全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

全固态钢筋混凝土Cl-选择电极的制备与性能研究

DOI: 10.11903/1002.6495.2014.230, PP. 211-218

Keywords: Ag/AgCl电极,Cl-选择电极,混凝土,电极电位

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用高纯银箔(99.99%)的电化学氧化法制备了全固态卷压式Ag/AgCl电极,并用于混凝土中的Cl-浓度检测。该Cl-选择电极具有较大的比表面积和交换电流密度,以及较低的温度系数。在模拟混凝土孔隙液中的测试表明相比粉压式Ag/AgCl电极,卷压式电极具有更接近理论值的线性电压响应斜率(-58.2mV)和电位稳定性,在230d内电位波动不大于4mV。混凝土中Cl-浓度测量表明通过将电极表面包裹了一层PVA凝胶电解质薄膜,可显著提高其Cl-电位响应稳定性和抗干扰能力,且电极电位与混凝土中的lg[Cl-]之间具有良好线性度。表面分析证明,该卷压式电极不仅增加了电极的活性表面积,提高了电极的稳定性与反应活性;同时,借助于AgCl/Ag的多层堆叠,增强了AgCl颗粒与Ag基体间的附着力,提高了混凝土中Cl-的检测可靠性和电极的使用寿命。

References

[1]  Glass G, Buenfeld N. The influence of chloride binding on the chloride induced corrosion risk in reinforced concrete [J]. Corros. Sci., 2000, 42(2): 329
[2]  Martin Pérez B, Zibara H, Hooton R, et al. A study of the effect of chloride binding on service life preidictions [J]. Cem. Concr. Res., 2000, 30(8): 1215
[3]  Yuan Q, Shi C, Schutter G D, et al. Chloride binding of cement-based materials subjected to external chloride environment: A review [J]. Constr. Build. Mater., 2009, 23(1): 1
[4]  Ishida T, Miyahara S, Maruya T. Chloride binding capacity of mortars made with various Portland cements and mineral admixtures [J]. J. Adv. Concr. Technol., 2008, 6(2): 287
[5]  徐国良, 王彩辉. 结构混凝土耐久性影响因素的研究进展与探讨[J]. 材料导报, 2013, 27(11): 111
[6]  Glass G, Buenfeld N. Chloride-induced corrosion of steel in concrete [J]. Prog. Struct. Mater. Eng., 2000, 2(4): 448
[7]  Sun W, Mu R, Luo X, et al. Effect of chloride salt, freeze-thaw cycling and externally applied load on the performance of the concrete [J]. Cem. Concr. Res., 2002, 32(12): 1859
[8]  刘荣桂, 陈妤, 颜庭成. 氯盐环境条件下预应力混凝土氯离子侵蚀模型研究 [J]. 混凝土, 2006, (9): 1
[9]  王小刚, 史才军, 何富强等. 氯离子结合及其对水泥基材料微观结构的影响 [J]. 硅酸盐学报, 2013, 41(2): 187
[10]  Suryavanshi A, Scantlebury J, Lyon S. Corrosion of reinforcement steel embedded in high water-cement ratio concrete contaminated with chloride [J]. Cem. Concr. Compos., 1998, 20(4): 263
[11]  Shi X, Xie N, Fortune K, et al. Durability of steel reinforced concrete in chloride environments: An overview [J]. Constr. Build. Mater., 2012, 30: 125
[12]  Pack S W, Jung M S, Song H W, et al. Prediction of time dependent chloride transport in concrete structures exposed to a marine environment [J]. Cem. Concr. Res., 2010, 40(2): 302
[13]  Apostolopoulos C A, Demis S, Papadakis V G. Chloride-induced corrosion of steel reinforcement-mechanical performance and pit depth analysis [J]. Constr. Build. Mater., 2013, 38: 139
[14]  Ann K, Ahn J, Ryou J. The importance of chloride content at the concrete surface in assessing the time to corrosion of steel in concrete structures [J]. Constr. Build. Mater., 2009, 23(1): 239
[15]  庄其昌, 金祖权. 混凝土中氯离子浓度测定方法 [J]. 粉煤灰, 2010, (1): 25
