Concrete with treated surface and exposed to chlorides solution: thickness of equivalent coatings
Abstract
The main purpose of the experimental tests was to obtain the chloride diffusion coefficient and generate a chloride ingress prediction for surface treated concrete that could be valid during the initiation stage and transport by ions diffusion. The prediction was based on non steady-state conditions and some of the results indicated that a concrete with this type of protection can extend the chloride ingress up to three times. Data showed in this work indicated the equivalent cover of the surface treatment, ranging between 0.3 and 3.4 cm, showing large variations in results among the surface treatment materiais tested.
Keywords: reinforced concrete, marine environment, chloride migration, service life.
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References
Al-Zahrani, M. M., Al-Dulaijan, S. U., Ibrahim, M., Saricimen, H., Sharif, F. M. (2002), “Effect of waterproofing coatings on steel reinforcement corrosion and physical properties of concrete”, Cement and Concrete Composites, v. 24, pp. 127-137. DOI: https://doi.org/10.1016/S0958-9465(01)00033-6
Andrade, C., Castellote, M., Alonso, C., González, C. (1999), “Relation between colorimetric chloride penetration depth and charge passed in migration tests of the type of standard ASTM C1201-91”, Cement and Concrete Research, v. 29, pp. 417–21. DOI: https://doi.org/10.1016/S0008-8846(98)00226-9
Andrade, C., Castellote, M., Alonso, C., González, C. (2000), “Non-steady-state chloride diffusion coefficients obtained from migration and natural diffusion tests – part I: comparison between several methods of calculation”, Materials Structures, v. 33, pp. 21–28. DOI: https://doi.org/10.1007/BF02481692
ASTM C 1202 – 2012 Standard test method for electrical indication of concrete’s ability to resist chloride ion penetration. American Society for Testing and Materials, USA, 2012.
Batista, M. (1998), “Siloxane and silane—perfects hydrophobics agents for all situations”, Recuperar Magazine, v. 23, pp. 14–19.
Boletin 152 Durability of concrete structures. Comitê Euro-Internacional Du Béton. CEB 152: Europe, 1992.
Brough, A. R., Atkinson, A. (2002), “Sodium silicate-based, alkali-activated slag mortars - Part I. Strength, hydration and microstructure”, Cement and Concrete Research, v. 32, pp. 865–879. DOI: https://doi.org/10.1016/S0008-8846(02)00717-2
BS 8110-1 Structural use of concrete. Code of practice for design and construction. British Standards Institution, England, 1997.
Castellote, M., Andrade, C. (2006), “Round-Robin test on methods for determining chloride transport parameters in concrete”, Materials and Structures, v. 39, pp. 955–90. DOI: https://doi.org/10.1617/s11527-006-9193-x
Castro-Borges, P., Helene, P. (2007), “Service life concepts of reinforced concrete structures - New approach” in: Proceedings of the Corrosion of Infrastructure, 3º, p. 9-14. DOI: https://doi.org/10.1149/1.2721426
De Coss, R., Murrieta, G., Castro, P. (1998), “Effect of weather cycles on chloride diffusion in porous concrete” in: P. Castro, O. Troconis, C. Andrade (Eds.), Rehabilitation of Corrosion Damaged Infrastructure, NACE International, Houston: TX (USA), pp. 285-293.
Delucchi, M., Barbucci, A., Cerisola, G. (1998), “Crack-bridging ability and liquid water permeability of protective coatings for concrete”, Progress in Organic Coatings, v. 33, pp. 76-82. DOI: https://doi.org/10.1016/S0300-9440(98)00012-5
EN-206-Part 1 Concrete – Especification, performance, production and conformity. European Committee for Standardization, Europe, 2007.
Ibrahim, M., Al-Gahtani, A. S., Maslehuddin, M., Almusallam, A. A. (1997), “Effectiveness of concrete surface treatment materials in reducing chloride-induced reinforcement corrosion”, Construction and Building Materials, v. 11, n. 7-8, pp. 443-451. DOI: https://doi.org/10.1016/S0950-0618(97)00023-8
Gjorv, O. E. (2014), “Durability design of concrete structures in service environments” (New York, EUA: CRC Press), 2st edn., pp. 249.
Helene, P. (1993), “Contribuição ao estudo da corrosão em armaduras de concreto armado”, Tese de Livre Docência, Escola Politécnica, Universidade de São Paulo, São Paulo, p. 231.
Helene, P. (2000), “Durabilidad. Interpretación y evaluación de resultados. Manual de Diagnosis e Intervención en Estructuras de Hormigón Armado” (Barcelona, Espanha: Collegi d’Aparelladors i Arquitectes Tècnics de Barcelona), 1th edn., p. 87-102.
Jacob, T., Hermann, K. (1998), “Protection of concrete surfaces: hydrophobic impregnations”, Construcción y Tecnología, pp. 18–23.
