Results of the “High Strength” Mix in the Previously Mentioned Study

 Quantities  Mix S-4 
Cement (pcy)     536
 Ground Blast Furnance Slag (pcy)     342
 Water (pcy)     323 
 3/4" (19 mm) Expanded Slate LWA (pcy)     940
 Unit Weight Plastic   1948 kg/m3   121.6 pcf
 Unit Weight Dry   1865 kg/m3   116.4 pcf
 Slump   171.5 mm   6-3/4 in
 Air     1.50%
 Compressive Strength:    
      7 days   36.8 Mpa   5340 psi
      28 days   49.5 Mpa   7180 psi
      365 days   57.2 Mpa   8290 psi
 Splitting Tensile Strength:    
      7 days   2.6 Mpa   370 psi
      28 days   3.4 Mpa   495 psi
      365 days   3.6 Mpa   520 psi
 Elastic Modulus:    
      7 days   23.3 Gpa   3.38 x 106 psi
      28 days   24.7 Gpa   3.58 x 106 psi
      365 days   26.5 Gpa   3.84 x 106 psi
 Creep Data:    
      Specific Creep      0.29
      Creep Coefficient      1.2
 Shrinkage Data (at 365 days):    
      Microstrain      310

 

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