PFA 



Regular lightweight 



air-dry 



ill 



114.9 114.7 



y/A 



m-air 

 weight 



in-seawater 

 weight 



30% RH for 

 17 days after 

 29-day fog cure 



Freshly mixed 

 concrete, with 

 aggregate saturated 



Saturated concrete, 

 14 days at 500 psi 

 after 28-day fog cure 



Figure 12. Comparison of unit weights for Mix no. 3 concretes. 





1— 























V//A PHA 







1 1 Regular lightweight 









110.6 





112.7 111.3 





115.5 



117.0 



in-air 

 weight 







105.5 



1 







zm/ 









100 



air-dry 



92 







- 





i 











51.5 



', 53. 0^; 



in-seawater 

 weight 



50 





Wa 









y/m 













v/zo^/ 











9 













9/ 













m 







y////A 







m 





30% RH for 

 17 days after 

 28-day fog cure 



Freshly mixed 

 concrete, with 

 aggregate saturated 



Saturated concrete, 

 17 days at 500 psi 

 after 28-day fog cure 



Figure 13. Comparison of unit weights for Mix no. 4 concretes. 



22 



