1. ACI Committee 232, Use of Fly Ash in Concrete (ACI 232.2R-18), Farmington Hills, MI, 2018.
2. A new approach for the classification of coal fly ashes based on their origin, composition, properties, and behaviour;Vassilev;Fuel.,2007
3. EN 450-1, Fly ash for concrete - Part 1: Definition, specifications and conformity criteria, European Committee for Standardization, Brussels, Belgium, 2012.
4. EN 197-1, Cement - Part 1: Composition, specifications and conformity criteria for common cements, European Committee for Standardization, Brussels, Belgium, 2011.
5. ASTM C618, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete, ASTM International, West Conshohocken, PA, 2019. https://doi.org/10.1520/C0618-19.