DISPONIAMO DI CEMENTO DEI SEGUENTI TIPI

GREY PORTLAND CEMENT FOR CONSTRUCTION GRADE 42.5N

ACCORDING TO BRITISH STANDARDS 12/1997 OR ASTM C-150

CHEMICAL COMPOSITION

SILICON DIOXIDE (SIO2) 21.00

ALUMINIUM OXIDE (A12O3) 5.50

FERRIC OXIDE (FE2O3) 3.30

CALCIUM OXIDE (CAO) 65.60

MAGNESIUM OXIDE (MGO) 1.40

SULPHUR TRIOXIDE (SO3) 2.70

LOSS OF IGNITION (LOI) 1.40

TRICALCIUM SILICATE (C3S) 60.00

DICALCIUM SILICATE (C2S) 15.00

TRICALCIUM ALUMINATE (C3A) 8.05

TRICALCIUM ALUMINO FERRICE (C4AF) 9.76

PHYSICAL AND MECHANICAL PROPERTIES TYPE V

BLAIN CM2/GR 3.250

AUTOCLAVE EXPANTION 0.02

INITIAL SETTING TIME (VICAT) 105 MINUTES

FINAL SETTING TIME (VICAT) 135 MINUTES

COMPRESSIVE STRENGTH

@ 03 DAYS 230 KG/CM2

@ 07 DAYS 305 KG/CM2

@ 28 DAYS 420 KG/CM2

specifications portland cement grade 42.5 r

examine item unit examine data gb 175.

SO3                                                        2.4 – 3.5

mgo                                                       3.5 – 5.0

FINENSS 80 MM                                       1.4 – 10

Loss On Ignition                                  3.0 – 5.0

MIX – MATERIAL SLAG                             9.5 – 10 MAX.

SOUNDNESS PASS

SETTING TIME INITIAL SET MIN                12.00.45 MIN

FOLDING STRENGTH 3 DAYS MPA               5.54     MIN

28 DAYS MPA                                             8.6 – 6.5MIN

COMPREHENSIVE STRENGTH 3 DAYS MPA   28.2 – 21

MIN28 DAYS MPA                                      50.2 – 42.5 MIN

specifications portland cement grade 52,5 R 53

examine item unit.

SO3                                                            4,0 MAX

FINENSS 80 MM                                       1.4 – 10

Loss On                                                     5.0

MIX – MATERIAL SLAG                                 10 MAX.

SETTING TIME INITIAL SET MIN                .45 MIN

FOLDING STRENGTH 2 DAYS                    30 N/mm2

MIN28 DAYS MPA                                      52.2 -53

GREY PORTLAND CEMENT FOR CONSTRUCTION GRADE P450

CHEMICAL REQUIREMENTS

Silicon Dioxide 20.5%

Aluminum Oxide 5.4%

Ferric Oxide 3.8%

Magnesium Oxide 1.4% Max 6.0%

Sulphur Trioxide 2.9% Max 3.5%

Loss on Ignition 1.4% Max 3.0%

Insoluble Residue 0.4% Max 0.7%

Tri-calcium Silicate 56

Tri-calcium Aluminates 8

Total Alkalis 0.30 Max 0.60

PHYSICAL REQUIREMENTS
Fitness: Specific surface air permeability test @ Kg /Sam 332 Min 280
Soundness: Autoclave expansion 0.00 Max 0.80
Setting time, Vical Test Initial set 45 Max 95
Final Test 200 Max 375
AIR CONTENT OF MORTAR VOLUME False set 5% Max 12%
COMPREHENSIVE STRENGTH MORTAR CUBES: PS(mp A)(K sc)
3 days Min 1740 (12,0)(122.3) Actual 3270 (22.5)(229.0)
7 days Min 2760 (19,0)(194,1) Actual 4772 (32,9)(335,5)
28 days Min 4060 (28,0)(285,5) Actual 6656 (45,9)(468,0)

CLINKER ASTM C 150- GRIS. P.350

SPECIFICATION

Item slated: Unit CEM 35.5 R

Expansion ( Le Chatelier ) : Mn 0.8

Fineness , air permeability : Cm2 / g 2940

Setting time:

- Beginning min 140

- End min 180

- Added water % 24.8

Compressive strength / 2 days : N/mm2 20.0

Compressive strength / 28 days : N/mm2 54.9

Loss on ignition % 2.27

Chloride content % 0.012

Insoluble residue % 0.36

Sulfur (as S03) % 2.09

Na20 % 0.14

K2O % 0.39

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