Effect of glass sludgh on mechanical properties of concrete

Abstract

Concrete manufacturing industry is harmful to the environment and because of this reason researchers constantly are searching how to make this industry more friendly to our nature. One of the ways to achieve this goal is to use less cement, by replacing it by pozzolanic materials or wastes. In this study, glass sludge, which is obtained which is obtained during glass processing and is collected with the help of special equipment from the water that is used during processing, was investigated. For fresh concrete mix specimens degree of compactness and air content was determined. By experiments it was determined that glass sludge increases air content in fresh concrete mix and reduces slump. For hardened concrete density, compressive and flexural strength and water absorption was determined. Research results shows that glass sludge improve mechanical properties of concrete. Best results were obtained by replacing 20 % of cement, because replacing bigger amount concrete mix properties deteriorate.