Table C-1. Control Cylinder Data for Sphere 3 



Hemisphere 



Curing 

 Condition 



Total 



Age 



(days) 



Saturated 

 With Seawater 

 Prior to Test 



Number of 



Control 

 Specimens 



Compressive 



Strength, f^ 



(psi) 



Coefficient 



of 



Variation 



(%) 





Fog Room 



28 



no 



3 



8,520 



- 





Field" 



28 



no 



3 



7,260 



- 





With 













W-15 



Hemisphere"^ 



134 



no 



3 



8,840 



- 





Fog Room 



514 



no 



3 



10,470 



3.9 





Field at 

 CEL"' ^ 



514 



no 



4 



8,650 



3.7 





Fog Room 



28 



no 



3 



8,400 



- 





Field" 



28 



no 



3 



7,940 



- 



W-16 



With 

 Hemisphere" 



132 



no 



3 



9,650 



- 





Fog Room 



512 



no 



3 



10,360 



1.5 





In ocean"' '^ 















(at 4,400 ft 



512 



yes 



4 



7,600 



4.0 





for 341 days) 













" First 28 days: moist-cured in wet burlap wrapped in plastic sheeting. 

 *" 6 X 12-in.-long cylinders cored from block 18x18x14 inches. 



29 



