Abstract
AN investigation of the durability of fired clay minerals revealed an unexpected hardening of kaolin on rehydration. Samples from Gordon, Victoria, fired at 500°–950° C., followed by rehydration in saturated steam at 200° C. for periods up to 96 hr., showed compressive strengths for small cylinders of 5,000–14,000 lb./sq. in., compared with strengths of 1,000–2,000 lb./sq. in. before rehydration. The compressive strength of the kaolin fired at 1,250° C. was 4,000 lb./sq. in.
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References
Bramao, L., Cady, J. G., Hendricks, S. B., and Swerdlow, M., Soil. Sci., 73, 273 (1952).
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HILL, R. Hardening of Kaolin on Rehydration. Nature 171, 567–568 (1953). https://doi.org/10.1038/171567a0
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DOI: https://doi.org/10.1038/171567a0
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