Estudo literário da dosagem de concreto autoadensável com adição de sílica ativa

Abstract

Self-compacting concrete (SCC) was conceptualized by Prof. Okamura at Kochi University and originated in Japan in 1986, it has the ability to fill the forms and pass between the reinforcements without the aid of immersion vibrators using only its own fastener and is characterized by three properties: fluidity, resistance to segregation and passing capacity. The objective of this research is to determine the ideal range of silica fume (SA) addition in self-compacting concrete (SCC) and its viability in the Goiás trade. In Brazil, its use is not yet fully disseminated, but according to a literature review, it is viable, due to its characteristics of optimizing and facilitating the application and presentation of mechanical results similar or superior to conventional concrete. On the other hand, the cost of its inputs is higher due to the demand for increment with the addition of some type of pozzolanic addition and a higher content of additives or the use of a viscosity-modifying additive. The Goiás market has the feasibility of using the CAA because the necessary inputs for its increase are available in specialized stores and concrete companies in the region.