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Technical Cement Forum / Re: Issues with a product made with White Cement
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Saddam Hu
Saddam Hu
45 minutes is very low... Even 95 is strange for me. What standard do you have???? Definitely not EN-197 1. Check what is written in, it is out the norm! You do not need any other evidences. Check the accuracy of your testing, ensure the compliance to the norm and contact producer. Good luck! 
CementUser
CementUser

Thanks... Regrets was unable to reply earliar as was not well.

agree 45 min is low but as per the specs in my country this is in acceptable range. As for testing...this test result is as per producers test report.

 

Characteristics

Specs requirement

  

1.

Chemical

      
 

a.Insoluble Residue %
b.Iron Oxide %
c.Magnesium Oxide %
d.Sulphur Trioxide %
e.Lime Saturation Factor
f. Loss of Ignition

Max. 2.0
Max. 1.0
Max. 6.0
Max. 3.5
Min. 0.66 - 1.02
-

   

2.

Physical

      
 

a. Degree of Whiteness %
    ISI Scale
    Hunters Scale
b. Fineness (Blaine) M2/KG
    (Specific Surface)
c. Setting Time (Minutes)
    1.Initial
    2.Final
d. Soundness
    1. Lechateliers Method
    2. Autoclave expansion %
e. Compressive Strength
     (Cement and Std. Sand Mortar  1:3)
    1. 3 days
    2. 7 days
    3. 28 days
f. Retention on 63 micron sieve %


Min. 70
 -
Min.225
 
 
Min.30
Max.600
 
Max. 10
Max. 0.8
 
 
Min. 14.4
Min. 19.8
Min. 29.7
Max. 2.0