Table E-1. Concrete Samples for Microstructure Examination 



Sample 

 No. 



Sample Description 



Curing 

 History 



A 



Piece of uncoated wall from hemisphere 



5.3 yr at 2,790 ft 





W-32, which was part of Sphere no. 12. 



in the ocean 



B 



Piece of concrete block that was attached 



5.3 yr at 2,790 ft 





to Sphere no. 12. Concrete was from same 



in the ocean 





batch as that of hemisphere W-32. 





C 



Piece of control cylinder that corresponded 



Fog curing, 100% 





to hemisphere W-32. 



RH,73°Ffor 5.6yr 



D 



Piece of concrete block that remained 



Field-cured on land, 





exposed to on-land field conditions. Concrete 



150 ft from ocean 





was from same batch as that of hemisphere 



for 5.6 yr 





W-29 (other hemisphere to Sphere no. 12). 





E 



Piece of coated wall from hemisphere 



5.3 yr at 2,635 ft 





W-26, which was part of Sphere no. 13. 



in the ocean 



48 



