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Carbonation resistance of sulphoaluminate cement-based high performance concrete

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Abstract

The influences of water/cement ratio and admixtures on carbonation resistance of sulphoaluminate cement-based high performance concrete (HPC) were investigated. The experimental results show that with the decreasing water/cement ratio, the carbonation depth of sulphoaluminate cement-based HPC is decreased remarkably, and the carbonation resistance capability is also improved with the adding admixtures. The morphologies and structure characteristics of sulphoaluminate cement hydration products before and after carbonation were analyzed using SEM and XRD. The analysis results reveal that the main hydration product of sulphoaluminate cement, that is ettringite (AFt), decomposes after carbonation.

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Correspondence to Decheng Zhang  (张德成).

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Funded by the National Natural Science Foundation of China (No.50872043)

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Zhang, D., Xu, D., Cheng, X. et al. Carbonation resistance of sulphoaluminate cement-based high performance concrete. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 24, 663–666 (2009). https://doi.org/10.1007/s11595-009-4663-y

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  • DOI: https://doi.org/10.1007/s11595-009-4663-y

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