A IMPORTÂNCIA DA HIDRATAÇÃO DURANTE O PROCESSO DE CURA PARA SE EVITAR A CARBONATAÇÃO EM ESTRUTURAS DE CONCRETO ARMADO

Abstract

This study addressed carbonation in reinforced concrete structures, highlighting its recurrence and impact on durability and strength. Flaws in the design of the structure were identified, highlighting the importance of pre and post-design. Based on NBR 8681:2003, we explored the consequences of carbonation on the useful life of structures. The general objective was to analyze the impacts of carbonation, including causes, effects and preventive and remedial measures. Specific objectives included observing the formation, investigating causes and prevention methods. The relevance of carbonation to reinforcement corrosion, the risk of cracking and repair costs was highlighted. The carbonation process, influenced by humidity, temperature and concrete composition, was detailed. Identification involved methods such as the phenolphthalein test. Preventive measures included coatings, corrosion-inhibiting additives and surface treatments. Recovery strategies after detection were outlined. The importance of proper design, skilled labor and care when curing concrete was stressed. The relationship between hydration and durability was explored, with emphasis on controlling the heat of hydration. The conclusion emphasized the importance of personal strategies to mitigate the effects of carbonation in reinforced concrete structures.