[1]金立兵,王振豪,武 甜,等.受压混凝土中硫酸根离子的扩散与损伤机理分析[J].郑州大学学报(工学版),2024,45(02):121-128.[doi:10.13705/j.issn.1671-6833.2024.02.012]
 JIN Libing,WANG Zhenhao,WU Tian,et al.Analysis of Sulfate Ion Diffusion and Damage Mechanism in Compressed Concrete[J].Journal of Zhengzhou University (Engineering Science),2024,45(02):121-128.[doi:10.13705/j.issn.1671-6833.2024.02.012]
点击复制

受压混凝土中硫酸根离子的扩散与损伤机理分析()
分享到:

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
45卷
期数:
2024年02期
页码:
121-128
栏目:
出版日期:
2024-03-06

文章信息/Info

Title:
Analysis of Sulfate Ion Diffusion and Damage Mechanism in Compressed Concrete
作者:
金立兵 王振豪 武 甜 谢志恒 周 品
河南工业大学 土木工程学院,河南 郑州 450001
Author(s):
JIN Libing WANG Zhenhao WU Tian XIE Zhiheng ZHOU Pin
School of Civil Engineering, Henan University of Technology, Zhengzhou 450001, China
关键词:
混凝土 硫酸盐侵蚀 应力水平 离子扩散模型 细观模型 数值模拟
Keywords:
concrete sulfate attack stress level ion diffusion model mesoscopic model numerical simulation
分类号:
TU528
DOI:
10.13705/j.issn.1671-6833.2024.02.012
文献标志码:
A
摘要:
针对沿海、盐渍土环境下荷载和硫酸盐侵蚀的耦合作用对混凝土结构耐久性造成的损伤,提出了一种受 压混凝土中硫酸根离子扩散的数值模型。 首先,基于 Fick 第二定律,考虑应力和混凝土孔隙率之间的关系建立了 荷载作用下混凝土内硫酸根离子的理论扩散模型;其次,通过自编程序构建包含水泥砂浆、界面过渡区和天然骨料 的混凝土三相随机凸多边形骨料模型,从而实现了受压混凝土中硫酸根离子扩散的细观模拟;最后,通过与受压混 凝土在硫酸盐溶液中全浸泡的实验结果对比分析,验证了理论模型和细观模型的有效性。 进而对不同水灰比的受 压混凝土试件在不同浓度硫酸盐溶液中的离子扩散与损伤过程进行了数值分析,分析结果表明:随着压应力水平 的提高,同深度处硫酸根离子浓度逐渐减小;与压应力相比,侵蚀溶液浓度和水灰比对硫酸根离子扩散的影响更加 明显;水灰比对压应力抑制离子扩散程度的影响要大于侵蚀溶液浓度;适当减小水灰比更有利于受压状态下的混 凝土抵抗硫酸盐侵蚀。
Abstract:
In view of the damage to the durability of concrete structures caused by the coupled effects of loading and sulfate attack in coastal and saline soil environments, a numerical model for the sulfate ion diffusion in compressed concrete was proposed. Firstly, based on Fick′s second law, a theoretical diffusion model of sulfate ions in concrete under loading was established by considering the relationship between stress and concrete porosity. Secondly, a three-phase mesoscopic convex polygonal stochastic aggregate model of concrete containing cement mortar, interfacial transition zone, and natural aggregate was established by a self-programmed program, which enabled the mesoscopic simulation of sulfate ions diffusion in compressed concrete. Finally, the validity of the theoretical and mesoscopic models was verified by comparative analysis with the experiment results of full immersion of compressed concrete in a sulfate solution. Then the ion diffusion and damage process of compressed concrete specimens with different water-cement ratios in sulfate solutions of different concentrations were numerically analyzed. The findings indicate that the sulfate ion concentration at the same depth gradually decreased as the compressive stress level increased. The effects of sulfate concentration and the water-cement ratio on sulfate ion diffusion were more evident than with compressive stress. The extent to which compressive stress inhibited ion diffusion was influenced more by the water-cement ratio than by the sulfate concentration. Reducing the water-to-cement ratio appropriately made the compressed concrete more resistant to the sulfate attack.

参考文献/References:

[1] MIN H G, SONG Z G. Investigation on the sulfuric acid corrosion mechanism for concrete in soaking environment [ J ] . Advances in Materials Science and Engineering, 2018, 2018: 3258123. 

