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Computers and Concrete
  Volume 12, Number 4, October 2013, pages 431-442
DOI: http://dx.doi.org/10.12989/cac.2013.12.4.431
 


Equifield line simulation and ion migration prediction for concrete under 2-D electric field
Chih-Chien Liu, Wen-Ten Kuo and Chun-Yao Huang

 
Abstract
    This study attempted to find a proper method applicable to simulating practical equifield lines of two-dimensional Accelerate Lithium Migration Technique (ALMT), and evaluate the feasibility of using the theoretical ion migration model of one-dimensional ALMT to predict the ion migration behavior of two-dimensional ALMT. The result showed that the electrolyte or carbon plate can be used as matrix to draw equifield line graph similar to that by using mortar as matrix. Using electrolyte electrode module for simulation has advantages of simple production, easy measurement, rapidness, and economy. The electrolyte module can be used to simulate the equifield line distribution diagram in practical two-dimensional electrode configuration firstly. Then, several equifield line zones were marked, and several subzones under one-dimensional ALMT were separated from various equifield line zones. The theoretical free content distribution of alkali in concrete under two-dimensional electric field effect could be obtained from duration analysis.
 
Key Words
    electrochemical; alkali-silica reaction; migration; electrode
 
Address
Chih-Chien Liu and Wen-Ten Kuo: Department of Civil Engineering, ROC Military Academy, No.1, Wei-Wu Rd., Fengshan District, Kaohsiung 83059, Taiwan, R.O.C.
Chun-Yao Huang: Department of Civil Engineering, National Kaohsiung University of Applied Sciences, No. 415, Chien-Kung Rd., Sanmin District, Kaohsiung 80778, Taiwan, R.O.C.
 

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