1. EIA, Annual Energy Review 2011, DOE/EIA-0384 (2011), Energy Information Administration, Washington, DC. Available from: http://eia.gov/aer, September 2012.
2. ACAA, American Coal Ash Association 2013, Applications, Science, and Sustainability of Coal Ash 2013. Availability from: http://www.acaa-usa.org, 2013.
3. EIA, International energy data and analysis of Malaysia, Energy Information Administration, Washington, DC Available from: www.eia.gov/beta/international/analysis_includes/countries_long/Malaysia, 2014.
4. ASTM, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete. 2012. C618.
5. Mechanical properties and compositional heterogeneities of fresh geopolymer pastes;Favier;Cement and Concrete Research.,2013