Study on Resistance of Marine Silica-Fume Concrete in both Frost-Thaw Cycles and Chloride Penetration and its Microstructure (Part II)

Abstract:

A study was made from both macro and micro aspects into the resistance in frost-thaw cycles and chloride penetration of silica-fume concrete by simulating the characteristics of the marine environment and using the R-value evaluation method, MIP and SEM experiments. after concrete is under frost and thaw cycles by the erosion of seawater, the levels of the most probable pore radius and total porosity have a certain law of varying with the level of R-value, among which, an obvious relation of correspondence in a inverse proportion exists; the concrete mixed with silica fume has a poor ability of SO4²⁻ penetration resistance; the amount and types of superficial and internal corrosive products can reflect the reason of difference in concrete R-value, that is, when the R-value is high, the amount and types of superficial corrosive products are more than that of internal corrosive products. MIP and SEM micro analytical results can prove the macro conclusion of R-value evaluation method.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 2268-2271
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.2268
• Online since: May 2012
• Authors: Wen Wu Yang, Jue Shi Qian
• Keywords: Evaluation, Marine Concrete, Pore Structure, SEM

References

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