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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

42卷

期数:

2025年04期

页码:

115-123

栏目:

建筑材料

出版日期:

2025-07-10

文章信息/Info

Title:

Study on chloride ion diffusion in marine concrete based on long-term exposure test

文章编号:

1673-2049(2025)04-0115-09

作者:

马川义^1,2,渠广镇³,李帆^1,2,黄平明⁴,尚志强¹,袁阳光⁵

(1. 山东高速集团有限公司,山东 济南 250101; 2. 山东省高速公路技术和安全评估重点实验室,山东 济南 250101; 3. 济南大学 土木建筑学院,山东 济南 250022; 4. 长安大学 公路学院,陕西 西安 710064; 5. 西安建筑科技大学 土木工程学院,陕西 西安 710055)

Author(s):

MA Chuanyi^1,2, QU Guangzhen³, LI Fan^1,2, HUANG Pingming⁴, SHANG Zhiqiang¹, YUAN Yangguang⁵

(1. Shandong Hi-speed Group Co., Ltd., Jinan 250101, Shandong, China; 2. Shandong Key Laboratory of Highway Technology and Safety Assessment, Jinan 250101, Shandong, China; 3. School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, Shandong, China; 4. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 5. College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China)

关键词:

海工混凝土;  长期暴露试验;  氯离子扩散;  耐久性寿命

Keywords:

marine concrete;  long-term exposure test;  chloride ion diffusion;  durability life

分类号:

TU375

DOI:

10.19815/j.jace.2023.10014

文献标志码:

A

摘要:

为探究海洋环境下氯离子侵蚀扩散对混凝土结构耐久性的影响,开展了青岛胶州湾大桥暴露站暴露腐蚀14年内混凝土立方体试件的跟踪试验测试,分析大气区、浪溅区和水变区等不同腐蚀区域环境内混凝土氯离子浓度随暴露龄期的变化规律,提出了氯离子扩散系数与混凝土表面氯离子浓度时变模型,并对海洋环境下钢筋混凝土耐久寿命进行预估。结果表明:在暴露龄期为14年内,浪溅区混凝土氯离子侵蚀程度最为明显; 在暴露龄期为1、5、14年时,浪溅区构件在4 mm深度处的氯离子浓度分别是大气区的7.4倍、7.6倍和6.9倍; 混凝土氯离子扩散系数及表面氯离子浓度在1～3年的暴露龄期内变化尤为明显,而后变化逐渐趋于缓慢直至稳定; 随保护层厚度增加,混凝土结构抗氯离子耐久寿命逐渐增加,混凝土保护层厚度为70 mm时耐久性寿命相比保护层厚度为40 mm时提高约2倍; 结构耐久寿命受表面氯离子浓度、临界氯离子浓度及保护层厚度的影响敏感程度依次增加; 相关研究可为氯盐环境下混凝土结构耐久性设计与评估提供参考。

Abstract:

In order to explore the influence of chloride ion erosion and diffusion on the durability of concrete structures under marine environment, a tracking test was carried out on concrete cube specimens exposed to corrosion for 14 years at Qingdao Jiaozhou Bay bridge exposure station, and the change law of chloride ion concentration of concrete with exposure age in different corrosion areas such as atmospheric area, splash area and water-varying area was analyzed. A time-varying model of chloride ion diffusion coefficient and chloride ion concentration on concrete surface was proposed, and the durability of reinforced concrete under marine environment was predicted. The results show that the chloride ion erosion degree of concrete in the splash area is the most obvious during the exposure period of 14 years. At the exposure age of 1, 5, 14 years, the chloride ion concentration at the depth of 4 mm in the splash area is 7.4 times, 7.6 times and 6.9 times of that in the atmospheric area, respectively. The diffusion coefficient of concrete chloride ion and the surface chloride ion concentration change significantly within 1-3 years of exposure age, and then the change gradually tends to be slow until stable. With the increase of the protective layer thickness, the durability life of the concrete structure against chloride ions gradually increases. The durability life of the concrete structure with the protective layer thickness of 70 mm is about 2 times higher than that with the protective layer thickness of 40 mm. The sensitivity of structural durability life to surface chloride ion concentration, critical chloride ion concentration and protective layer thickness increases in turn. The relevant research can provide reference for the durability design and evaluation of concrete structures in chlorine environment.

