Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microstructure et propriétés physico-chimiques de bétons autoplaçants chauffés de 20 à 600°C
This paper presents an experimental study on the performance of self-compacting concrete (SCC), subjected to high temperatures. Three SCC mixtures and one vibrated concrete mixture were tested. Three concretes mixtures are coming from the French National Project B@P. The specimens of each concrete are heated at a rate of 1°C/min up to different temperatures (150, 300, 450 and 600°C). In order to ensure a uniform temperature throughout the specimen, the temperature is held constant at the temperature stage for one hour before cooling. Mechanical properties at ambient temperature and residual mechanical properties after heating have already been determined. We study the physico-chemical properties and the microstuctural characteristics. Thermogravimetric analysis, thermodifferential analysis, X-ray diffraction and microscopic observations with SEM are used. The aim of these studies is in particular to explain the observed residual compressive strength increase between 150 and 300°C.
Microstructure et propriétés physico-chimiques de bétons autoplaçants chauffés de 20 à 600°C
This paper presents an experimental study on the performance of self-compacting concrete (SCC), subjected to high temperatures. Three SCC mixtures and one vibrated concrete mixture were tested. Three concretes mixtures are coming from the French National Project B@P. The specimens of each concrete are heated at a rate of 1°C/min up to different temperatures (150, 300, 450 and 600°C). In order to ensure a uniform temperature throughout the specimen, the temperature is held constant at the temperature stage for one hour before cooling. Mechanical properties at ambient temperature and residual mechanical properties after heating have already been determined. We study the physico-chemical properties and the microstuctural characteristics. Thermogravimetric analysis, thermodifferential analysis, X-ray diffraction and microscopic observations with SEM are used. The aim of these studies is in particular to explain the observed residual compressive strength increase between 150 and 300°C.
Microstructure et propriétés physico-chimiques de bétons autoplaçants chauffés de 20 à 600°C
Fares, Hanaa (Autor:in) / Remond, Sébastien (Autor:in) / Noumowé, Albert (Autor:in) / Cousture, Annelise (Autor:in)
European Journal of Environmental and Civil Engineering ; 15 ; 869-888
01.01.2011
20 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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