[16]  Muralidharan S, Vedalakshmi R, Saraswathi V, et al. Studies on the aspects of chloride ion determination in different types of concrete under macro-cell corrosion conditions [J]. Build. Environ., 2005, 40(9): 1275
[17]  Castellote M, Alonso C, Andrade C, et al. Alkaline leaching method for the determination of the chloride content in the aqueous phase of hardened cementitious materials [J]. Cem. Concr. Res., 2001, 31(2): 233
[18]  Haque M, Kayyali O. Free and water soluble chloride in concrete[J]. Cem. Concr. Res., 1995, 25(3): 531
[19]  赵炜璇, 巴恒静. Ag/AgCl 氯离子传感器在混凝土中的应用 [J]. 功能材料, 2010, A(02): 371
[20]  Montemor M, Alves J, Simoes A, et al. Multiprobe chloride sensor for in situ monitoring of reinforced concrete structures [J]. Cem. Concr. Compos., 2006, 28(3): 233
[21]  Elsener B, Zimmermann L, B?hni H. Non destructive determination of the free chloride content in cement based materials [J]. Mater. Corros., 2003, 54(6): 440
[22]  Dong S G, Lin C J, Hu R G, et al. Effective monitoring of corrosion in reinforcing steel in concrete constructions by a multifunctional sensor [J]. Electrochim. Acta, 2011, 56(4): 1881
[23]  Climent Llorca M A, Viqueira Pérez E, López Atalaya M M. Embeddable Ag/AgCl sensors for in-situ monitoring chloride contents in concrete [J]. Cem. Concr. Res., 1996, 26(8): 1157
[24]  Tripathi S R, Ogura H, kawagoe H, et al. Measurement of chloride ion concentration in concrete structures using terahertz time domain spectroscopy (THz-TDS) [J]. Corros. Sci., 2012, 62: 5
[25]  董飒英, 廖延彪, 田芊等. 光纤传感技术在腐蚀监测中的应用 [J].分析科学学报, 2004, 20(5): 546
[26]  Kohri M, Ueda T, Mizuguchi H. Application of a near-infrared spectroscopic technique to estimate the chloride ion content in mortar deteriorated by chloride attack and carbonation [J]. J. Adv. Concr. Technol., 2010, 8(1): 15
[27]  Du R G, Hu R G, Huang R S, et al. In situ measurement of Cl - concentrations and pH at the reinforcing steel/concrete interface by combination sensors [J]. Anal. Chem., 2006, 78(9): 3179
[28]  Angst U, Vennesland . Detecting critical chloride content in concrete using embedded ion selective electrodes-effect of liquid junction and membrane potentials [J]. Mater. Corros., 2009, 60(8): 638
[29]  王金龙, 王佳, 贾红刚等. Ag/AgCl 固体参比电极研究与应用的现状与进展 [J]. 中国腐蚀与防护学报, 2013, 33(2): 81
[30]  尹鹏飞, 侯文涛, 许立坤等. 热浸涂银/氯化银和银/卤化银参比电极对比研究 [J]. 腐蚀科学与防护技术, 2010, (5): 407
[31]  张燕, 宋玉苏, 王源升. Ag/AgCl 参比电极性能研究 [J]. 中国腐蚀与防护学报, 2007, 27(3): 176
[32]  周海晖, 陈范才. Ag/AgCl 固体参比电极的研究 [J]. 腐蚀科学与防护技术, 2001, 13(4): 234
[33]  卫云鸽, 曹全喜, 雷梦碧等. 全固体 Ag/AgCl电极的制备工艺研究 [J]. 功能材料, 2010, A(03): 441
[34]  黄芳丽, 曹全喜, 卫云鸽等. Ag/AgCl 电极的制备及电化学性能[J]. 电子科技, 2010, 23(6): 29
[35]  张燕, 宋玉苏, 王源升. 电解型Ag/AgCl参比探头的制备及性能研究 [J]. 材料保护, 2007, 40(11): 59
[36]  Ipavec A, Vuk T, Gabrov?ek R, et al. Chloride binding into hydrated blended cements: The influence of limestone and alkalinity [J]. Cem. Concr. Res., 2013, 4: 874

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133