Density and Strength Properties according to Alkali Activator Mixing Ratio of Non-cement Composite
Keywords:
Blast Furnace slag, Paper ash, Alkali activatorAbstract
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 non-cement 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 the replaced specimen. Meantime, as flexural strength and compressive 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.
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