Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermal Expansion Study and Microstructural Characterization of High-Performance Concretes
Ultra-high performance concrete (UHPC) is a family of emerging materials for building and construction applications. Behavior of UHPCs at high temperature is very important to their reliability and safety. In the current study, two UHPC materials were studied using the thermomechanical analysis (TMA) technique between room temperature and 800°C. Both reversible and irreversible phase transformations were observed from the TMA results, which were likely attributable to the quartz transformation and the dehydroxylation transitions, respectively. Thermal expansion coefficients exhibited significant variations in different temperature regimes. Postmortem scanning electron microscopy (SEM) examinations revealed extensive cracking in the heated samples. In addition, microporosities were observed in the calcium-silicate-hydrate (C-S-H) phase as a result of phase changes during heating.
Thermal Expansion Study and Microstructural Characterization of High-Performance Concretes
Ultra-high performance concrete (UHPC) is a family of emerging materials for building and construction applications. Behavior of UHPCs at high temperature is very important to their reliability and safety. In the current study, two UHPC materials were studied using the thermomechanical analysis (TMA) technique between room temperature and 800°C. Both reversible and irreversible phase transformations were observed from the TMA results, which were likely attributable to the quartz transformation and the dehydroxylation transitions, respectively. Thermal expansion coefficients exhibited significant variations in different temperature regimes. Postmortem scanning electron microscopy (SEM) examinations revealed extensive cracking in the heated samples. In addition, microporosities were observed in the calcium-silicate-hydrate (C-S-H) phase as a result of phase changes during heating.
Thermal Expansion Study and Microstructural Characterization of High-Performance Concretes
Ren, Fei (Autor:in) / Wang, John Jy-An (Autor:in) / DiPaolo, Beverly P. (Autor:in)
Journal of Materials in Civil Engineering ; 25 ; 1574-1578
22.09.2012
52013-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Thermal Expansion Study and Microstructural Characterization of High-Performance Concretes
| Online Contents | 2013
Thermal Expansion Study and Microstructural Characterization of High-Performance Concretes
| British Library Online Contents | 2013
Thermal Expansion Study and Microstructural Characterization of High-Performance Concretes
| Online Contents | 2013
| Taylor & Francis Verlag | 2020
Initial thermal expansion characteristics of insulating refractory concretes
| DOAJ | 1957