Unclassified 
SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 
READ I RUCTIONS 
REPORT DOCUNENTATION PAGE 
1. REPORT NUMBER 2. GOVT ACCESSION NO. 3. RECIPIENT'S CATALOG NUMBER 
4. TITLE (and Subtitle) 5. TYPE OF REPORT & PERIOD COVERED 
Final; Jul 77 — Sep 79 
6. PERFORMING ORG. REPORT NUMBER 
- ANTIFOULING MARINE CONCRETE 
Th 8. CONTRACT OR GRANT NUMBER(s) 
AUTHOR(s) 
C. W. Mathews 
10. PROGRAM ELEMENT, PROJECT, TASK 
AREA & WORK UNIT NUMBERS 
EG-77-A-29-1104 
12. REPORT DATE 
13. NUMBER OF PAGES 
1S. SECURITY CLASS. (of this report) 
9. PERFORMING ORGANIZATION NAME AND ADDRESS 
CIVIL ENGINEERING LABORATORY 
Naval Construction Battalion Center 
Port Hueneme, California 93043 
11. CONTROLLING OFFICE NAME AND ADDRESS 
Department of Energy 
Unclassified 
DECL ASSIFICATION/ DOWNGRADING 
SCHEDULE 
15a. 
16. DISTRIBUTION STATEMENT (of this Report) 
Approved for public release; distribution unlimited. 
17. DISTRIBUTION STATEMENT (of the abstract entered in Block 20, if different from Report) 
18. SUPPLEMENTARY NOTES 
KEY WORDS (Continue on reverse side if necessary and identify by block number) 
19. 
Antifouling concrete, OTEC, concrete, fouling, antifouling, fouling organisms, toxic 
agents, antifouling coatings. 
20. ABSTRACT (Continue on reverse side If necessary and identify by block number) 
Various toxic agents were investigated for their ability to prevent the attachment and 
growth of marine fouling organisms on concrete. Three methods of incorporating anti- 
foulants into concrete were also studied. Porous aggregate was impregnated with creosote 
and bis-(tri-n-butyltin) oxide (TBTO) and then used in making the concrete. Cuprous oxide, 
triphenyltin hydroxide (TPTH), and 2-2-bis-(p-methoxypheny])-1,1,1-trichloroethane 
(methoxychlor) were used as dry additives. Two proprietary formulations were applied as 
FORM wi 
DD , jan 73 1473. EDITION OF 1 Nov 6515 OBSOLETE Unclassified 
SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 
UN AU A 
0 0301 O040ee25 1 
