Abstract
SWAINGER1 has stated recently that an increase in volume occurs during the plastic flow of duralumin specimens under a tensile test. While it is generally assumed that volume is unchanged during plastic flow, we should like to point out that, in 1939, Glanville and Thomas2 showed that the creep of concrete in compression was characterized by a decrease in volume. The concrete, in fact, flowed into its own voids.
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References
Swainger, K. H., Nature, 158, 165 (1946).
Glanville, W. H., and Thomas, F. G., Building Research Technical Paper, No. 21. (London: H.M. Stationery Office, 1939).
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LEE, A., REINER, M. & RIGDEN, P. Volume Flow of Plastic Materials. Nature 158, 706 (1946). https://doi.org/10.1038/158706b0
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DOI: https://doi.org/10.1038/158706b0
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