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MECHANICAL ACTIVATION OF SLAG AND ITS INFLUENCE ON MECHANICAL PROPERTIES OF GEOPOLYMERS
Abstract
Slag is one of the by-products of energy industry which is suitable for secondary industrial processing. Although slag has been successfully used in industrial production for several decades its use does not achieve the level of its potential. This work describes the improvement of mechanical properties of alkali activated binders пїЅ geopolymers made of slag. The effect of mechanical activation on mechanical properties of geopolymers was examined. Mechanical activation was made with ball mill and different time of milling. Synthesis of geopolymers was carried out in drier at 80пїЅC. Samples were made before mechanical activation and after. The differences in strengths of samples were examined. Mechanical properties such as compressive strength and flexural strength that was measured was the most significant attribute. Samples were tested after 7, 28 and 90 days. Results shows that the mechanical activation is an important factor in synthesis of slag based geopolymers, which has better properties after mechanical activation.
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