Volume 37 Issue 11
Nov.  2020
Turn off MathJax
Article Contents
LI Chuang, FAN Yingfang, LI Qiuchao. Influence of metakaolin on passivation of reinforcing steel in cement mortar[J]. Acta Materiae Compositae Sinica, 2020, 37(11): 2917-2927. doi: 10.13801/j.cnki.fhclxb.20200305.001
Citation: LI Chuang, FAN Yingfang, LI Qiuchao. Influence of metakaolin on passivation of reinforcing steel in cement mortar[J]. Acta Materiae Compositae Sinica, 2020, 37(11): 2917-2927. doi: 10.13801/j.cnki.fhclxb.20200305.001

Influence of metakaolin on passivation of reinforcing steel in cement mortar

doi: 10.13801/j.cnki.fhclxb.20200305.001
  • Received Date: 2019-12-27
  • Accepted Date: 2020-02-22
  • Available Online: 2020-03-05
  • Publish Date: 2020-11-15
  • The effect of metakaolin (MK) amount (accounting for 20wt%, 30wt% and 40wt% of the total mass of MK/cement mortar) on the passivation film formation and corrosion resistance of passivation film of reinforcing steel in MK/cement mortar was studied by eletrochemical impedance spectroscopy, cyclic potentiodynamic polarization, cathodic polarization, thermogravimetric analysis and diffraction of XRD. The results indicate that the reinforcing steel can form stable passivation film in steel-MK/cement mortar with different MK contents in general environment. In the solution environment of 3.5wt% mass fraction of NaCl, excessive amount of MK reduces the stability of passive film and the corrosion resistance of reinforcing steel in steel-MK/cement mortar. Considering the stability of passive film, the content of MK in cement-based materials should be limited in chloride environment.

     

  • loading
  • [1]
    STEFANONI M, ANGST U, ELSENER B. Corrosion rate of carbon steel in carbonated concrete: A critical review[J]. Cement and Concrete Research,2018,103:35-48. doi: 10.1016/j.cemconres.2017.10.007
    [2]
    柳俊哲, 沈建生, 闫加利, 等. 碳化与氯盐腐蚀作用下钢筋锈蚀物的微结构特征[J]. 复合材料学报, 2018, 35(9):2587-2592.

    LIU J Z, SHEN J S, YAN J L, et al. Microstructural characteristics of steel corrosion products under carbonation and chloride salt[J]. Acta Materiae Compositae Sinica,2018,35(9):2587-2592(in Chinese).
    [3]
    POON C S, LAM L, KOU S C, et al. Rate of pozzolanic reaction of metakaolin in high-performance cement pastes[J]. Cement and Concrete Research,2001,31(9):1301-1306.
    [4]
    COURARD L, DARIMONT A, SCHOUTERDEN M, et al. Durability of mortars modified with metakaolin[J]. Cement and Concrete Research,2003,33(9):1473-1479. doi: 10.1016/S0008-8846(03)00090-5
    [5]
    乔春雨, 倪文, 王长龙. 较大偏高岭土掺量下偏高岭土-水泥硬化浆体性能与微观结构[J]. 建筑材料学报, 2015, 18(3):393-399. doi: 10.3969/j.issn.1007-9629.2015.03.007

    QIAO C Y, NI W, WANG C L. Properties and microstructure of metakaolin(MK)-cement hardened slurry with high use level of MK[J]. Journal of Building Materials,2015,18(3):393-399(in Chinese). doi: 10.3969/j.issn.1007-9629.2015.03.007
    [6]
    MO L, LV L, DENG M, et al. Influence of fly ash and metakaolin on the microstructure and compressive strength of magnesium potassium phosphate cement paste[J]. Cement and Concrete Research,2018,111:116-129. doi: 10.1016/j.cemconres.2018.06.003
    [7]
    李福海, 张桂斌, 周鸿屹, 等. 高活性偏高岭土及粉煤灰对碱骨料反应的抑制作用[J]. 建筑材料学报, 2017, 20(6):876-880. doi: 10.3969/j.issn.1007-9629.2017.06.008

    LI H F, ZHANG G B, ZHOU H Y, et al. Inhibiton effect of super metakaolin and fly ash on alkali-silica reaction in concrete[J]. Journal of Building Materials,2017,20(6):876-880(in Chinese). doi: 10.3969/j.issn.1007-9629.2017.06.008
    [8]
    KHATIB J M, WILD S. Sulphate resistance of metakaolin mortar[J]. Cement and Concrete Research,1998,28(1):83-92. doi: 10.1016/S0008-8846(97)00210-X
    [9]
    国家质量技术监督局. 水泥胶砂强度检验方法(ISO法): GB/T 17671—1999[S]. 北京: 中国标准出版社, 1999.

