Effect of the Interfacial Transition Zone on the Migration Behavior of Cations under the Accelerated Lithium Migration Technique

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This paper researches the effect of the interfacial transition zone (ITZ) on the migration behavior of cations under the Accelerated Lithium Migration Technique (ALMT). Cylindrical mortars with different aggregate volume fractions (Vf) and w/c=0.5 were used. The result shows that when Vf ≤ 20 %, the Li+ steady state migration coefficient (Ds) is influenced by the dilution and tortuosity effects of the aggregate. The combined effect of ITZ and percolation occurs at Vf = 30 %, and the effects increase with the increase in Vf. Based on the experimental and regression analysis results, when the assumed thickness of ITZ = 20 μm, the approximate Ds of ITZ and percolated ITZ are 46.4 and 52.6 times the matrix migration coefficient.

Info:

Periodical:

Advanced Materials Research (Volumes 250-253)

Edited by:

Guangfan Li, Yong Huang and Chaohe Chen

Pages:

3743-3747

DOI:

10.4028/www.scientific.net/AMR.250-253.3743

Citation:

C. C. Liu and W. C. Wang, "Effect of the Interfacial Transition Zone on the Migration Behavior of Cations under the Accelerated Lithium Migration Technique", Advanced Materials Research, Vols. 250-253, pp. 3743-3747, 2011

Online since:

May 2011

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$38.00

[1] C.C., Liu, Identify the reactivity of aggregates in Taiwan and using electrochemical techniques to mitigate expansion due to alkali-aggregate reaction in concrete (Ph.D. Dissertation, Department of Civil Engineering, National Central University, ChungLi, Taiwai 2003) (in Chinese).

[2] S. Mindess, J.F. Young, and D. Darwin, Concrete (Second Edition, Prentice Hall 2003).

[3] C.C. Yang, Mater. Chem. Phys. Vol. 91, No. 3 (2005), p.538.

[4] C.C. Yang, and S.W. Cho, Mater. Chem. Phys. Vol. 80, No. 3 (2003), p.752.

[5] W.C. Wang, C.C. Liu, and C. Lee, Effective ASR inhibiting length and applied electrical field under accelerated lithium migration technique (4th ACF International Conference, Taipei 2010).

[6] J. Kropp, H.K. Hilsdorf, Performance Criteria for Concrete Durability (RILEM REPORT 12, E & FN SPON 1995).

[7] C.C. Liu, W.C. Wang, and C. Lee, J. Mar. Sci. Technol. Vol. 19, No. 1 (2011). (In Press).

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