Activated alumina is prepared by thermal dehydration (300-600C) of chemically pure aluminium hydroxide. The prepared materials have been characterised by residual water content, BET surface area and hydraulic activity. These aluminas are incorporated in cement free castable batch. Important properties like bulk density, apparent porosity, linear change, cold compressive strength, strength retainment after thermal shock have been studied. X-ray diffraction analysis has been performed to identify the phases formed while SEM studies have been used to get an idea about the microstructure of the castable matrix.
Origin
University Of Calcutta, India
Journal Title
Trans Ind Ceram Soc 68 1 2009 31-34
Sector
Refractories
Class
R 714