Etude expérimentale de l'évolution des propriétés thermophysiques d'un mortier par impédance thermique : correlation avecle contenu hydrique

TL;DRAbstract

This study presents experimental work concerning evaluation of thermophysicals properties of different mortars, with particular reference to their dependence on some other properties of the material such as, water cotent. An initial investigations was carried to study the use of thermal impedance for measuring the thermal effusivity of a mortar durng the early stages of hydration. The concept of impedance thermal is defined in the theoretical approaches. We propose a method of identification thermophysical of a mortar which allows the follow-up of complex evolutionary processes during its hydration, by reducing the time of analysis. The studied system and the instrumentation are presented. We take into account the effects of the presence of the flow meter on the system and the resistance of contact between the flow meter and studied material. The water migration during the run-time of the thermal tests has been avoided. We measure the temperatures and flows in the mortar surface to be

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