Conference Proceedings

Parametric study of the effect of thermal properties and ambient temperature on tensile stress and strength development in mass concrete

A Zhong, M Sofi, E Lumantarna, P Mendis

FIB 2018 - Proceedings for the 2018 fib Congress: Better, Smarter, Stronger | The International Federation for Structural Concrete (FIB) | Published : 2019

Abstract

Thermal stress typically takes place at early ages when concrete is undergoing exothermic hydration reaction and is restricted from expansion and contraction by surrounding structural elements. In mass concrete structures, the relatively large temperature differences between the core and the surface produce differential dilation which leads to tensile stresses. Potential tensile cracks develop when the stress experienced by the concrete exceeds the concurrent strength of the maturing concrete. This effect in turn can lead to performance reduction, or in some instances, instability of structure and must be dealt with care. While published literature reports extensively on hydration based mech..

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