FraMCoS 10 2019 Bayonne, France

Thermoelastic multiscale analysis of concrete pavements subjected to hail showers

Climate change is likely to increase the occurrence of extreme weather events. Thus, concrete pavements will likely be subjected more frequently to hail showers within their service life. Theirinfluenceonthestructuralbehaviorofthepavementsisstudiedbymeansofthermoelasticmulti- scale analysis. Firstly, the stiffness and the thermal expansion coefficient of…

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Year 2019
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Abstract

Climate change is likely to increase the occurrence of extreme weather events. Thus, concrete pavements will likely be subjected more frequently to hail showers within their service life. Theirinfluenceonthestructuralbehaviorofthepavementsisstudiedbymeansofthermoelasticmulti- scale analysis. Firstly, the stiffness and the thermal expansion coefficient of concrete are homogenized by means of a multiscale thermoporoelastic model, based on knowledge of the microstructural com- positionandthepropertiesofthemicrostructuralconstituents. Thequantifiedthermoelasticproperties serve as input for macroscopic structural analysis of a concrete pavement subjected to thermomechan- ical loading. It delivers the temperature fields and macroscopic stress and strain states of the concrete. Finally, top-down scale transition is used to quantify the average microstresses of the cement paste and the aggregates.