Surface treatment of reinforced concrete in marine environment: Influence on chloride diffusion coefficient and capillary water absorption

Abstract There are currently many types of protective materials for reinforced concrete structures and the influence of these materials in the chloride diffusion coefficient still needs more research. The aim of this paper is to study the efficacy of certain surface treatments (such as hydrophobic agents, acrylic coating, polyurethane coating and double systems) in inhibiting chloride penetration in concrete. The results indicated that all tested surface protection significantly reduced the sorptivity of concrete (reduction rate > 70%). However, only the polyurethane coating was highly effective in reducing the chloride diffusion coefficient (reduction rate of 86%).

[1]  H. Saricimen,et al.  Effect of waterproofing coatings on steel reinforcement corrosion and physical properties of concrete , 2002 .

[2]  Pam Basheer,et al.  Surface treatments for concrete: assessmentmethods and reported performance , 1997 .

[3]  V. Agopyan,et al.  Concrete protection using acrylic latex paints: Effect of the pigment volume content on water permeability , 2001 .

[4]  Sang-Hun Han,et al.  Influence of diffusion coefficient on chloride ion penetration of concrete structure , 2007 .

[5]  Lars-Olof Nilsson,et al.  Rapid Determination of the Chloride Diffusivity in Concrete by Applying an Electric Field , 1993 .

[6]  P. Helene,et al.  Efficacy of surface hydrophobic agents in reducing water and chloride ion penetration in concrete , 2007 .

[7]  K. K. Asthana,et al.  A novel interpenetrating polymer network coating for the protection of steel reinforcement in concrete , 1999 .

[8]  Cumaraswamy Vipulanandan,et al.  Performance of polyurethane-coated concrete in sewer environment , 2005 .

[9]  Rob B. Polder,et al.  Hydrophobic treatment of concrete , 1997 .

[10]  Mohammed K. Ibrahim,et al.  Effectiveness of concrete surface treatmentmaterials in reducing chloride-induced reinforcement corrosion , 1997 .

[11]  H. Moon,et al.  Evaluation of the durability of mortar and concrete applied with inorganic coating material and surface treatment system , 2007 .

[12]  Omar S. Baghabra Al-Amoudi,et al.  Effectiveness of surface coatings in improving concrete durability , 2003 .

[13]  J. Broomfield.  Corrosion of Steel in Concrete: Understanding, investigation and repair , 1996 .

[14]  C. Page,et al.  Performance characteristics of surface coatings applied to concrete for control of reinforcement corrosion , 2000 .

[15]  B. Scheetz,et al.  Characterization of silicate sealers on concrete , 1997 .

[16]  Marta Castellote,et al.  Round-Robin Test on methods for determining chloride transport parameters in concrete , 2006 .

[17]  Marta Castellote,et al.  Relation between colourimetric chloride penetration depth and charge passed in migration tests of the type of standard ASTM C1202-91 , 1999 .

[18]  Giacomo Cerisola,et al.  Study of the physico-chemical properties oforganic coatings for concrete degradation control , 1997 .

[19]  H. Hilsdorf,et al.  Performance Criteria for concrete Durability , 1995 .

[20]  Marta Castellote,et al.  Non-steady-state chloride diffusion coefficients obtained from migration and natural diffusion tests. Part I: Comparison between several methods of calculation , 2000 .