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Life Cycle Costs For Thermal Spray Zinc Duplex Coatings On Long Lifetime Steel Constructions

Picture for Life Cycle Costs For Thermal Spray Zinc Duplex Coatings On Long Lifetime Steel Constructions
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Very often the life of a corrosion protection paint coating system will not meet the design life of the steel structure it is supposed to protect. Decisions about coating selection are usually focusing on the costs for the initial construction, ignoring the certain future maintenance costs. The total cost of ownership includes the initial cost plus the maintenance, operating and finance costs over the life of a structure. Repeated maintenance operations, and resulting downtime, can add significantly to the total cost of ownership.

Product Number: 51322-17803-SG
Author: M. Gagné, O.Ø. Knudsen, K. O. Dahle
Publication Date: 2022
Industries: Corrosion Monitoring and Control , Coatings and Linings , Coatings
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$20.00
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Public infrastructures like bridges typically have a design lifetime of 100 years or more. When selecting protective coatings in such a long term perspective, focus should be on life cycle costs and not only the costs in the construction phase, since the maintenance costs may be considerable and dominate the total cost of ownership. Coating selection standards like ISO 12944 are not intended for such a long timescale, and there is little documentation in the literature of coating performance with lifetimes of more than about 20 years. Owners of structures with very long lifetimes have little information to base their coating selection on, besides their own experiences. Thermal spray zinc (TSZ) duplex coatings have been shown to be highly durable, as evidenced by more than 50 years of successful use since first specified by the Norwegian Public Roads Administration (NPRA). The paper will summarize field examinations, maintenance costs, coating lifetime expectations and life cycle cost estimates for steel bridges as a function of the environmental corrosivity category (C1-C5) and make comparisons to alternative coatings that are less expensive to apply but that have shorter lifetime expectancy.

Public infrastructures like bridges typically have a design lifetime of 100 years or more. When selecting protective coatings in such a long term perspective, focus should be on life cycle costs and not only the costs in the construction phase, since the maintenance costs may be considerable and dominate the total cost of ownership. Coating selection standards like ISO 12944 are not intended for such a long timescale, and there is little documentation in the literature of coating performance with lifetimes of more than about 20 years. Owners of structures with very long lifetimes have little information to base their coating selection on, besides their own experiences. Thermal spray zinc (TSZ) duplex coatings have been shown to be highly durable, as evidenced by more than 50 years of successful use since first specified by the Norwegian Public Roads Administration (NPRA). The paper will summarize field examinations, maintenance costs, coating lifetime expectations and life cycle cost estimates for steel bridges as a function of the environmental corrosivity category (C1-C5) and make comparisons to alternative coatings that are less expensive to apply but that have shorter lifetime expectancy.

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51322-18207-SG
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Combining Thermal Spray Zinc And Hot-Dip Galvanizing To Achieve An All Metallic Zinc Coating System

Product Number: 51322-18207-SG
Author: Bernardo Duran
Publication Date: 2022
$20.00

Corrosion protection of infrastructure and assets is an area of increasing focus due to increasing financial and safety concerns. On a global scale, corrosion has an annual cost of $2.5 trillion (USD).1 To combat the deleterious effects of this natural phenomenon, specifiers and owners have many choices in terms of materials and protective coatings. Consideration of both initial and life cycle costs has become more important in the age of increased competition and shrinking maintenance budgets.  
Picture for Protecting Steel Structures From Corrosion With Thermal Sprayed Zinc Duplex Coatings
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Protecting Steel Structures From Corrosion With Thermal Sprayed Zinc Duplex Coatings

Product Number: 51321-16512-SG
Author: M. Gagné/ Ole Knudsen
Publication Date: 2021
$20.00
Picture for Coating Systems with Long Lifetime - Painting Thermally Sprayed Zinc
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51316-7383-Coating Systems with Long Lifetime - Painting Thermally Sprayed Zinc

Product Number: 51316-7383-SG
ISBN: 7383 2016 CP
Author: Ole Knudsen
Publication Date: 2016
$20.00
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