THE EFFECT OF TEMPERATURE ON CREEP OF CONCRETE: A LITERATURE REVIEW.
Final rept. Jul 68-Jan 69,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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A review of the literature on the effect of elevated temperatures on the time-dependent volume change due to load creep of concrete reveals incomplete and conflicting evidence. Some workers have found a creep maximum at a particular temperature range others have not encountered this phenomenon. Among those who have found it, there is lack of agreement as to what the range is. All available data have been collected, reduced to comparable form, and analyzed. The analysis has been reviewed in the light of the several theories of the mechanism of concrete creep. It is concluded that the new results on temperature effects on creep do not resolve the conflicts among the various creep theories, but they tend to support the seepage theory more than any other. Many factors affecting creep are found to be influential at elevated temperatures in analogous fashion to their influence at room temperature. These factors include time under load, applied stress, maturity of concrete, and moisture content of concrete. The effect of temperature, at least up to 50 C, is to increase creep by a factor of two or three at 50 C. Author
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