Nowadays a large number of products for concrete protection are available on the market and the efficacy of these materials still needs more research. This study aimed to evaluate the efficiency of certain surface treatments (such as polyurethane coating, hydrophobic agents and cementitious crystalline) applied on concrete under chloride ions and carbon dioxide exposure. The results indicated that polyurethane coating is efficient against the ingress of aggressive agents. An increase in cement consumption also provided significant reduction in the penetration depths among untreated samples.
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The authors express their gratitude to the Brazilian agencies CNPq, Capes and Araucária Foundation, the Federal University of Paraná (UFPR), the Polytechnic Center, the Department of Civil Construction (DCC), the Post-Graduate Program in Civil Construction Engineering (PPGECC), the Center for Civil Engineering Studies (CESEC), the Laboratory of Materials and Structures (LAME), the Laboratory of Wood Anatomy of UFPR and the Research Group on Pathology and Construction Recovery (PRC).
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Carneiro, A.F.B., Daschevi, P.A., Langaro, E.A. et al. Effectiveness of surface coatings in concrete: chloride penetration and carbonation. J Build Rehabil 6, 3 (2021). https://doi.org/10.1007/s41024-020-00098-8