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A survey of ports in five west European countries has shown that 36 (12-13 %) are affected by low water corrosion (LWC) of steel piling structures. This takes the form of severe corrosion, at or just below the mean low water mark, reducing significantly the effective life of the structure. Electrochemical corrosion monitoring has been carried out at four of the affected ports; potential measurements have been made on existing piling structures and laboratory tidal simulation tests have been undertaken. Detailed examination of corrosion products and other deposits on sheet piling walls was made. Bacteriological studies have been carried out at a number of the affected ports and, in many cases, sulphate reducing bacteria (SRB) have been found in high numbers around the LWC holes. Linear polarization resistance tests and corrosion weight loss tests have shown that bacteria from around LWC holes can cause a very significant increase in the corrosion of steel.

Additional information

Authors: JOHNSON K, British Steel, Swinden Technology Centre, Rotherham (GB);MOULIN J, Profil ARBED, Esch-sur-Alzette (LU);KARIUS R, Krupp Hoesch Stahl, Dortmund (DE);RESIAK B, Krupp Hoesch Stahl, Dortmund (DE);CONFENTE M, Unimetal, Amnéville (FR);CHAO W, Unimetal, Amnéville (FR)
Bibliographic Reference: EUR 17868 EN (1997) 119pp., FS, ECU 20.00
Availability: Available from the (2)
ISBN: ISBN 92-828-1889-6
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