Proper

Abstract

In order to solve environmental and economical weakness of existing lightweight wall system, this study conducted a basic experiment to produce lightweight wall based on blast furnace slag and paper ash, which are industrial by-products, without using cement, and to check density and strength properties according to alkali activator mixing ratio of noncement composite from the blast furnace slag and the paper ash. According to the outcome of an experiment to select optimal mixing ratio of alkali activator, density and water absorption ratio revealed semi-proportional correlation, and test specimen added with Na2SiO3 showed higher density and lower water absorption ratio than there placed NaOH. Meantime, as strength, density and water absorption ratio showed the direct opposite, which means that strength of composite added with Na2SiO3 was generally weaker than that of replaced composite.