Probabilistic Assessment of CO₂ due to Concrete Repairs for Crack-Free Condition of Marine Concrete Structures

Abstract:

An approach which combines the Latin Hypercube technique with Crank-Nicolson based finite difference approach is developed for probabilistic assessment of chloride diffusion in concrete structures with repairs. Two random variables, i.e., surface chloride and diffusion coefficient, are considered. Four repair strategies are proposed by varying the diffusion coefficient of repair concrete and the repair depth. A repair by cover replacement is applied at a critical time which the chloride content at a threshold depth reaches its critical value for concrete cracking. The critical time is defined as the repair time, which the CO₂ due to repair concrete production and replacement processing occurs. By this method, the median of repair time and the probabilistic time-dependent CO₂ can be assessed. The mean and the percentiles of cumulative total CO₂ are compared.

• Periodical: Advanced Materials Research (Volumes 931-932)
• Pages: 426-430
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.931-932.426
• Online since: May 2014
• Authors: Aruz Petcherdchoo*
• Keywords: CO₂, Concrete Repairs, Crack-Free, Marine Concrete, Probabilistic Assessment

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