Portland cement type 2

Portland cement type2 


According to the national iran standard to the number 389 ISIRI produced. Portland cement type 2 for making concrete that was essential in the medium Hydra-heat them and attack is moderate to sulfates, can be used. Due to the limitations of being a three-phase calcium aluminate and silicate phase is less than this, and that caused the aforementioned special properties, the initial and final pressure resistance mortar Portland cement type standard it is less than 1. The cement in the concrete structures of the kidney is usable and in soil and water environments where ions concentration of sulfate in the medium (according to the regulations of Iran's concrete "Abba", blue for intermediate environmental conditions in the concentration of sulfate ions is less than ۱۲۰۰ppmو in dusty environment is less than 5/. % Is), is used. For concrete placement in the relatively warm air that typical concrete temperature increase risk to more than 32 degrees Celsius and heavy concrete over 15 ° c there is widespread application of the cement.

Note: for use in environments containing chlorine and sulfate ions simultaneously and in high concentrations of sulfate-ion-containing environments as well as concreting in cold weather the consumption of cement is not recommended.

Physical and chemical properties of cement type 2

 

Ordinary Portland Cement

Type 2

Standard Requirement

Result

Physical Specification

Standard Requirement

Result

Chemical Specification

Min:2800

3200±100

Blaine (/g)

Min:20

20.7±0.3

SiO2%

Max:0.8

0.08±0.02

Auto Clave Method %

Max:6

5.2±0.2

Al2O3%

Min:45

140±20

Setting Time In (minute)

Max:6

4.6±0.2

%Fe2O3

Max:360

240±20

Setting Time Fi (minute)

 

65±0.5

%CaO

Min:100

270±20

Comp.strength kg/ (3day)

Max:5

1.8±0.2

%MgO

Min:175

440±20

Comp.strengthkg/(7day)

Max:3

2.2±0.4

%SO3

Min:315

530±20

Comp.strength kg/(28 day)

 

0.5±0.05

%K2O

 

1.1±0.1

Sieve 0.09 mm

 

0.15±0.05

%Na2O

 

3.12±0.01

Density g/

Max:3

1±0.5

%L.O.I

(LossOf Ignition)

 

Max:0.75

0.4±0.1

% I.R

(Insoluble Residue)

 

1.3±0.2

%Free CaO

 

59.47

C3S%

 

14.48

C2S%

Max:8.00

6.00

%C3A

 

14.00

C4AF%