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Normal Cement

Description

Definition

It is an Ordinary Portland Cement that hardens into solid a mass when combined with water .

It is resulted from pulverizing and softening of clinker formed by burning a mixture of homogenized

limy materials and clay materials which contain Silica, Alumina, Sulfur Oxides, and adding gypsum during pulverizing.

Usage

In all building ,constructions and concrete casting.

CHEMICAL ANALYSIS

TYPE
UNIT (%)
VALUE
MAGNESIUM OXIDE - MgO
WT
<=4
SULFUR TRIOXIDE - SO3
WT
<=3
LOSS ON IGNITION - L.O.I
WT
<=4
INSOLUBLE RESIDE - I. R
WT
<=1.5
 


PHYSICAL TESTS

TEST
UNIT
VALUE
INITIAL SETTING TIME
Minute
>=45
FINAL SETTING TIME
Hour
<=10
SPECIFIC SURFACE AREA "FINENESS"
Cm2/g
>=2200
SOUNDNESS - le chatller
mm
<=10


PRESSURE RESISTANCE

DAYS
UNIT
VALUE *
VALUE **
3
MPa
>=15
>= 30
7
MPa
>=23
>= 40
28
MPa
>=35
>= 59​

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