Effect of Organic Corrosion Inhibitor on Mechanical and Transport Properties of concrete

Abstract

In this paper, the effect of organic corrosion inhibitors on Mechanical and Transport Properties of concrete was studied. Two types of organic inhibitors, one is added to the concrete mix (sika Ferrogard®-901), and another one applied on the concrete surface (sika Ferrogard®-903. The properties of the fresh concrete (workability and air content) and of the hardened concrete (compressive strength, Porosity, and water absorption) were evaluated. The transport properties (permeability, capillary absorption, and diffusion) were also evaluated. From the results, it was found that the effect of the organic inhibitor (Ferrogard®-901) was clear on the properties of fresh concrete. so that Workability increased with the addition of organic corrosion inhibitors. The effect of (OCI) on the compressive strength at all ages was not significant. The effect of organic inhibitors on the porosity of concrete was also not significant, although the porosity of the samples with Ferrogard®-901 was lower. As for the permeability test, both samples containing (sika Ferrogard®-901) and (sika Ferrogard®-903) outperformed the control sample. In addition to the clear effect of (sika Ferrogard®-901) in reducing the permeability. Both organic inhibitors affected the diffusion and capillary absorption of concrete.he