1. American Society for Testing and Materials (ASTM). (1997). “Test method for air content for freshly mixed concrete by pressure method.” ASTM C 231 Philadelphia.
2. American Society for Testing and Materials (ASTM). (1998). “Test method for normal consistency of hydraulic cement.” ASTM C 187 Philadelphia.
3. American Society for Testing and Materials (ASTM). (1999). “Standard specification for lightweight aggregates for insulating concrete.” ASTM C332 Philadelphia.
4. American Society for Testing and Materials (ASTM). (2000a). “Specification for lightweight aggregates for structural concrete.” ASTM C330 Philadelphia.
5. American Society for Testing and Materials (ASTM). (2000b). “Standard specification for coal fly ash and raw or calcined natural pozzolan for use as a mineral admixture in concrete.” ASTM C 618 Philadelphia.