Temperature Change Effect on Behavior of Cement Paste, Mortar, and Concrete Under Load

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Title: Temperature Change Effect on Behavior of Cement Paste, Mortar, and Concrete Under Load

Author(s): Torben C. Hansen and Leif Eriksson

Publication: Journal Proceedings

Volume: 63

Issue: 4

Appears on pages(s): 489-504

Keywords: beam;cement paste; concrete; cracking; creep; deflection; internal damping; load; modulus of elasticity; mortar; research; temperature.

Date: 4/1/1966

Abstract:
Presents results of an experimental study of the effect of temperature changes between room temperature and 2 12 F on deflections of cement paste and mortar beams under load. It was found that: (a) cement paste and mortar beams deflect excessively when heated after application of load; (b) deflections occasionally lead to failure at low stresses and after moderate heating; (c) deflections increase with increasing rate of heating; (d) deflections are larger and the temperature at failure is lower for cement paste than for cement mortar; (e) deflections are larger and the temperature at failure is lower for saturated than for dry beams; (f) rapid rates of heating permanently reduces the modulus of elasticity of cement mortar, indicating internal destruction of the material structure; (g) thermal cycling leads to excessive deflections and occasionally to failure. A tentative explanation of the phenomena observed is suggested.