[1]蒋志律,付传清,严文杰.轴拉疲劳荷载下损伤混凝土氧气传输性能[J].西安建筑科技大学学报(自然科学版),2023,55(04):540-545.[doi:10.15986/j.1006-7930.2023.04.008 ]
　JIANG Zhil,FU Chuanqing,YAN wenjie.Oxygen diffusion property of damaged concrete under axial tension fatigue loads[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2023,55(04):540-545.[doi:10.15986/j.1006-7930.2023.04.008 ]
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轴拉疲劳荷载下损伤混凝土氧气传输性能()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
55
期数:
2023年04期
页码:
540-545
栏目:
出版日期:
2023-10-26

文章信息/Info

Title:
Oxygen diffusion property of damaged concrete under axial tension fatigue loads
文章编号:
1006-7930(2023)04-0540-06
作者:
蒋志律; 付传清; 严文杰
(浙江工业大学 土木工程学院，浙江 杭州 310014)
Author(s):
JIANG Zhilü;  FU Chuanqing;  YAN wenjie
(School of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China)
关键词:
疲劳损伤;  氧气扩散;  核磁共振;  混凝土
Keywords:
fatigue damage;  oxygen diffusion;  nuclear magnetic resonance;  concrete
分类号:
TU375
DOI:
10.15986/j.1006-7930.2023.04.008
文献标志码:
A
摘要:
氧气作为侵蚀介质参与钢筋混凝土结构的锈蚀破坏过程,因此,氧气扩散系数是结构耐久性预测模型的必要参数.针对实际服役中的混凝土结构,研究疲劳损伤混凝土氧气扩散系数与损伤变量的关系.研究结果表明:随着混凝土疲劳损伤度增加,小孔径孔隙比例先增后减; 混凝土氧气扩散系数随着损伤度增大而增大,损伤度较大时增长速率较快; 结合多孔材料气体扩散理论,建立了混凝土氧气扩散系数与损伤度、初始孔隙率的关系式,为海洋环境下混凝土结构耐久性预测提供理论基础.
Abstract:
Oxygen is involved in the corrosion failure process of reinforced concrete structures as an erosion medium, so the oxygen diffusion coefficient is a necessary parameter for the prediction model of structural durability. In this paper, the relationship between oxygen diffusion coefficient and damage variable of fatigue damage concrete is studied for concrete structure in actual service. The results show that with the increase of fatigue damage degree of concrete, the proportion of small pore size increases first and then decreases. The oxygen diffusivity of concrete increases with the increase of damage degree, and the growth rate is larger at a greater damage degree. Based on the gas diffusion theory of porous materials, the function for oxygen diffusivity is established using damage degree and initial porosity, which provides a theoretical basis for predicting the durability of concrete structures in marine environment.

参考文献/References:

