Dr. Chengulaa, Duwa HamisiProf. Msambichaka, Joseph JProf. Middendorf, Bernhard2025-08-072025-08-0720182307-4531https://repository.must.ac.tz/handle/123456789/425This Journal Articles was Published by International Journal of Sciences: Basic and Applied Research (IJSBAR)The use of cementitious materials for construction of buildings and structures started during ancient civilization. Science of modifying physical and chemical properties of cementitious materials is a continual process which is because of a need to increase reactivity and improve strength and durability properties of binders. Due to increasing demand of modern infrastructures and continual depleting of binder sources the scientist, engineers and researchers work hard on improving binding properties of cementitious materials for construction of low cost and durable structures. Among of the factors which affect binding properties of cementitious properties are densities, surface areas and particle size distribution. Several methods and procedures have been developed to determine these physical properties on which other require huge capital investment and others takes long time to complete a test which hinders further investigation and improvement of alternative binders. This study investigated that there exists an ‘S’ curve similar to particle size distribution curve when time air flow against weights of sample measured using Blaine apparatus is drawn.enArticle