1. Recommended practice for selecting proportions for structural lightweight concrete (ACI 211.2-69);A.C. ACI Standard,1969
2. Standard specification for silica fume used in cementitious mixtures;ASTM-C1240,2003
3. Standard test method for density, relative density (specific gravity), and absorption of coarse aggregate;ASTM-C127,2003
4. Standard test method for density, relative density (specific gravity), and absorption of fine aggregate;ASTM-C128,2001
5. Standard specification for portland cement;ASTM-C150,2004