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Influence Mechanism of Complex Admixtures on Chloride Diffusion Coefficient of C50 Self-Compacting Concrete for Marine Environment

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Abstract:

The influence of complex admixture on chloride diffusion coefficient of C50 self-compacting concrete for marine environment was investigated by means of the NT BUILD 443 Test, and the influence mechanism of complex admixture on the diffusion coefficient was studied, respectively. The results showed that the chloride diffusion coefficient decreased first and then increased with increasing the fly ash content in complex cementitious, and when fly ash content was 10% or 20%, it got the lowest value at 28 days or 90 days, respectively. Its more helpful to promote the fly hydration degree for extending curing period. Furthermore, the porosity and average pore size decreased first but then increased with increasing the fly ash content in complex cementitious, the porosity and average pore size got the lowest value when the fly ash content was 20% in cementitous.

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Periodical:

Applied Mechanics and Materials (Volume 312)

Pages:

830-834

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.312.830

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Online since:

February 2013

Authors:

Peng Ping Li, Zhi Hong Fan, Jian Bo Xiong

Keywords:

Chloride Diffusion Coefficient, Complex Admixture, Pore Structure, Self-Compacting Concrete (SCC)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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