The fire behaviour of masonry elements has promoted a great deal of interest in building construction. Non-loadbearing masonry walls for instance, have a considerable capacity, from the fire perspective, to isolate part of the building's interior from flames, heat and the effect of smoke. This research focuses on quantifying the fire resistance of non-loadbearing masonry walls subjected to elevated temperatures. Masonry walls constructed with different joint profiles, material properties as well as geometries have been considered. The fire resistance of the walls under each category has been analyzed using a finite element model and compared with full-scale experimental fire resistance tests, which has been conducted in an earlier project by another author. vi 2.14 Methods of Improving the Fire Resistance of Concrete Masonry-Insulating Materials 74 2.14.1 Categorization of insulating materials based on their chemical composition ..........