UNCLASSIFIED 



Security Classification 



DOCUMENT CONTROL DATA -R&D 



(Security clBsstncation ot title, body ot abstract and indexing annotation must be entered when the overmU report In claaaHled) 



1. ORIGINATING ACTIVITY (Corporate author) 



Coastal Engineering Research Center CCERC ) 

 Corps of Engineers, Department of the Army- 

 Washington, D.C. 



2<. REPORT SECURITY CLASSIFICATION 



UNCLASSIFIED 



2b. CROUP 



REPORT TITLE 



CORROSION AND PROTECTION OF STEEL PILING IN SEAWATER 



4. DESCRIPTIVE NOTES (Type ol report and Inctualve datea) 



S- AUTHOR(S) (Firat namet middle initial, laat name) 



Laverne L. Watkins 



«. REPORT DATE 



May 1969 



7«. TOTAL NO. OF PAGES 



99 



76. NO. OF REFS 



55 



a«. CONTRACT OR GRANT NO. 



b. PROJECT NO. 



9a. ORIGINATOR'S REPORT NUKTBERCSI 



Technical Memorandum No. 27 



10. DISTRIBUTION STATEMENT 



This document has heen approved for public release and sale; its distribution 

 is unlimited. 



13. ABSTRACT 



The report, based on a survey of literature, assembles much of the current knowledge 

 concerning corrosion and protection of steel piling in seawater. Causes of corrosion 

 and effects of environmental conditions are presented. Resxilts of tests on protective 

 coatings for steel are included. Corrosion rates of bare steel piles and the factors 

 involved in the use of cathodic protection and concrete Jackets are explained. 

 References sm-veyed show that flame-sprayed zinc sealed with vinyl is possibly the 

 best coating system tested. More data is needed from which to determine the most 

 economical method of protecting steel piling in seawater. 



DD 



.1473 



UNCLASSIFIED 



Security Clasaiflcalloa 



