Performance of slag-fly ash based alkali activated concrete for paver applications utilizing powdered waste glass as a binding ingredient

Abstract

In the present scenario, there is a huge requirement of quality concrete for paver applications. The production of green and sustainable concrete has become a must to substitute the ordinary Portland cement (OPC) concrete. It is an eminent fact that the manufacture of OPC requires the burning of its raw materials which lead to a huge amount of carbon dioxide liberation; also, it requires a large amount of energy dissipation. The concrete produced using alkali activation has become renowned methods to replace the conventional OPC, which gives an answer to find a way to generate environmentally friendly concrete. In the current study, pavement quality concrete (PQC) is produced using alkali activation. The main focus of the work is to study the effect of powdered glass as a binding ingredient in Alkali-Activated Concrete (AAC) mixes. The alkaline activator used to activate the binder was sodium hydroxide solution dispersed in liquid sodium silicate. The utilization of industrial dissipate materials such as Ground Granulated Blast Furnace Slag (GGBS), fly ash, and waste glass powder was used as the binding ingredients, and stone crusher dust was used as fine aggregates. The experimental investigation showed that a PQC can be easily produced using alkali activation of industrial wastes satisfying its strength requirements. It was behaving better under fatigue, showing its relevance in usage as a pavement construction material.