Research Article Open Access

Uncertainty Impact of the Effective Diffusion Coefficient on the Concrete Chemical Degradation

A. Badaoui1
  • 1 National School of Built and Ground Works Engineering, Algeria
American Journal of Engineering and Applied Sciences
Volume 8 No. 3, 2015, 417-421

DOI: https://doi.org/10.3844/ajeassp.2015.417.421

Submitted On: 28 January 2015 Published On: 23 July 2015

How to Cite: Badaoui, A. (2015). Uncertainty Impact of the Effective Diffusion Coefficient on the Concrete Chemical Degradation. American Journal of Engineering and Applied Sciences, 8(3), 417-421. https://doi.org/10.3844/ajeassp.2015.417.421

Abstract

Reinforced concrete is the construction material widely used in civil engineering. However, knowledge of its long-term performance and the uncertain impact of the environment on his behaviour make it difficult to accurate assessment of the durability of structures with time. When a structure is put into service, it is likely to damage, which origin can be physical, mechanical or chemical. Chemical factors are frequently the most important, since the concrete can be degraded by reaction (dissolution, swelling) of the concrete constituents. In this paper, a probabilistic formulation is applied to carbonation phenomenon and statistics regarding carbonation time required for the carbonation depth reaches the reinforcement concrete are investigated by performing a parametric analysis which integrates the influence of variation of porosity and effective diffusion coefficient of carbonic gas.

  • 695 Views
  • 1,282 Downloads
  • 0 Citations

Download

Keywords

  • Chemical Factors
  • Carbonation Kinetics
  • Carbonation Time
  • Coefficient of Variation
  • Carbonic Gas CO2