Evaluation of concretes produced with different ore sands: in search of high-performance and sustainable dosages
DOI:
https://doi.org/10.19180/1809-2667.v26n22024.23416Keywords:
ore sand, concrete dosage, sustainability, circular economyAbstract
The sand from the processing of iron ore has been widely used in civil construction in Brazil, especially in the states of Minas Gerais, Espírito Santo and São Paulo. It is used as fine aggregate in the production of mortars, cement products and concrete. With the possibility of producing new sand in several iron ore mines in the state of Minas Gerais, the present study aimed to develop and analyze concrete dosages with various ore sands and sands present in the industrial market in the Belo Horizonte region. The replacement of natural river sand with mining sand in concrete dosages was evaluated and the Abrams curves were analyzed for the various dosages developed. It was possible to observe a performance gain in the dosages carried out with ore sands, with a reduction of up to 7% in cement consumption in the mixes. Thus, it can be concluded that the use of mining sand in the production of concrete is efficient, with technical and productive gains, promoting sustainable construction, reducing CO2 and promoting the circular economy in the construction chain.Downloads
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