Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental and Numerical Thermomechanical Characterization of Refractory Masonries
Tese de Doutoramento em Engenharia de Segurança aos Incêndios apresentada ao Departamento de Engenharia Civil da Faculdade de Ciências e Tecnologia da Universidade de Coimbra. ; The manufacturing process of several materials adopted in industry, in civil construction and in our daily life has processes performed at high temperatures, such as melting and heat treatments. Thus, these production processes require products that resist to high temperatures, maintaining their physical and chemical properties in service. Refractory ceramics, due to their properties, have been used for this purpose, having crucial importance in high temperature processes. Refractory linings (composed of refractory ceramics) are used in industrial vessels to produce steel, iron, cement, non-ferrous metals, glass, metallic alloys, in melting process, in petrochemical industry, in incinerators, in mineral processing, in power plants and many other applications. The service temperature of these vessels is around 1650ºC for the steel ladles and 1450 ºC for the cement kilns, however, some processes may reach 2000ºC. In spite of the economic importance of the refractory ceramics, there are few researches on the thermomechanical behaviour of such structures at large scales. Due to the elevated prices of the products and the high costs of large scale tests, the biggest part of the experimental campaigns are focused on small specimens. Nevertheless, the experimental campaigns in large scale specimens are required to calibrate and validate the numerical models developed to simulate the industrial linings. The focus of this study is to fully characterize the thermomechanical behaviour of dry stacked refractory masonry under diversified situations. Therefore, a large experimental campaign was performed covering the behaviour of the brick, the behaviour of the joints and the behaviour of the masonry panels. The refractory bricks are injected into the moulds, pressed and then fired during their production processes. Consequently, the ceramics present ...
Experimental and Numerical Thermomechanical Characterization of Refractory Masonries
Tese de Doutoramento em Engenharia de Segurança aos Incêndios apresentada ao Departamento de Engenharia Civil da Faculdade de Ciências e Tecnologia da Universidade de Coimbra. ; The manufacturing process of several materials adopted in industry, in civil construction and in our daily life has processes performed at high temperatures, such as melting and heat treatments. Thus, these production processes require products that resist to high temperatures, maintaining their physical and chemical properties in service. Refractory ceramics, due to their properties, have been used for this purpose, having crucial importance in high temperature processes. Refractory linings (composed of refractory ceramics) are used in industrial vessels to produce steel, iron, cement, non-ferrous metals, glass, metallic alloys, in melting process, in petrochemical industry, in incinerators, in mineral processing, in power plants and many other applications. The service temperature of these vessels is around 1650ºC for the steel ladles and 1450 ºC for the cement kilns, however, some processes may reach 2000ºC. In spite of the economic importance of the refractory ceramics, there are few researches on the thermomechanical behaviour of such structures at large scales. Due to the elevated prices of the products and the high costs of large scale tests, the biggest part of the experimental campaigns are focused on small specimens. Nevertheless, the experimental campaigns in large scale specimens are required to calibrate and validate the numerical models developed to simulate the industrial linings. The focus of this study is to fully characterize the thermomechanical behaviour of dry stacked refractory masonry under diversified situations. Therefore, a large experimental campaign was performed covering the behaviour of the brick, the behaviour of the joints and the behaviour of the masonry panels. The refractory bricks are injected into the moulds, pressed and then fired during their production processes. Consequently, the ceramics present ...
Experimental and Numerical Thermomechanical Characterization of Refractory Masonries
04.04.2022
101678720
Hochschulschrift
Elektronische Ressource
Englisch
DDC:
624
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