Abstract:
Em virtude da influência do ambiente marítimo sobre as estruturas de concreto,
essa pesquisa tem por objetivo avaliar os perfis de cloreto ao longo do tempo de uma obra real (tetrápodes), considerando a variação de Cs (concentração superficial de cloreto no concreto) ao longo do tempo. Bons resultados foram obtidos para o coeficiente de difusão (D) e teor de cloreto na superfície do concreto (Cs) os quais demonstraram estar de acordo com a realidade
dos micro-ambientes dos tetrápodes. Houve a tentativa de adaptar esses parâmetros ao modelo proposto por Cranck [3] a fim de traçar um modelo para a previsão do comportamento dessas estruturas, porém, o modelo em questão demonstrou algumas discrepâncias ao longo da profundidade do concreto. Por outro lado, a partir de estimativas (regressão)foi possível traçar esses perfis de previsão do comportamento, os quais demonstraram estar próximos aos perfis reais de cloreto obtidos nas idades estudadas.
In view of the influence of the marine environment on the concrete structures,
this research has for objective to evaluate the chloride profiles throughout the time of a real work (tetrapods),considering the variation of Cs (chloride concentration in the surface of the concrete) throughout the time. Good results were obtained for the diffusion coefficient (D) and chloride concentration in the surface of the concrete (Cs) which had demonstrated to be in accordance to the reality of micro-environments of tetrapods. There was the attempt to adapt these parameters to the model proposed by Cranck [3] in order to trace a model for predicting of the behavior of these structures, however, the model in question demonstrated some discrepancies along the depth of the concrete. On the other hand, in from estimates (regression) it was possible to trace these profiles of forecast of behavior, which had
demonstrated to be close to the real profiles of chloride in the studied ages.
