressive strength and chloride ion permeability in permafrost regions, tests of compressive strength, its resistance to chloride ion penetration and pore structure are designed for concretes with three different strength grades at negative temperature (-3 ℃), based on the ground temperature in permafrost regions. The results show that the proportion of pores above 200 nm significantly increases in the concrete cured at negative temperature, with the threshold pore diameter of concrete increased and the fractal dimension of concrete decreased simultaneously. The critical pore levels of concretes cured at standard and negative temperatures are 50—100 nm and 100—200 nm, respectively. The critical pore levels are significantly increased due to negative temperature curing. The relationship between the compressive strength of concrete and its fractal dimension, porosity and average pore diameter still shows the positive and negative correlation under negative temperature curing, but the degree of correlation between them is reduced. The dual-parameter regression model can accurately describe the quantitative relationship between the strength of concrete and its porosity and average pore diameter. The chloride ion migration coefficient of concrete is positively correlated with the square of the threshold pore diameter and negatively linearly correlated with the fractal dimension. Reducing the threshold pore size can effectively improve the impermeability of concrete.

Key words： threshold pore diameter critical pore levels fractal dimension dual-parameter regression model

Published: 10 August 2022 Online: 2022-08-15

CLC number:

TU528

Fund:National Natural Science Foundation of China (51768033).

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	Articles by authors
	DUAN Yun
	YANG Zijiang
	WANG Qicai
	ZHANG Rongling
	WU Chaoyang
	XUE Yanjin
	WEI Dingbang

Cite this article:

DUAN Yun,YANG Zijiang,WANG Qicai, et al. Pore Structure of Concrete at Negative Temperature Curing in Relation to Strength and Penetration[J]. Materials Reports, 2022, 36(15): 21110198-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21110198 OR http://www.mater-rep.com/EN/Y2022/V36/I15/21110198

