CONTENTS 
INTRODUCTION 
ANTIFOULING MATERIALS 
Treated Aggregate ‘ 
Dry Toxicants in Cement Mix 
Antifouling Coatings 
TESTING PROCEDURES 
Preparation of Concrete Specimens 
Ocean Exposure 
Corrosion of Simulated Renn comesne Rod 5 
Biotoxicity Tests 
FINDINGS 
Antifouling Properties 
Compressive Strength . 
Corrosion of Simulated Rowneoncme Rod : 
Biotoxicity 
DISCUSSION 
Cost of Materials 
Ocean Site Effects 
Objective Ratings 
Persistance of Organotins 
SUMMARY OF RESULTS 
Antifouling Properties 
Toxicant Effects 
Costs 
CONCLUSIONS . 
RECOMMENDATIONS 
ACKNOWLEDGMENTS 
REFERENCES 
