Cement (32.5)

Product Description

The"jianfeng"cement product serise is produced according to advanced national and industry standards. It won the award of"national inspection-free product", "national building materials bureau quality products", "brand-name products in zhejiang"and it passed iso9002 certification.

Specifications:

Grey portland cement for construction grade 42.5 according to british and en 197-1/2000 or astm c 150

Chemical composition

Silicon dioxide (sio2) 20.08 - 21.50

Aluminium oxide (a12o3) 5.30

Ferric oxide (fe2o3) 3.25 3.50

Calcium oxide (cao) 65.60

Magnesium oxide (mgo) 1.70 3.00

Sulphur trioxide (so3) 2.70 3.00

Loss of ignition (loi) 1.80 3.00

Insoluble residue % 0.1 0.7

Tricalcium silicate (c3s) 50.00 54.40

Dicalcium silicate (c2s) 14.2 18.20

Tricalcium aluminate (c3a) 6.00 6.80

Tricalcium alumino ferrice (c4af) 11.60

Chromium (cr%) 2.0 max

Physical and mechanical properties

Blain cm2/gr 3.250

Autoclave expantion 0.02

Normal consistency % 27.5

Initial setting time (vicat)(hours-mins) 3.25-4.50

Hard set (hours-mins) 4.54 6.00

Fitness index (cm2/gm) 2800-3040

Compressive strength iso/en 197-1/2000 bs 4550 mortar

@ 03 days 2.65 34.2 kg/cm2

@ 07 days 37.3 42.5 kg/cm2

@ 28 days 52.8 54.6 kg/cm2

British standard clinker

Examine item guaranteed

Cao 64%min

Sio2 20.0-23.0%

Al2o3 4.0-5.5%

Fe2o3 2.0-3.5%

Mgo 3.3-4.5%

So3 1.0%max

Loss of ignition 1.5%max

F-cao 1.5%max

Insoluble residue 0.75%max

(na2o+0.65k2o) 0.60%max

C3s 50-65%

Packing: 50 kg in polypropylene bags then enclosed in jumbo pack ( 1.5mt or 2.00 mt ). Or bulk.

Shipping:

1) shipment: To be effected within 30/45 days after receipt of the L/C

2) payment: T/T or by 100% irrevocable L/C at sight

3) terms: Fob, cif, cpt

4) insurance: Under cif, for 110% invoice value against all risk as per cic

Dated 1/1/1981

5) loading port: Ningbo or shanghai, china