• Latest news

    Latest news

  • Latest news

    Latest news

  • Home
  • Blog
  • Structural Concrete, Vol. 4, no. 2, June 2003

Structural Concrete, Vol. 5, no. 1, March 2004

Chloride profiles and diffusion coefficients in structures located in marine environments

A. A. Di Maio, CONICET-LEMIT, Argentina
L. J. Lima, University of La Plata, Argentina
L. P. Traversa, CIC-LEMIT, Argentina

Steel corrosion is one of the main causes of damage in reinforced concrete structures. Recent studies carried out in Argentina indicate that the percentage of damage in concrete structures induced by corrosion of reinforcement is 16%. In structures located in marine environments the corrosion is due fundamentally to the action of chlorides. Chlorides penetrate concrete by different processes; in structures exposed to atmosphere, the ingress process is by diffusion. Ingress depends on the characteristics of concrete and of its distance to the sea (marine environment). In this paper, assessment of durability of concrete structures exposed to marine (Atlantic Ocean coast) environments is reported. The ages of the evaluated structures, bridges and buildings, vary between five and 67 years. Surface chlorides concentration (environmental loads) and the effective diffusion coefficient, calculated using Fick's second law, are included. Furthermore, the quality of the cover concrete is characterised by means of the specific gravity and porosity accessible to water methods.

fib postal address

Case postale 88
CH-1015 Lausanne
Switzerland

Contact

p : +41 21 693 27 47
f : +41 21 693 62 45
e : info@fib-international.org
w : www.fib-international.org

Follow fib

Subscribe our newsletter

 Follow us on
        

Join the fib

Join the fib