EVALUATION OF POZOLANICITY OF GRANITE ROCK FINE (STONE POWDER)

Reference Presenter Authors
(Institution)
Abstract
04-035 José da Silva Andrade Neto SANTOS, T.A.(Federal University of Bahia); Andrade Neto, J.d.(Federal University of Bahia); Amorim Júnior, N.S.(Federal University of Bahia); RIBEIRO, D.V.(Federal University of Bahia); The world is going through a process of intense technological development, resulting in increased emissions of polluting gases to the atmosphere, extraction of non-renewable natural resources and contamination of soils, rivers and groundwater by the inadequate disposal of solid waste. Thus, a search for the development of more advanced and less aggressive to the environment technologies has started, which also proposes viable alternatives for reducing and reusing the generated waste. Within this context, granite rock fine (particles smaller than 75 um) is the residue generated in the comminution process of the granite rock blocks, aiming to obtain aggregates for civil construction, and that does not yet have an effective reuse plan. Thus, the present study aims to evaluate the pozzolanicity of crushing fines from two different quarries in the metropolitan region of Salvador, Bahia, Brazil, through the partial replacement of Portland cement in cementitious matrixes. For this, the chemical titration method proposed by Fratini, the method proposed by Chapelle and the pozzolanic activity index (PAI) with cement were used. The results indicated that the fines present a reasonable pozzolanic activity, evidencing the potentiality of the use of this residue.
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