参考文献/References:

[1] 应敬伟,钱邵同,覃盛昆.双轴受压下再生混凝土氯离子扩散规律[J].建筑科学与工程学报,2021,38(2):90-98.
YING Jingwei, QIAN Shaotong, QIN Shengkun. Chloride diffusion law in recycled concrete under biaxial compression[J]. Journal of Architecture and Civil Engineering, 2021, 38(2): 90-98.
[2]TIAN J, WU X W, ZHENG Y, et al. Investigation of damage behaviors of ECC-to-concrete interface and damage prediction model under salt freeze-thaw cycles[J]. Construction and Building Materials, 2019, 226: 238-249.
[3]鲍玖文,庄智杰,张 鹏,等.基于相似性的海洋潮汐区环境混凝土抗氯盐侵蚀性能研究进展[J].材料导报,2021,35(7):7087-7095.
BAO Jiuwen, ZHUANG Zhijie, ZHANG Peng, et al. Research progress of chloride corrosion resistance of concrete exposed to marine tidal environment based on similarity theory[J]. Materials Reports, 2021, 35(7): 7087-7095.
[4]姜凤娇.混凝土水泥水化、氯离子扩散及钢筋锈蚀的电化学分析[D].大连:大连理工大学,2020.
JIANG Fengjiao. Electrochemical analysis of cement hydration, chloride ion diffusion and steel corrosion of concrete[D]. Dalian: Dalian University of Technology, 2020.
[5]WANG Y Z, FU K. Comparisons of instantaneous chloride diffusion coefficients determined by RCM method and chloride natural diffusion test[J]. Construction and Building Materials, 2019, 223: 595-604.
[6]YANG C C, CHO S W, HUANG R. The relationship between charge passed and the chloride-ion concentration in concrete using steady-state chloride migration test[J]. Cement and Concrete Research, 2002, 32(2): 217-222.
[7]混凝土结构耐久性设计与施工指南:CCES 01—2004[S].北京:中国建筑工业出版社,2005.
Guide to durability design and construction of concrete structures: CCES 01—2004[S]. Beijing: China Architecture & Building Press, 2005.
[8]NOSRATZEHI N, MIRI M. Experimental investigation on chloride diffusion coefficient of self-compacting concrete in the Oman sea[J]. Periodica Polytechnica Civil Engineering, 2020: 647-657.
[9]ABABNEH A, BENBOUDJEMA F, XI Y P. Chloride penetration in nonsaturated concrete[J]. Journal of Materials in Civil Engineering, 2003, 15(2): 183-191.
[10]关博文,杨 涛,於德美,等.干湿循环作用下钢筋混凝土氯离子侵蚀与寿命预测[J].材料导报,2016,30(20):152-157.
GUAN Bowen, YANG Tao, YU Demei, et al. Chloride erosion and life prediction of steel reinforced concrete under dry and wet cycles[J]. Materials Reports, 2016, 30(20): 152-157.
[11]陈 昌,杨绿峰,余 波.海洋潮汐区混凝土表面氯离子浓度的时变规律及多因素模型[J].材料导报,2019,33(增2):321-326.
CHEN Chang, YANG Lyufeng, YU Bo. Multi-factor model and time-varying law for surface chloride concentration of concrete in marine tidal zone[J]. Materials Reports, 2019, 33(S2): 321-326.
[12]修建得,金祖权,李 宁,等.海洋盐雾环境下混凝土中氯离子传输研究进展[J].硅酸盐通报,2023,42(3):771-785.
XIU Jiande, JIN Zuquan, LI Ning, et al. Research progress of chloride ion transport in concrete under marine salt spray environment[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(3): 771-785.
[13]陆春华,宋泽鹏,李锺奥,等.氯盐与重复荷载共同作用下海工混凝土梁受弯性能退化分析[J].建筑科学与工程学报,2023,40(5):52-59.
LU Chunhua, SONG Zepeng, LI Zhongao, et al. Degradation analysis of flexural performance of marine concrete beams under combined action of chloride and repeated load[J]. Journal of Architecture and Civil Engineering, 2023, 40(5): 52-59.
[14]王胜年,黎鹏平,范志宏,等.环境和荷载共同作用下的海工混凝土结构耐久性[M].北京:科学出版社,2017.
WANG Shengnian, LI Pengping, FAN Zhihong, et al. Durability of marine concrete structure under the combined action of environment and load[M]. Beijing: Science Press, 2017.
