Portland cement type 5

Portland cement type 5


Due to low aluminate phase (5% >), Portland cement type 5 has a high resistance against sulfate-ion in the soil and water environments. Concrete in accordance with the regulations of Iran (ABA), the water environment in extreme concentration of sulfate ion and sulfate more than 1,200 ppm, dusty environments, severe sulfate more than 0.5%, the weight of the soil, and therefore, in accordance with these regulations it is necessary to put all concrete structures exposed to soil and water, are made with cement type 5 and in any case for the most severe sulfate environments with more than 2500 ppm, sulfate concentrations in the water And more than 1% in soil-cement is used to make sure that the type 5.

Note: research has shown concrete cement type 5 against the environment is vulnerable and therefore have chlorine in chlorine ion is sulfate ion with the environment, the application of the cement should be done with caution and do the necessary tests before accepting. Much of resistance 3, 7, 28 days for this Portland cement cement is less than the other and therefore for structures that need to be much resistance, the application is restricted.

 

 Sulphate Resistance Cement

Type 5

Standard Requirement

Result

Physical Specification

Standard Requirement

Result

Chemical Specification

Min:2800

3300±100

Blaine(/g)

 

20.7±0.3

SiO2%

Max:0.8

0.08±0.02

Auto Clave Method %

 

4.65±0.15

Al2O3%

Min:45

140±20

Setting Time In (minute)

 

5.25±0.25

%Fe2O3

Max:360

230±20

Setting Time Fi (minute)

 

65±0.5

%CaO

Min:85

270±20

Comp.strength kg/ (3 day)

Max:5

1.78±0.18

%MgO

Min:150

430±20

Comp.strengthkg/(7day)

Max:2.3

1.45±0.15

%SO3

Min:270

540±20

Comp.strength kg/(28 day)

 

0.5±0.06

%K2O

 

1.1±0.1

Sieve 0.09 mm

 

0.15±0.05

%Na2O

 

3.13±0.01

Density g/

Max:3

0.8±0.2

%L.O.I

(LossOf Ignition)

 

Max:0.75

0.25±0.1

% I.R

(Insoluble Residue)

 

1.3±0.2

%Free CaO

 

64.37

C3S%

 

10.78

C2S%

Max:5

3.44

%C3A

 

15.98

C4AF%