Throwing power of cathodic prevention applied by means of sacrificial anodes to partially submerged marine reinforced concrete piles: Results of numerical simulations

被引：50
作者：
Bertolini, Luca [1 ]
Redaelli, Elena [1 ]
机构：
[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20131 Milan, Italy
来源：
CORROSION SCIENCE | 2009年 / 51卷 / 09期
关键词：
Steel reinforced concrete; Modelling studies; Cathodic protection; Pitting corrosion; STEEL CORROSION;
D O I：
10.1016/j.corsci.2009.06.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The paper deals with the determination of current and potential distribution in reinforced concrete elements partially submerged in seawater aimed at predicting the throwing power of cathodic prevention applied by means of sacrificial anodes. Experimental results from previous laboratory tests showed that the throwing power of cathodic prevention is higher compared to that of cathodic protection [1]. In order to extend the results obtained on small-scale specimens to elements of higher dimensions, FEM numerical simulations of potential distribution were carried out. Several cases were considered, representative of conditions differing in electrochemical behaviour of steel bars, geometry of the pile and of sacrificial anodes, concrete resistivity. The results allowed to discuss the role of different factors on the throwing power that can be reached by using sacrificial anodes immersed in the seawater to protect reinforcing steel bars in the emerged part of a pile. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2218 / 2230
页数：13
相关论文
共 14 条
  • [1] [Anonymous], 2000, 126961 EN
  • [2] Prevention of steel corrosion in concrete exposed to seawater with submerged sacrificial anodes
    Bertolini, L
    Gastaldi, M
    Pedeferri, M
    Redaelli, E
    [J]. CORROSION SCIENCE, 2002, 44 (07) : 1497 - 1513
  • [3] Effects of cathodic prevention on the chloride threshold for steel corrosion in concrete
    Bertolini, L.
    Bolzoni, F.
    Gastaldi, M.
    Pastore, T.
    Pedeferri, P.
    Redaelli, E.
    [J]. ELECTROCHIMICA ACTA, 2009, 54 (05) : 1452 - 1463
  • [4] Bertolini L., 2013, Corrosion of steel in concrete: Prevention, diagnosis, repair
  • [5] BERTOLINI L, 1997, 97BTR0574 TNO BUIL C
  • [6] BERTOLINI L, 2004, P EUROCORR 2004 NIC, P1
  • [7] Performance of sacrificial anodes to protect the splash zone of concrete piles
    de Rincón, OT
    de Romero, MF
    de Carruyo, AR
    Sánchez, M
    Bravo, J
    [J]. MATERIALS AND STRUCTURES, 1997, 30 (203) : 556 - 560
  • [8] Newman J., 2021, Electrochemical Systems
  • [9] PAGE CL, 2007, DURABILITY CONCRETE, P156
  • [10] PASTORE T, 1992, P INT RILEM CSIRO AC, P189
12