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GRIGOLI, Ademir Scobin; DJANIKIAN, João Gaspar. Concrete floors and bases of industrial equipments exposed to acid and sulphate environment pathology, performance and repair. In: INTERNATIONAL CONFERENCE ON HIGH-PERFORMANCE CONCRETE, PERFORMANCE AND QUALITY OF CONCRETE STRUCTURES, 3., 2002, Recife. Anais… Recife, 2002.
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Número de Trabalhos: 15 (Com arquivo PDF disponíveis: 4)
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Dados do autor na base InfoHab:
Número de Trabalhos: 14 (Nenhum com arquivo PDF disponível)
Citações: 2
Índice h: 1  
Co-autores: Nenhum co-autor encontrado

Abstract

The present work shows in practice, the dimensionality of structural concrete and concrete of floors with the intent to resist the attack of sulfate and organic and inorganic acid, originating from sugar and alcohol industries located in the northwestern region of the state of Paraná, Brazil. The whole adopted procedure is based on the fact that a concrete executed with common portland cement from the CPI type will deteriorate under the action of sulfate and organic and inorganic acid and that a concrete to face the attack of sulfate and acid, minimizing their aggressive effects, has to have some appropriate characteristics. It has to be executed in a compact way, with cement of low amount of C3A and with high consumption of cement. This work shows in details that the use of concrete with cement of Initial High Resistance, V Type, Resistant to Sulfate, demonstrated a good performance facing the aggressive environment with the presence of sulfate and organic and inorganic acid, increasing the period of productive life of certain floors that used to be one year and now reaches up to five years. The agro-industrial segment of sugar and alcohol must adopt as a reference for its physical installations of simple or reinforced concrete, the type of concrete executed with Initial High Resistance Cement, V Type, Resistant to Sulfate, with the addition of silica fume and superplasticizer and with a consumption of cement which is superior to 600kg/m3. Certainly, it is impossible to completely eliminate the deterioration of concrete by the aggressive action of sulfate and acid. What remains is the purpose to be able to extend the productive life of the concrete structures analyzed in the present work, what was properly elucidated and justified.
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