Description
Cement:：ORDINARY PORTLAND CEMENT P.O*2.5Â
GRADE
SPECIFICATIONSÂ :STANDARD PARAMETERS OF CEMENT PO *2.5 WITH
GB*******7
CATEGORY GB*******7Â Â Â QUALITYÂ
INDEXÂ GRADE:PO*2.5
SOUNDNESS (MM)Â QUALIFIED
(SO3)(%) ≤3.5
(MGO)(%) ≤5.0
ALKALI ( NA2O*0.**8K2O)(≤0.6%)* ***-
CHLORIDE CONTENT (%) * ≤0.*6
DEGREE OF FINENESSÂ Â (*0UM)(%)Â ***-
FINENESS (SPECIFIC SURFACE) (M2/KG ) ≥**0
LOSS ON IGNITION (%) ≤5.0
INSOLUBLE RESIDUE (%)Â ***-
SETTING TIME (H : M)
 INITIAL TIME  ≥0:*5
 FINAL TIME  ≤*0:0
FLEXURAL STRENGTH (MPA)
 3 DAYS ≥3.5
 *8 DAYS ≥6.5
COMPRESSIVE STRENGTH (MPA)
 3 DAYS ≥*7
 *8 DAYS ≥*2.5
*（SELECTIVE INDEX）
standard ：THE SPECIFICATION OF QUALITY CONFORMING TO GB
*******7 STANDARD, CHINA
