Corrosão Induzida por Acidithiobacillus  Thiooxidans em Sistemas de Concreto em  Estações de Tratamento de Esgoto

Indira  T. B. B. Oliveira; Nara   O. Yokoyama; Fernando  S.  Ortega

doi:10.19142/rpq.v17i34.699

Indira T. B. B. Oliveira Universidade do Vale do Paraíba, São José dos Campos https://orcid.org/0009-0007-6925-8375
Nara O. Yokoyama Universidade do Vale do Paraíba, São José dos Campos https://orcid.org/0000-0002-2989-2394
Fernando S. Ortega Universidade do Vale do Paraíba, São José dos Campos https://orcid.org/0000-0001-5915-2453

DOI: https://doi.org/10.19142/rpq.v17i34.699

Palavras-chave: corrosão induzida por microrganismo, acidithiobacillus thiooxidans, sistemas de concreto armado. cimento portland, estação de tratamento de esgoto

Resumo

O presente trabalho tem como objetivo discorrer acerca da Corrosão Induzida por Microrganismos (CIM) em concreto armado pela bactéria Acidithiobacillus thiooxidans, em ETE’s. Apresentar-se-ão as características físicas e as reações químicas responsáveis pela diminuição dos valores de pH na superfície de peças em concreto armado. As etapas do processo de consolidação da patologia de obra civil sobrevêm do estabelecimento do revestimento de biofilme, possibilitando a produção de ácidos que diminuirão os valores do pH e o tempo de vida útil de projeto.

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