Light Weight ▫ Manufactured or Natural Bulk Density Less than 1120 kg m3 70 pcf Most commonly used in lightweight concrete many must be screened A Density I Apparent specific gravity Density of the material including the internal pores II Bulk density dryrodded unit weight weight of aggregate that would fill Light Weight ▫ Manufactured or Natural Bulk Density Less than 1120 kg m3 70 pcf Most commonly used in lightweight concrete many must be screened A Density I Apparent specific gravity Density of the material including the internal pores II Bulk density dryrodded unit weight weight of aggregate that would fill