Corrosion and protection of steel piles in a natural seawater environment

Escalante, E; Iverson, W P; Gerhold, W F; Sanderson, B T; Alumbaugh, R. L.

doi:10.6028/nbs.mono.158

Cited by 9 publications

(6 citation statements)

References 1 publication

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“…The second set of data in Table 1 is for immersion corrosion losses reported for sheet piling at 8 different US Navy bases obtained from coupons cut from the piles after many years continuous exposure [20]. Data are included also for some other US sites at which experimental exposure tests were conducted over 5-year exposure periods on H and other steel piles [21]. For each of these sites the annual average DIN concentrations were estimated from US EPA and other records [2].…”

Section: Datamentioning

confidence: 99%

Long-term immersion corrosion of steels in seawaters with elevated nutrient concentration

Melchers

2014

Corrosion Science

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Data from a variety of field exposure programs is used to quantify the effect of concentration of dissolved inorganic nitrogen (DIN) on long-term seawater immersion corrosion loss of structural steels. A linear correlation model that asymptotes the long-term part of the previously proposed bimodal corrosion loss model is used. It allows for average seawater temperature. Model parameters and their variability are determined and reported. The model permits prediction of long-term corrosion loss in nutrient polluted waters of known average temperature. An example shows that anthropological pollution of seawater potentially is a major hazard for corrosion of steel infrastructure.

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Section: Datamentioning

confidence: 99%

Long-term immersion corrosion of steels in seawaters with elevated nutrient concentration

Melchers

2014

Corrosion Science

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“…Corrosion loss data were also available for sheet piling located at eight different US Navy bases (Brouillette and Hanna, 1960), at three US test sites (Escalante et al, 1977;Kumar et al, 1981) and also for piling (and for isolated coupons) exposed at Kure Beach (Humble, 1949) and at Harbor Island (Larrabee, 1958). Details of the sites and the measurement of the corrosion losses at these sites are available in the original references, but suffice to note all exposures were in relatively sheltered waters with low wave action and not subject to high water currents.…”

Section: Vertical Corrosion Profilesmentioning

confidence: 99%

Corrosion of steel piling in seawater harbours

Melchers¹,

Jeffrey²

2014

Proceedings of the Institution of Civil Engineers - Maritime En

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2Unexpectedly high levels of corrosion of sheet and other steel piling were observed in UK harbours during the 1980s, and a phenomenon termed 'accelerated low water corrosion' (ALWC) caused considerable concern about the structural safety of harbour quays and facilities. This paper shows that the severity of corrosion of steel piling both in the tidal zone and in the immersion zone is correlated with the concentration of dissolved inorganic nitrogen (DIN) in the local seawater. In the lower tidal zone this is consistent with the thinning of piles associated with ALWC. Previously it has been shown that in the horizontal direction the ALWC phenomenon is associated with material variability. Models are developed to allow the prediction of expected average corrosion loss both in the immersion zone and for the lower tidal zone (the ALWC effect) as a function of DIN, water temperature and exposure period. Data are presented to show the relatively low beneficial effect of changes in steel composition. It is concluded that for long-term protection against corrosion reliance must be placed on protective and preventive measures. NotationA corrosion loss in ALWC zone c s corrosion loss at time t a c s long-term corrosion loss parameter I mean corrosion loss in the immersion zone N annual mean dissolved inorganic nitrogen concentration P mean corrosion loss in the immersion zone in nutrient polluted waters R A ratio of corrosion loss in ALWC zone compared with corrosion loss in immersion zone 5 A / I R P ratio of corrosion loss in ALWC zone compared with corrosion loss in immersion zone for nutrient polluted waters 5 A / P r s corrosion rate T annual mean water temperature t time (years) t a time for transition from phase 2 to phase 3 t e net exposure period 5 actual exposure period -life of protective coating or cathodic protection

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“…Measurements of corrosion rates of unprotected A 36 and A 690, a copper bearing steel, in sea water and in the atmosphere, Indicated that the corrosion rates of both were very similar, with the A 690 displaying a slight Improvement in performance compared to the A 36. When exposed in a coated condition, their performances were indistinguishable [9]. In the same study, the effectiveness of different types of coatings was examined, and it was found that, of the common coatings available for steel in 1977, a zinc rich epoxy primer with a polyamide cured coal tar epoxy top coat finish provided the best protection.…”

Section: B Ferrous Alloysmentioning

confidence: 99%

“…However, coatings have changed significantly since our study was conducted In 1977 and the choice of a protective system should be made in consultation with reputable coating suppliers.…”

Section: B Ferrous Alloysmentioning

confidence: 99%

Corrosion resistance of materials for renovation of the United States Botanic Garden Conservatory

1994

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Corrosion and protection of steel piles in a natural seawater environment

Cited by 9 publications

References 1 publication

Long-term immersion corrosion of steels in seawaters with elevated nutrient concentration

Long-term immersion corrosion of steels in seawaters with elevated nutrient concentration

Corrosion of steel piling in seawater harbours

Corrosion resistance of materials for renovation of the United States Botanic Garden Conservatory

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