[2] BROWN P W, BADGER S. The distributions of bound sulfates and chlorides in concrete subjected to mixed NaCl, MgSO4 , Na2 SO4 attack[ J] . Cement and Concrete Research, 2000, 30(10) : 1535-1542. 
[3] XIE F, LI J P, ZHAO G W, et al. Experimental investigations on the durability and degradation mechanism of cast-in-situ recycled aggregate concrete under chemical sulfate attack [ J] . Construction and Building Materials, 2021, 297: 123771. 
[4] 黄冬. 不同机制下混凝土内 SO4 2- 传输-劣化机理研究 [D] . 徐州: 中国矿业大学, 2019.
 HUANG D. Study on the transport-degradation mechanism of SO4 2- in concrete under different conditions [ D ]. Xuzhou: China University of Mining and Technology, 2019. 
[5] 张浩, 乔文靖, 杨帆, 等. 强腐蚀桥梁钢 Q345 的 J-C 本构模型及数值模拟[ J] . 郑州大学学报( 工学版) , 2021, 42(6) : 99-104. 
ZHANG H, QIAO W J, YANG F, et al. Tensile finite element simulation of Q345 bridge steel with strong corrosion based on J-C model[ J] . Journal of Zhengzhou University (Engineering Science) , 2021, 42(6) : 99-104. 
[6] WANG H L, CHEN Z W, LI H D, et al. Numerical simulation of external sulphate attack in concrete considering coupled chemo-diffusion-mechanical effect[ J] . Construction and Building Materials, 2021, 292: 123325. 
[7] IKUMI T, SEGURA I. Numerical assessment of external sulfate attack in concrete structures [ J ] . Cement and Concrete Research, 2019, 121: 91-105.
 [8] WU T, JIN L B, FAN T, et al. A multi-phase numerical simulation method for the changing process of expansion products on concrete under sulfate attack[ J] . Case Studies in Construction Materials, 2023, 19: e02458.
 [9] YIN G J, ZUO X B, SUN X H, et al. Numerical investigation of the external sulfate attack induced expansion response of cement paste by using crystallization pressure [ J] . Modelling and Simulation in Materials Science and Engineering, 2019, 27(2) : 025006.
 [10] ZUO X B, SUN W, LI H, et al. Geometrical model for tortuosity of transport paths in hardened cement pastes [ J] . Advances in Cement Research, 2012, 24(3) : 145 -154.
 [11] 左晓宝, 孙伟. 硫酸盐侵蚀下的混凝土损伤破坏全过 程[ J] . 硅酸盐学报, 2009, 37(7) : 1063-1067. 
ZUO X B, SUN W. Full process analysis of damage and failure of concrete subjected to external sulfate attack[ J] . Journal of the Chinese Ceramic Society, 2009, 37 ( 7) : 1063-1067. 
[12] ZUO X B, SUN W, YU C. Numerical investigation on expansive volume strain in concrete subjected to sulfate attack[ J] . Construction and Building Materials, 2012, 36: 404-410. 
[13] 万旭荣. 硫酸盐侵蚀环境下的混凝土扩散反应规律研 究及数值模拟[D] . 南京: 南京理工大学, 2010. 
WAN X R. Study and numerical simulation of concrete diffusion reaction law under sulfate attack environment [ D] . Nanjing: Nanjing University of Science and Technology, 2010.
 [14] 关博文, 刘佳楠, 吴佳育, 等. 基于侵蚀损伤的混凝 土硫酸根离子传输行为 [ J] . 硅酸盐通报, 2020, 39 (10) : 3169-3174, 3183. 
GUAN B W, LIU J N, WU J Y, et al. Transport behavior of sulfate ions in concrete with attack damage [ J ] . Bulletin of the Chinese Ceramic Society, 2020, 39(10) : 3169-3174, 3183.  
[15] MASI M, COLELLA D, RADAELLI G, et al. Simulation of chloride penetration in cement-based materials [ J ] . Cement and Concrete Research, 1997, 27 ( 10 ) : 1591 -1601. 
[16] 苗艳春, 张玉, 雷闯, 等. 热力耦合途径下再生保温 混凝土 的 细 观 力 学 性 能 [ J] . 郑 州 大 学 学 报 ( 工 学 版) , 2021, 42(5) : 79-85. 
MIAO Y C, ZHANG Y, LEI C, et al. Meso-scale response of recycled aggregate thermal insulation concrete based on coupled thermo-mechanical modeling[ J] . Journal of Zhengzhou University ( Engineering Science ) , 2021, 42(5) : 79-85. 
[17] 金立兵, 余化龙, 王振清, 等. 再生混凝土抗氯离子 渗透的五相细观数值模拟[ J] . 郑州大学学报( 工学 版) , 2022, 43(1) : 83-89. 
JIN L B, YU H L, WANG Z Q, et al. Five-phase mesoscopic numerical simulation of chloride permeation resistance in recycled aggregate concrete [ J ] . Journal of Zhengzhou University ( Engineering Science) , 2022, 43 (1) : 83-89. 
[18] JIN L B, YU H L, FAN T, et al. Experimental and computational modeling of chloride transport behavior in fully recycled coarse aggregate concrete[ J] . Construction and Building Materials, 2022, 360: 129592.
 [19] JIANG Z L, HUANG Q H, XI Y P, et al. Experimental study of diffusivity of the interfacial transition zone between cement paste and aggregate[ J] . Journal of Materials in Civil Engineering, 2016, 28(10) : 129592.
 [20] CHEN J K, JIANG M Q, ZHU J. Damage evolution in cement mortar due to erosion of sulphate [ J] . Corrosion Science, 2008, 50(9) : 2478-2483.
 [21] 徐惠. 硫酸盐腐蚀下混凝土损伤行为研究[D] . 徐州: 中国矿业大学, 2012. 
XU H. Research on damage behavior of concrete under sulfate corrosion[D] . Xuzhou: China University of Mining and Technology, 2012.
 [22] PAUL A, LAURILA T, VUORINEN V, et al. Fick′ s laws of diffusion [ M] ∥ Thermodynamics, Diffusion and the Kirkendall Effect in Solids. Cham: Springer, 2014: 115-139.

