Title:
Control of Thermal Cracking of Concrete Structures
Author(s):
Mamdouh Elbadry and Amin Ghali
Publication:
Structural Journal
Volume:
92
Issue:
4
Appears on pages(s):
435-450
Keywords:
concretes; cracking (fracturing); loads (forces); prestressing; prestressed concrete; structural analysis; structures; temperature; tensile stress; thermal stresses; Structural Research
DOI:
10.14359/993
Date:
7/1/1995
Abstract:
It is well established that tensile stresses due to temperature can be high enough to produce cracking in concrete structures, and that thermal stresses are substantially alleviated when cracking occurs, causing a drop in stiffness. Analysis of thermal stresses in statically determinate and indeterminate concrete structures is reviewed, and an analytical model is described for determining the effects of progressive reduction in stiffness as cracks form on thermal stresses and internal forces in continuous structures. Design criteria and equations are presented for determining the minimum amount of reinforcement necessary to control cracking due to temperature.