[15]LIU J, LIAO C Y, JIN H S, et al. Numerical model of the effect of water vapor environment on the chloride transport in concrete[J]. Construction and Building Materials, 2021, 311: 125330.
[16]庞 龙,应宗权,范志宏,等.基于实测数据的港工混凝土结构环境荷载模型及耐久性分析[J].工程力学,2016,33(增1):168-172.
PANG Long, YING Zongquan, FAN Zhihong, et al. Environmental load model and durability analysis of harbor concrete structure based on measured data[J]. Engineering Mechanics, 2016, 33(S1): 168-172.
[17]General guidelines for durability design and redesign: DuraCrete BE 95-1347[S]. Denmark: The European Union, 2000.
[18]THOMAS M D A, BENTZ E C.Life-365 computer program for predicting the service life and life-cycle costs of reinforced concrete exposed to chlorides[R]. Farmington Hills: American Concrete Institute, 2000.
[19]金伟良,袁迎曙,卫 军,等.氯盐环境下混凝土结构耐久性理论与设计方法[M].北京:科学出版社,2011.
JIN Weiliang, YUAN Yingshu, WEI Jun, et al. Durability theory and design method of concrete structure in chloride environment[M]. Beijing: Science Press, 2011.
[20]ZHANG H F, ZHANG W P, GU X L, et al. Chloride penetration in concrete under marine atmospheric environment-analysis of the influencing factors[J]. Structure and Infrastructure Engineering, 2016: 1-11.
[21]FIB model code for concrete structures 2010: CEB-FIP[S]. Lausanne: FIB, 2013.
[22]海港工程高性能混凝土质量控制标准:JTS 257-2-2012[S].北京:人民交通出版社,2012.
Quality control standard of high performance concrete for sea port engineering: JTS 257-2-2012[S]. Beijing: China Communications Press, 2012.
[23]杨绿峰,蔡 荣,余 波.海洋大气区混凝土表面氯离子浓度的形成机理和多因素模型[J].土木工程学报,2017,50(12):46-55.
YANG Lufeng, CAI Rong, YU Bo. Formation mechanism and multi-factor model for surface chloride concentration of concrete in marine atmosphere zone[J]. China Civil Engineering Journal, 2017, 50(12): 46-55.
[24]刘玉美,杨 浪,饶 峰,等.氯离子对海工混凝土钢筋腐蚀的研究进展[J].硅酸盐通报,2023,42(9):3059-3074.
LIU Yumei, YANG Lang, RAO Feng, et al. Research progress of chloride ions on corrosion of marine concrete reinforcement[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(9): 3059-3074.
[25]既有混凝土结构耐久性评定标准: GB/T 51355—2019[S]. 北京: 中国建筑工业出版社, 2019.
Evaluation standard for durability of existing concrete structures: GB/T 51355—2019[S]. Beijing: China Architecture & Building Press, 2019.
[26]孙丛涛,刘诗群,牛荻涛,等.干湿循环条件下钢筋锈蚀的临界氯离子浓度[J].建筑材料学报,2016,19(2):385-389.
SUN Congtao, LIU Shiqun, NIU Ditao, et al. Critical chloride concentration of rebar corrosion under dry-wet cycles[J]. Journal of Building Materials, 2016, 19(2): 385-389.
[27]GJORV O E. 严酷环境下混凝土结构的耐久性设计[M].赵铁军,译.2版.北京:中国建材工业出版社,2015.
GJORV O E. Durability design of concrete structures in severe environments[M]. Translated by ZHAO Tiejun, 2nd ed. Beijing: China Building Material Press, 2015.

相似文献/References:

[1]胡红梅,宋明辉,姚志雄,等.提高海工混凝土抗氯离子渗透性的关键技术[J].建筑科学与工程学报,2009,26(01):7.
　HU Hong-mei,SONG Ming-hui,YAO Zhi-xiong,et al.Key Technology for Improving Resistance Against Chloride Ion Penetration of Marine Concrete[J].Journal of Architecture and Civil Engineering,2009,26(04):7.

备注/Memo

备注/Memo:

收稿日期:2023-10-12
基金项目:山东省自然科学基金项目(ZR2022QE054); 山东高速集团有限公司科技计划项目(HS2022B024)
作者简介:马川义(1987-),男,工程师,E-mail:machuanyi2006@163.com。
Author resume: MA Chuanyi(1987-), male, engineer, E-mail: machuanyi2006@163.com.

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更新日期/Last Update: 2025-07-10