LIFE-365 SERVICE LIFE PREDICTION MODEL

Corrosion protection systems for structures offer significant differences in terms of technical merits and costs, so a life-cycle cost analysis (LCCA) can be useful in choosing the optimum corrosion protection strategy. LCCA can weigh the increased initial costs for a system against the potential extension of the structure's service life. This paper reports on the development of a new service life and LCCA computer model, called Life-365, that was developed by an industry, government and academic consortium. Life-365 is used to predict the time to the onset of corrosion, and the time for corrosion to reach a level requiring repair. The model can then estimate costs over the entire design life of a structure, including initial construction costs and predicted repair costs. Life-365 has been in use for two years, and feedback from engineers has been positive. The model recently was used to choose corrosion protection systems for a high-performance concrete bridge that would extend its estimated service life from 13 years to 75 years before the first significant repair.

Language

  • English

Media Info

  • Features: Figures;
  • Pagination: p. 53-57
  • Serial:
    • Concrete International
    • Volume: 24
    • Issue Number: 12
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00935770
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 21 2003 12:00AM