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               Cement Testing Report
NO. 400903021
          
          
Name     
Common Portland Cement     
Strength Grade 42.5
           D3-2      2009-3-9
                2009-4-9
      
Admixture 12%     
Gypsum 5%
                    (Testing Result)
                
(Item)   
(Unit)     
(National Standard)       
(Testing Result)
   (Cl) % ?0.06 0.016
  
(Burning Loss) % ?5.0 3.22
    (Magnesia) % ?5.0 1.55
     (SO3) % ?3.5 2.10
     (Specific Surface Area) m2/ ?300 350
     (First Curdling Time) h:min ?0:45 2:15
     (Final Curdling Time) h:min ?10:00 3:10
    (Stability)     
Must be accorded   
Accorded
  
  
Strength
(3 Days)     
Folding Strength
MPa
?3.5 5.5
5.60 5.55 5.50
    
Compressive
Strength
MPa
?17.0 25.0
25.2 25.0 24.8
24.6 25.2 25.0
  
  
Strength
(28 Days)     
Folding Strength
MPa
?6.5 8.7
8.75 8.60 8.70
    
Compressive
Strength
MPa

?42.5 50.1
50.1 50.3 50.2
49.8 50.1 49.9


                  
       GB175-2007
      XK23-201-07191
              
                                                                
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