Thermal Analysis of Thick Concrete Sections


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Title: Thermal Analysis of Thick Concrete Sections

Author(s): S. J. Thurston, M. J. N. Priestley, and N. Cdoke

Publication: Journal Proceedings

Volume: 77

Issue: 5

Appears on pages(s): 347-357

Keywords: box beams; computer programs; concrete slabs; cooling; creep properties; deformation; girders; heat of hydration; heat transfer; hydration;mass concrete;modulus of elasticity;shrinkage;stress analysis;stresses;tempurature;tempurature rise (in concrete).

Date: 9/1/1980

Thermal analysis of thick concrete sections subjected to heat-of-hydration release and surface heat transfer is discussed. The analysis technique developed, which forms the basis of a computer program, considers transient hea t-flow analysis, thermal stress analysis, and the interactive effects of creep and shrinkage. Although temperature analysis is limited to linear hea t-flow simulation, several independent heat paths with different thermal and structural characteristics can be simultaneously modeled and merged in the overall stress analysis. Comparison between predicted and measured temperatures and stresses are reported for two structural slabs during hydration, and for a box girder model subjected to top surface radiative heat input.