Based on Properties of Concrete, Using Waste Medical Glass Powder as Fine Aggregate – Some Initial Results

Due to lack of effective recycled method, waste glass collected from medical bottles may cause pollution of water, air and soil. By possessing a high performance of mechanical and chemical properties, this type of glass can be used as a partial replacement for coarse aggregate, fine aggregate or cement in manufacture of concrete toward a sustainable construction industry. In powder form, glass possesses pozzolan characteristics and can be used as a partial replacement of cement role in concrete. In this study, medical glass is crushed into powder, with a fineness of less than 10% through a sieve of 90 micrometers. In order to reduce amount of cement, glass powder is introduced with content of 5%, 10%, 15% and 20% by weight of cement respectively. The aim is to study the effect of this substitution on the development of compressive strength of concrete compared to nominal concrete. The results show that with replacement of 10%, the strength of concrete is the best and can be practically applied