相似文献/References:

[1]孙增智,田俊壮,杨凯,等.干湿循环作用下盐分对桥墩混凝土耐久性影响实验研究[J].郑州大学学报(工学版),2016,37(05):6.[doi:10.13705/j.issn.1671-6833.2016.05.002]
 Sun Zengzhi,Tian Junzhuang,Yang Kai,et al.Effect of Salt on Concrete Durability Under Dry-wet Cycle[J].Journal of Zhengzhou University (Engineering Science),2016,37(02):6.[doi:10.13705/j.issn.1671-6833.2016.05.002]
[2]赵娟,李倍.气候变化对中原地区桥梁碳化寿命影响研究[J].郑州大学学报(工学版),2016,37(06):68.[doi:10.13705/j.issn.1671-6833.2016.06.021]
 Zhao Juan,Li Bei.Research on Bridge Carbonation Life Influenced by Climate Change in Central Plains[J].Journal of Zhengzhou University (Engineering Science),2016,37(02):68.[doi:10.13705/j.issn.1671-6833.2016.06.021]
[3]王娟,王会娟,许耀群,等.单轴荷载作用下混凝土强度代表体尺寸定量研究[J].郑州大学学报(工学版),2018,39(01):12.[doi:10.13705/j.issn.1671-6833.2018.01.002]
 Wang Juan,Wang Huijuan,Xu Yaoqun,et al.Quantitative Study on the Representative Volume Element Size of Concrete Strength under Uniaxial Loading[J].Journal of Zhengzhou University (Engineering Science),2018,39(02):12.[doi:10.13705/j.issn.1671-6833.2018.01.002]
[4]付昌会,冯忠绪,张磊..搅拌方式对混凝土含气量及孔结构的影响[J].郑州大学学报(工学版),2011,32(02):42.[doi:10.3969/j.issn.1671-6833.2011.02.011]
[5]刘银芳,陈国荣,尤国英,等.基于microGA和有限元的混凝土坝热学参数反分析[J].郑州大学学报(工学版),2011,32(06):63.[doi:10.3969/j.issn.1671-6833.2011.06.015]
[6]郑娟荣,杨长利,陈有志..碱激发胶凝材料抗硫酸盐侵蚀机理的探讨[J].郑州大学学报(工学版),2012,33(03):1.[doi:10.3969/j.issn.1671-6833.2012.03.001]
[7]曾力,朱蕴东,赵卓..基于渗透性的混凝土力学和耐久性能指标相关性试验[J].郑州大学学报(工学版),2013,34(01):1.[doi:10.3969/j.issn.1671-6833.2013.01.001]
[8]杨卫忠,王云莉..一种新的混凝土二维强度准则[J].郑州大学学报(工学版),2008,29(04):120.[doi:10.3969/j.issn.1671-6833.2008.04.028]
[9]杨卫忠,樊濬..混凝土单轴受压本构模型及其应用[J].郑州大学学报(工学版),2006,27(01):1.[doi:10.3969/j.issn.1671-6833.2006.01.001]
 Yang Weizhong,Fan Huan.Concrete uniaxial compression constitutive model and its application[J].Journal of Zhengzhou University (Engineering Science),2006,27(02):1.[doi:10.3969/j.issn.1671-6833.2006.01.001]
[10]程红强,高丹盈,张启明..老混凝土表面粗糙度的一种简单测定法[J].郑州大学学报(工学版),2006,27(01):24.[doi:10.3969/j.issn.1671-6833.2006.01.006]
 CHENG Hongqiang,GAO Danying,Zhang Qiming.A simple method for determining the surface roughness of old concrete[J].Journal of Zhengzhou University (Engineering Science),2006,27(02):24.[doi:10.3969/j.issn.1671-6833.2006.01.006]

更新日期/Last Update: 2024-03-08