[1]周露泉, 金南国, 付传清, 等. 干燥条件下水泥基材料中氧气扩散预测模型[J]. 硅酸盐学报, 2018, 46(8): 1133-1140.
ZHOU Luquan, JIN Nanguo, FU Chuanqing, et al. Prediction model of oxygen diffusion in cement-based materials[J]. Journal of the Chinese Ceramic Society, 2018, 46(8): 1133-1140.
[2]ZHOU R Z, LI Q, WANG JD, et al. Assessment of electrical resistivity and oxygen diffusion coefficient of cementitious materials from microstructure features[J]. Materials, 2021, 14(12): 31-41.
[3]罗大明,牛荻涛.不同湿度环境下内养护混凝土气体传输性能试验研究[J].建筑结构学报,2021,42(8):193-203.
LUO Daming, NIU Ditao. Gas transportation properties of internal cured concrete under different moisture conditions[J]. Jouranl of Building Structures, 2021,42(8):193-203.
[4]罗大明,牛荻涛,苏丽.荷载与环境共同作用下混凝土耐久性研究进展[J].工程力学,2019,36(1):1-14,43.
LUO Daming, NIU Ditao, SU Li. Research progress on durability of stressed concrete under environmental actions[J]. Engineering Mechnanics, 2019, 36(1): 1-14,43.
[5]KURUMATANI M, ANZO H, KOBAYASHI K, et al. Damage model for simulating chloride concentration in reinforced concrete with internal cracks[J]. Cement and Concrete Composites, 2017:62-73
[6]FU C Q, YE H L, JIN X Y, et al. Chloride penetration into concrete damaged by uniaxial tensile fatigue loading[J]. Construction and Building Materials, 2016, 125(84): 714-723.
[7]HUANG Y X, Y E H L, FU C Q, et al. Modeling moisture transport at the surface layer of fatigue-damaged concrete[J]. Construction and Building Materials, 2017, 151: 196-207.
[8]牛荻涛,陆炫毅,苗元耀,等. 盐雾环境下疲劳损伤混凝土氯离子扩散性能[J]. 西安建筑科技大学(自然科学版), 2015, 47(5): 617-621.
NIU Ditao, LU Xuanyi, MIAO Yuanyao, et al. Diffusion of chloride ions into fatigue-damaged concrete in salt spray environment[J]. J. Xi'an Univ. of Arch.& Tech.(Natural Science Edition), 2015, 47(5): 617-621.
[9]VILLANi C, LOSEr R, WEST M, et al. An inter lab comparison of gas transport testing procedures: Oxygen permeability and oxygen diffusivity[J]. Cement and Concrerte Composites, 2014, 53: 357-366.
[10]HE R, LI S Y, FU C Q, et al. Influence of cyclic drying-wetting and carbonation on oxygen diffusivity of cementitious materials: interpretation from the perspective of microstructure[J]. Journal of Materials in Civil Engineering, 2022, 34(10): 04022256.
[11]FU C Q, LING Y F, WANG K J. An innovation study on chloride and oxygen diffusions in simulated interfacial transition zone of cementitious material[J]. Cement and Concrete Composites, 2020, 110: 103585.
[12]汤玉娟, 左晓宝, 殷光吉. 基于孔结构参数的混凝土气体扩散模型[J]. 建筑材料学报, 2015, 18(6): 976-981.
TANG Yujuan, ZUO Xiaobao, YIN Guangji. Gas diffusion model in concrete based on pore structural parameters[J]. Journal of Building Materials, 2015, 18(6): 976-981.
[13]朱劲松. 混凝土双轴疲劳试验与破坏预测理论研究[D]. 大连: 大连理工大学, 2003.
ZHU Jingsong. Study on biaxial fatigue test and failure prediction theory of concrete[D]. Dalian: Dalian University of Technology, 2003.
[14]卫军, 李松林, 董荣珍, 等. 考虑残余变形影响的混凝土疲劳损伤本构模型[J]. 湖南大学学报(自然科学版), 2016, 43(7): 57-61.
WEI Jun, LI Songlin, DONG Rongzhen, et al. Fatigue damage constitutive model of concrete considering the effect of residual deformation[J]. Journal of Hunan University(Natural Science), 2016, 43(7): 57-61.
[15]YADAV I N, THAPA K B. Fatigue damage model of concrete materials[J]. Theoretical and Applied Fracture Mechanics, 2020, 108: 102578.
[16]WEI Jun,LI Songlin, D Rongzhen, et al. Fatigue damage constitutive model of concrete considering the effect of residual deformation[J]. Journal of Hunan University Natural Sciences, 2016, 43(7): 57-61.
[17]ANDRADE C. Types of models of service life of reinforcement: the case of the resistivity[J]. Concrete Research Letters, 2010, 1(2): 73-80.
[18]弗兰克, P.英克鲁佩勒, 大卫. 传热和传质基本原理(原著第六版)[M]. 化学工业出版社, 2007.
INCROPERS F P, De Will D P. Fundamentals of Heat and Mass Transfer[M]. Chemical Industry Press, 2007.
[19]HOUST Y F, WITTMANN F H. Influence of po-rosity and water content on the diffusivity of CO2 and O2 through hydrated cement paste[J]. Cement and Concrete Reasearch, 1994, 24(6): 1165-1176.

相似文献/References:

[1]牛荻涛,陆炫毅,苗元耀,等.盐雾环境下疲劳损伤混凝土氯离子扩散性能[J].西安建筑科技大学学报(自然科学版),2015,47(05):617.[doi:DOI：10.15986/j.1006-7930.2015.05.001]
　NIU Ditao,LU Xuanyi,MIAO Yuanyao,et al.Diffusion of chloride ions into fatigue-damaged concrete in salt spray environment[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2015,47(04):617.[doi:DOI：10.15986/j.1006-7930.2015.05.001]

备注/Memo

备注/Memo:
收稿日期:2022-11-11修回日期:2023-07-18
基金项目:浙江省自然科学基金项目(LZ20E080003， LR21E080002); 国家自然科学基金(51978620， 52178232)
第一作者:蒋志律(1987—)，男，博士，讲师，主要研究方向为混凝土结构耐久性.E-mail:zljiang@zjut.edu.cn
更新日期/Last Update: 2023-08-28