1 Cheng G D, Wu Q B, Ma W. Scientia Sinica (Technologica), 2009, 39(1), 16 (in Chinese).
程国栋, 吴青柏, 马巍. 中国科学(技术科学), 2009, 39(1), 16.
2 Ran Y H, Li X, Cheng G D, et al. Scientia Sinica (Terrae), 2021, 51(2), 183 (in Chinese).
冉有华, 李新, 程国栋, 等. 中国科学:地球科学, 2021, 51(2), 183.
3 Ma H, Liao X P, Lai Y M. Journal of Glaciology and Geocryology, 2005, 27(2), 176 (in Chinese).
马辉, 廖小平, 赖远明.冰川冻土, 2005, 27(2), 176.
4 Shang Y H, Niu F J, Wu X Y, et al. Journal of the China Railway Society, 2020, 42(5), 127 (in Chinese).
商允虎, 牛富俊, 吴旭阳, 等. 铁道学报, 2020, 42(5), 127.
5 Mi W J, Li Y, Shi G Q, et al. Journal of Railway Engineering Society, 2010, 27(9), 15 (in Chinese).
米维军, 李勇, 石刚强, 等. 铁道工程学报, 2010, 27(9), 15.
6 Gao Q, Wen Z, Ming F, et al. Applied Thermal Engineering, 2019, 149(25), 484.
7 Li P R, Gao X J, Wang K J, et al. Construction and Building Materials, 2020, 239(10), 117862.
8 Wang X X, Liu C, Liu S G, et al.Construction and Building Materials, 2020, 247(30), 118431.
9 Zhang S H, Wang Q C, Zhang R L, et al. Bulletin of the Chinese Ceramic Society, 2016, 35(8), 2486 (in Chinese).
张少华, 王起才, 张戎令, 等.硅酸盐通报, 2016, 35(8), 2486.
10 Zhang J S, Wang B Q, Yang Q, et al. Journal of Shenyang Jianzhu University, 2011, 27(5), 915 (in Chinese).
张巨松, 王保权, 杨奇, 等. 沈阳建筑大学学报, 2011, 27(5), 915.
11 Hu Y B, Miao G Y, Xiong Y. Journal of Building Materials, 2017, 20(6), 975 (in Chinese).
胡玉兵, 苗广营, 熊羽.建筑材料学报, 2017, 20(6), 975.
12 Liu L T, Shao S L, Xu J Y, et al. Materials Reports A: Reviews Papers, 2015, 29(7), 102 (in Chinese).
刘浪涛, 邵式亮, 许金余, 等. 材料导报:综述篇, 2015, 29(7), 102.
13 Coussy O, Monteiro P J M. Cement and Concrete Research, 2008, 38(1), 40.
14 Kogbara R B, Iyengar S R, Grasley Z C, et al. Cryogenics, 2014, 64, 21.
15 Lyu Q, Qiu Q L, Zheng J, et al. Construction and Building Materials, 2019, 228(20), 116986.
16 Liu P, Cui S G, Li Z H, et al. Construction and Building Materials, 2019, 207(20), 329.
17 Guo X L, Song M. Materials Reports, 2018, 32(Z2), 440 (in Chinese).
郭晓潞, 宋猛. 材料导报, 2018, 32(Z2), 440.
18 Wu K, Shi H S, Xu L L, et al. Cement and Concrete Research, 2016, 79, 243.
19 Teng J Y, Tang J X, Wang J B, et al. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(S1), 3263 (in Chinese).
腾俊洋, 唐建新, 王进博, 等. 岩石力学与工程学报, 2018, 37(S1), 3263.
20 Zhao Y R, Liu F F, Wang L, et al. Journal of Building Materials, 2020, 23(06), 1328 (in Chinese).
赵燕茹, 刘芳芳, 王磊, 等. 建筑材料学报, 2020, 23(6), 1328.
21 Jin S S, Zhang J X, Han S. Construction and Building Materials, 2017, 135(15), 1.
22 Cui S G, Liu P, Cui E Q, et al. Construction and Building Materials, 2018, 173(10),124.
23 Zarnaghi V N, Fouroghi-Asl A, Nourani V, et al. Construction and Building Materials, 2018, 193(30), 557.
24 中华人民共和国住房和城乡建设部. 混凝土物理力学性能试验方法标准: GB/T 50081-2019. 中国建筑工业出版社, 2019.
25 中华人民共和国住房和城乡建设部. 普通混凝土长期性能和耐久性能试验方法标准: GB/T 50082-2009. 中国建筑工业出版社, 2009.
26 Rootare H M, Prenzlow C F. The Journal of physical chemistry, 1967, 71(8), 2733.
27 Zhang B Q, Li S F. Industrial & Engineering Chemistry Research, 1995, 34(4), 1383.
28 Zhang B Q,Liu X F, Li S F. Transactions of Tianjin University, 2000, 2, 181.
29 Zeng Q, Wang X H, Yang P C, et al. Materials Characterization, 2019, 151, 203.
30 Zeng Q, Li K F, Fen-Chong T, et al. Construction and Building Mate-rials, 2012, 28(1), 468.
31 Hu S G, Zhang Y S, Ding Q J. Journal of Building Materials, 2000, 3(3), 202 (in Chinese).
胡曙光, 张云升, 丁庆军. 建筑材料学报, 2000, 3(3), 202.
32 Wu Z W, Lian H Z. High performance concret, China Railway Publishing House, China, 1999, pp. 24 (in Chinese).
吴中伟, 廉慧珍. 高性能混凝土, 中国铁道出版社, 1999, pp. 24.
33 Zajac M, Skocek J, Adu-Amankwah S, et al. Cement and Concrete Composites, 2018, 90, 178.
34 Guo Y C, Wu S L, Lyu Z H, et al. Construction and Building Materials, 2021, 269(1), 121262.
35 Katz A J, Thompson A H. Physical Review B Condens Matter, 1986, 34(11), 8179.
36 Yang Y K, Wang M R. Cement and Concrete Composites, 2018, 85, 92.