    State Bureau of Quality and Technical Supervision. Method of testing cements: Determination of strength: GB/T 17671—1999[S]. Beijing: China Standards Press, 1999(in Chinese).
    [10]
    中华人民共和国国家质量监督检验检疫总局. 通用硅酸盐水泥: GB 175—2007[S]. 北京: 中国标准出版社, 2007.

    General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China. Common portland cement: GB 175—2007[S]. Beijing: China Standards Press, 2007(in Chinese).
    [11]
    BABAEE M, CASTEL A. Chloride-induced corrosion of reinforcement in low-calcium fly ash-based geopolymer concrete[J]. Cement and Concrete Research,2016,88:96-107. doi: 10.1016/j.cemconres.2016.05.012
    [12]
    SONG G. Equivalent circuit model for AC electrochemical impedance spectroscopy of concrete[J]. Cement and Concrete Research,2000,30(11):1723-1730. doi: 10.1016/S0008-8846(00)00400-2
    [13]
    TANG F, CHEN G, VOLZ J S, et al. Cement-modified enamel coating for enhanced corrosion resistance of steel reinforcing bars[J]. Cement and Concrete Composites,2013,35(1):171-180. doi: 10.1016/j.cemconcomp.2012.08.009
    [14]
    ZHENG H, DAI J G, POON C S, et al. Influence of calcium ion in concrete pore solution on the passivation of galvanized steel bars[J]. Cement and Concrete Research,2018,108:46-58. doi: 10.1016/j.cemconres.2018.03.001
    [15]
    姬永生, 王志龙, 徐从宇, 等. 混凝土中钢筋腐蚀过程的极化曲线分析[J]. 浙江大学学报(工学版), 2012, 46(8):1457-1464.

    JI Y S, WANG Z L, XU C Y, et al. Study on polarization curve diagrams of steel corrosion in concrete[J]. Journal of Zhejiang University (Engineering Science),2012,46(8):1457-1464(in Chinese).
    [16]
    MONTICELLI C, NATALI M E, BALBO A, et al. A study on the corrosion of reinforcing bars in alkali-activated fly ash mortars under wet and dry exposures to chloride solutions[J]. Cement and Concrete Research,2016,87:53-63. doi: 10.1016/j.cemconres.2016.05.010
    [17]
    施锦杰, 孙伟, 耿国庆. 模拟混凝土孔溶液对钢筋钝化的影响[J]. 建筑材料学报, 2011, 14(4):452-458. doi: 10.3969/j.issn.1007-9629.2011.04.004

    SHI J J, SUN W, GENG G Q. Influence of simulated concrete pore solution on reinforcing steel passivation[J]. Journal of Building Materials,2011,14(4):452-458(in Chinese). doi: 10.3969/j.issn.1007-9629.2011.04.004
    [18]
    ASTM International. Standard test method for corrosion potentials of uncoated reinforcing steel in concrete: ASTM C876—09[S]. West Conshohocken: ASTM International, 2009.
    [19]
    SERDAR M, POYET S, L'HOSTIS V, et al. Carbonation of low-alkalinity mortars: Influence on corrosion of steel and on mortar microstructure[J]. Cement and Concrete Research,2017,101:33-45.
    [20]
    PECH-CANUL M A, CASTRO P. Corrosion measurement of steel reinforcement in concrete exposed to a tropical marine atmosphere[J]. Cement and Concrete Research,2002,32(3):491-498. doi: 10.1016/S0008-8846(01)00713-X
    [21]
    VEDALAKSHMI R, PALANISWAMY N. Analysis of the electrochemical phenomenon at the rebar-concrete interface using the electrochemical impedance spectroscopic technique[J]. Magazine of Concrete Research,2010,62(3):177-189. doi: 10.1680/macr.2010.62.3.177
    [22]
    LIU E, GHANDEHARI M, BRÜCKNER C, et al. Mapping high pH levels in hydrated calcium silicates[J]. Cement and Concrete Research,2017,95:232-239. doi: 10.1016/j.cemconres.2017.02.001
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(14)  / Tables(8)

    Article Metrics

    Article views (1401) PDF downloads(38) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return