Title: Prediction of the Thermal Coefficient
of Expansion of Concrete
Author(s): Jack H. Emanuel and J. Leroy Hulsey
Publication: Journal Proceedings
Appears on pages(s): 149-155
Keywords: age;aggregates; bridges (structures);cement pastes: concretes; expansion; fineness; limestone; mix proportioning; moisture content; portland cements; temperature;thermal expansion: thermal properties; thermal stresses;volume
A review of the literature identifies age, moisture content, and proportion of the mix as the principal factors affecting the thermal coefficient of expansion of concrete. From the discussion, correction factors and an empirical equation are developed which take into account these factors. Coefficients are calculated for twelve sets of reported data and compare favorably with the reported values. Although the resultant values would be subject to fluctuation resulting from environmental effects, the equation provides a realistic value for design consideration of thermal movements and resultant stresses.