A critical review on application of alkali activated slag as a sustainable composite binder

摘要

A state-of-the-art review of advances in alkali activated slag (AAS) with respect to its Received 2 May 2019 behaviour is presented. The need for sustainable development of AAS, and factors that Received in revised form 29 June 2019 affect the fresh and hardened properties of AAS based composites were discussed. The fresh Accepted 30 June 2019 properties of AAS reviewed include flow, setting times and heat of hydration. While the hardened properties considered were compressive strength, shrinkage, and microstruc- ture. Major limitation of using AAS and possible solutions were also highlighted. Overall, various studies showed that large scale application and commercialization of AAS is imminent in the coming years, as AAS is capable of exhibiting similar/higher properties.