1. ASTM C618-99 Standard specification for coal flyash and raw or calcined natural pozzolan for use as a mineral admixture in concrete
2. ASTM D695-96 Standard test method for compressive properties of rigid plastics
3. Gupta N, Karthikeyan C S, Sankaran S and Kishore 1999Mater. Char. 14 271
4. Katz H S and Milewski J V (eds) 1987Handbook of fillers for plastics (Reinhold: Von Nostrand)
5. Helmuth Richard 1987Flyash in cement and concrete (Illinois: Portland Cement Association) p. 36