STUDY OF THE REPLACEMENT OF PORTLAND CEMENT FOR GROUND GLASS IN THE PRODUCTION OF MORTAR

Reference	Presenter	Authors (Institution)	Abstract
04-041	Erica Natasche de Medeiros Gurgel Pinto	Pereira, M.M.(Universidade Federal Rural do Semi-Árido); Silva, I.P.(Universidade Federal Rural do Semi-Árido); FREITAS, F.G.(Universidade Federal Rural do Semi-Árido); Pinto, E.N.(Universidade Federal Rural do Semi-Árido); Cabral, K.C.(Universidade Federal Rural do Semi-Árido);	Due to the scarcity of the thin aggregates and the elevated cust in the production of agglomerant, together with the major environmental problems caused by its production has been each time more common to search for alternative materials to be used in the replacement in the components of the mortar. In the context, the use of waste of the glass powder for replacement of agglomerant in the production of mortar can present as an alternative highly viable. This material inert and homogeneous is compound by more of 70% of silica (SiO2), which it can confer good proprieties pozzolanic. On this, the present article proposes to analyze the viability of the use of residues of glass as agglomerant material in the replacement of the cement in the production of mortar. The research had as methodology the experimental and comparative analysis where for this was accomplished tests of characterization of the sand and of the glass powder, as well as, consistency test and compression strength test in the proof bodies of mortar. The proof bodies of reference were elaborated with mortar composed of a part of cement, three of normalized sand, in mass. While that the proof bodies with addition of glass powder had 10, 15, and 20% of replacement of the cement. From the results obtained, it can be observed that the ground glass did not improve the performance of the mechanic properties, even to 28 days of cure. Moreover, the material stayed more consistent, which it would take the necessity of adding extra of water. Therefore, it concludes that is required to do an adjustment in the trace of the concrete for improving of the performance of the ground glass as a pozzolana.
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