A large amount of FBA is generated as a by-product of coal fired power generation every day, and finding recycling outlets for FBA would contribute to the sustainable use of resources (Kou et al.,2012). Previous studies showed that FBA can be used as a lightweight material to replace natural aggregates for concrete production.
Kou and Poon (2009) showed that for the concrete mix prepared with 100% FBA replacing natural fine aggregate, a compressive strength of 32 MPa was achieved after 28 d curing at a W/C ratio of 0.53.