Anisotropy analysis of low cement concrete by ultrasonic measurements and image analysis

• Published in: Science of sintering Vol. 48; no. 1; pp. 57 - 70
• Main Authors: Martinovic, Sanja, Vlahovic, Milica, Majstorovic, Jelena, Volkov-Husovic, Tatjana
• Format: Journal Article
• Language: English
• Published: Beograd International Institute for the Science of Sintering (IISS) 01-01-2016; International Institute for the Science of Sintering, Beograd
• Subjects: Aluminum oxide; Anisotropy; Castability; Cements; Image analysis; low cement concrete; refractories; Sintering; Thermal shock; ultrasonic measurements; Ultrasonic testing
• ISSN: 0350-820X; 1820-7413
• DOI: 10.2298/SOS1601057M

The analized material was high alumina low cement castable sintered at three
different temperatures. Influence of initial material anisotropy on the
thermal shock resistance as well as changes of anisotropy level during the
thermal shock were studied. Water quench test was used as an experimental
method for the thermal stability testing. Surface anisotropy was analysed by
image analysis and structural anisotropy using ultrasonic measurements. The
results pointed out that the highest homogeinity and the lowest surface and
structural anisotropy was for the samples sintered at 1600?C. Surface
anistoropy had prevailing infuence on behavior of material during the thermal
shock, but the structural anisotropy should not be neglected.