Madureira, Edmilson LiraRodrigues, Edmilson Correia2014-12-172014-09-232014-12-172014-04-07RODRIGUES, Edmilson Correia. Numerical analysis of the effect of influential factors of alkali-aggregate reaction in the performance of concrete structures. 2014. 123 f. Dissertação (Mestrado em MECÂNICA DAS ESTRUTURAS, ESTRUTURAS DE CONCRETO E ALVENARIA E MATERIAIS E PROCESSOS CONSTRUTIVOS) - Universidade Federal do Rio Grande do Norte, Natal, 2014.https://repositorio.ufrn.br/jspui/handle/123456789/14855The aim of this work is the numerical simulation of the mechanical performance of concrete affected by Alkali-Aggregate Reaction or RAA, reported by Stanton in 1940. The RAA has aroused attention in the context of Civil Engineering from the early 80, when they were reported consequences of his swelling effect in concrete structures, including cracking, failure and loss of serviceability. Despite the availability of experimental results the problem formulation still lacks refinement so that your solution remains doubtful. The numerical simulation is important resource for the assessment of damages in structures caused by the reaction, and their recoveries The tasks of support of this work were performed by means of the finite element approach, about orthotropic non-linear formulation, and, thermodynamic model of deformation by RAA. The results obtained revealed that the swelling effect of RAA induced decline of the mechanical performance of concrete by decreasing the margin of safety prior to the material failure. They showed that the temperature influences, exclusively, the kinetics of the reaction, so that the failure was the more precocious the higher the temperature of the solid mass of concreteapplication/pdfAcesso AbertoEstruturas. Concreto armado. Simulação numérica. Reação álcali-agregadoStructures. Reinforced Concrete. Numerical Simulation. Alcali-Agreggate ReactionmasterThesisCNPQ::ENGENHARIAS::ENGENHARIA CIVIL