TABLE 12 - ANTIFOULING CONCRETE MATERIALS COSTS 



Material 



Approximate Average Cost 

 (1977) ($) 



Marine Concrete, yd-^ 

 Aggregates - Rock & Sand, ton 

 Marine Creosote, lb 

 Tributyltin Oxide, lb 

 Antifouling Polymer Solution, lb 

 Antifouling Monomer Solution, lb 



21.00,* 33.00,** 40.00*** 

 2.10, + 8.50 tt 



o.so"^'''"^ 



4.65# 

 S.OOi'^^/ 

 4 . 50^^ 



^Standard Marine Concrete, 3000 psi compressive strength, 

 delivered on-site, Maule Industries, Inc., Miami, Florida. 



**Standard Marine Concrete, lightweight concrete, delivered 

 on-site, Maule Industries, Inc., Miami, Florida. 



***Standard Marine Concrete, 3000 psi compressive strength, plant 

 cost, HV&D, Honolulu, Hawaii. 



t Maule Industries, Inc., Miami, Florida, cost from quarry less 

 transportation. 



tt HV&D Company, Inc., Honolulu, Hawaii, cost from quarry 

 including transportation. 



ttt Koppers Company, Inc., Monroeville, Pennsylvania. 

 #M&T Chemicals, Rahway, New Jersey. 

 #//45% solids solution, M&T Chemicals , Rahway, New Jersey. 



concrete and aggregate vary, they are responsible for only a small fraction 

 of the cost of each proposed system. A brief discussion of these factors 



for each previously mentioned system follows. 



1 ? 

 Data supplied by Muroaka and Vind on the impregnated porous shale 



aggregates indicate that a 25-percent solution of TBTO in marine creosote 

 was most effective in the controlling of fouling at all depths. It is 

 assumed that the porous shale will first absorb 25 to 30 percent by weight 

 of the creosote-TBTO mixture and that the resultant antifouling concrete 

 mixture will be applied as a 3-in. -thick shell over the conventional struc- 

 tural concrete form of the power plant. Table 13 gives cost breakdowns for 

 this system according to geographic location. 



The costs are similar regardless of geographic location. However, 

 development of application techniques for covering large surfaces with these 

 concrete shells could conceivably further increase these figures. 



50 



