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...Cracks repair in reinforced concrete structures case study tunnel david de almeida araujo master dissertation civil engineering extended abstract the use of epoxy resins by injection or just sealing constitutes most common solution for however products are not able to fix properly all cracking problems such as active presence moisture this purpose existence polyurethane and acrylic is a good solve these paper describes briefly behaviour towards anomaly detailing causes characteristics then review standard en presented concerning performance requirements conformity assessment test methods further materials equipment procedures also described lastly project that involved using different techniques introduction although present satisfactory there deterioration many commonly manifested due can affect appearance indicate significant structural durability favourable conservation status improves functionality structure ensuring resistance rigidity surface impermeability water entrance aggress...