Jones, J. W. (2002), “Method of Hardening and Polishing concrete floors, walls, and the Like”, United States Patents. Tatent number: US 6,454,632 B1. Sep. 24, 2002.
Kagi, D. A., Ren, K. B. (1995), “Reduction of water absorption in silicate treated concrete by post-treatment with cationic surfactants”, Building and Environment, v. 30, n. 2, p. 237-243. DOI: https://doi.org/10.1016/0360-1323(94)00047-V
Bentur, A., Diamond, S., Berke, N. S. (1997), “Steel Corrosion in Concrete – Fundamentals and Civil Engineering Practice” (London, Inglaterra: E&FN SPON), 1th edn., pp. 197. DOI: https://doi.org/10.1201/9781482271898
Luping, T., Nilsson, L. (1992), “Rapid determination of the chloride diffusivity in concrete by applying an electrical field”, ACI Materials Journal, v. 89, n. 1, pp. 49–53. DOI: https://doi.org/10.14359/1244
Mariconi, G., Tittarelli, F., Corinaldesi, V. (2002), “Review of silicone-based hydrophobic treatment and admixtures for concrete”, Indian Concrete Journal, v. 76, n. 10, pp. 637-642.
Medeiros, M. H. F., Helene, P. (2009), “Surface treatment of reinforced concrete in marine environment: Influence on chloride diffusion coefficient and capillary water absorption”, Construction and Building Materials, v. 23, pp. 1476-1484. DOI: https://doi.org/10.1016/j.conbuildmat.2008.06.013
Medeiros, M. H. F., Helene, P. (2008), “Efficacy of Surface Hydrophobic Agents in Reducing Water and Chloride Ion Penetration in Concrete”, Materials and Structures, v. 41, n. 1, pp. 59-71. DOI: https://doi.org/10.1617/s11527-006-9218-5
Medeiros, M. H. F., Hoppe Filho, J., Helene, P. (2009), “Influence of the slice position on chloride migration tests for concrete in marine conditions”, Marine Structures, v. 22, pp. 128-141. DOI: https://doi.org/10.1016/j.marstruc.2008.09.003
Medeiros, M. H. F., Helene, P. (2009), “Durability and protection of reinforced concrete”, Techne, v. 151, pp. 50-54.
Medeiros, M. H. F., Pereira, E., Figura, A. S., Tissot, F. M., Artioli, K. A. (2015), “Avaliação da eficiência de sistemas de proteção de superfície para concreto: absorção de água, migração de cloretos e ângulo de contato”, Matéria (UFRJ), v. 20, pp. 145-159. DOI: https://doi.org/10.1590/S1517-707620150001.0015
Mehta, P. K., Monteiro, P. J. (2008), “Concrete: Structure, Properties, and Materials”, (New Jersey, EUA: Prentice Hall), 3th edn.
Melo Neto, A. A., Cincotto, M. A., Repette, W. L. (2009), “Drying autogenous shrinkage of pastes and mortars with activated slag cement”, Cement and Concrete Research, v. 38, pp. 565-574. DOI: https://doi.org/10.1016/j.cemconres.2007.11.002
Seneviratne, A. M., Sergi, G., Page, C. L. (2000), “Performance characteristics of surface coatings applied to concrete for control of reinforcement corrosion”, Construction and Building Materials, v. 14, pp. 55-59. DOI: https://doi.org/10.1016/S0950-0618(00)00011-8
Thompson, J. L., Silsbee, M. R., Gill, P. M., Scheetz, B. E. (1997), “Characterization of silicate sealers on concrete”, Cement and Concrete Research, v. 27, n. 10, pp. 1561-1567. DOI: https://doi.org/10.1016/S0008-8846(97)00167-1
Tolêdo Filho, R. D., Ghavami, K., George, L. (2003), “England and Karen Scrivener Development of vegetable fibre–mortar composites of improved durability”, Cement and Concrete Composites, v. 25, n. 2, pp. 185-196. DOI: https://doi.org/10.1016/S0958-9465(02)00018-5
Uemoto, K. L., Agopyan, V., Vittorino, F. (2001), “Concrete protection using acrylic latex paint: Effect of the pigment volume content on water permeability”, Materials Structures, v. 34, pp. 172-177. DOI: https://doi.org/10.1007/BF02480508
Vipulanandan, C., Liu, J. (2005), “Performance of polyurethane-coated concrete in sewer environment”, Cement and Concrete Research, v. 35, pp. 1754–63. DOI: https://doi.org/10.1016/j.cemconres.2004.10.033
Vries, J., Polder, R. B. (1997), “Hydrophobic treatment of concrete”, Construction and Building Materials, v. 11, n. 4, pp. 259-265. DOI: https://doi.org/10.1016/S0950-0618(97)00046-9
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