Fly ash artificial aggregate

Abstract

Artificial aggregate with fly ash based geopolymer was evaluated as an aggregate that suitable used in concrete and lightweight concrete. This aggregate was produced by mixing the fly ash with alkaline activator which classified as geopolymer. The fly ash artificial geopolymer aggregate can be formed by curing process at 70˚С for 24 hours. This artificial geopolymer aggregate have high strength, less water absorption and porosity with acceptable density which are comparable to the existence of aggregate in market. This aggregate can help to reduce global warming due to its geopolymerization process. Furthermore, the production of this fly ash artificial geopolymer aggregate is using low temperature processing.