1. ASTM C6118 (2023). Standard Specification for Coal and Raw or Cacined Natural Pozzolana for Use in Concrete. American Society of Testing Materials, USA.
2. ASTM C593. (1995). Specification for Lime - pozzolana Cement. American Society of Testing Materials, USA.
3. ASTM C1707 (2018). Standard Specification for Pozzolanic Hydraulic Lime for Structural Puposes. American Society of Testing Materials, USA.
4. British Standard (2019). Testing Hardnend and Concrete. Compressive Strength of Test Specimens. BS EN 1239-3.
5. British standard (1992). Specification of Aggrigates from Natural Sourse for Concrete. BS 882. No. 1