Utilização de resíduo moído de vidro industrial na confecção de argamassa de cimento Portland em Porto Velho/RO

Abstract

The disposal of solid waste in civil construction has generated over the years an increasing concern, either as to its use or its destination. Among these materials that need disposal, glass plays an important role, since the number of research is increasing Which address their reuse. The aim of this dissertation was to evaluate the introduction of ground glass waste (RMV) as a partial replacement of the cement in Portland cement mortars, observing the influence of grinding times and percentage of substitution on Portland cement mortars. The research was developed based on an adaptation of Standard NBR 15.577-4: 2008, which defined the grinding times of 16, 32, 48 and 72 hours of glass residue, as well as the percentages of partial replacement of the 10%, 20%, 30% and 40%. It was observed only the grinding times of 16 and 32 hours, aiming to evaluate the results of the compressive strength, partial substitutions of 10%, 15% and 20% were applied. Also, for the same milling times, according to NBR 5752: 1992, the pozzolanic properties of the glass residues were verified. In statistical terms, there were no great variations in the compressive strength when the milling times were changed to the same replacement percentage. However, the percentage of 20% for the times of 16 and 32 hours presented the best results. For these times, respectively, pozzolanic activity indexes were 103.3% and 98.5%. The variation of grinding times did not interfere with the results of the expansions. The minimum percentage of substitution of 10% of glass residue was favorable to the reduction of the aggregate alkali reaction.