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Numerical Simulation of the Hot Weather on Concrete at Early Age
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DOI: https://doi.org/10.15866/irece.v7i6.10618
Abstract
The objective of our present work is based on the study by numerical simulation, in two dimensions, of concrete behavior at an early age during the first 24 hours of hydration under severe conditions of temperature and wind speed using a COMSOL Multiphysics simulation. The temperature was maintained at 55°C for the first 7 h, then from the 8th hour to 24th hour decreasing down to 25 °C, with a 12 km/h wind speed. The model describes two divided domains air and the concrete slab. The obtained results allow us to better understand the temperature variation phenomena in the slab by heat transfer taking into account the release of heat due to the exothermic reactions of cement hydration as well as the influence of a high wind speed, while varying the thickness of the slab studied and the w/c ratio.
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