WASTE PRINTED CIRCUIT BOARDS FOR THE MORTAR PRODUCTION
| Reference | Presenter | Authors (Institution) | Abstract |
|---|---|---|---|
| 13-005 | José Ricardo Ferrari | Ferrari, J.R.(Instituto Federal do Espírito Santo); Silva, R.V.(Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo); Louzada, D.M.(Instituto Federal do Espírito Santo); Tinti, I.C.(Instituto Federal do Espírito Santo); | The fastest growth in consumption of
electro-electronic products that quickly become obsolete, results in a large
volume of waste, called electronic waste. Public service actions for the
correct disposal of these products are scarce and few companies assume the
responsibility for collecting and recycling them, as recommended by Law No.
12,305 / 10 of the National Policy on Solid Waste. In this context the proposal
of this work is to contribute to reuse of this type of waste and consequently
to minimize the environmental impacts generated by its inappropriate disposal. Therefore,
the aim of this work is to evaluate the effect of the addition of printed
circuit boards crushed in mortars. Printed circuit boards taken from computers,
wireless phones, remote control, and computers power supply were used in this
work. For this purpose, a cleaning was carried out using a hot air blower to
remove the components of the printed circuit boards which were later crushed
and separated by sieving in four granulometric ranges: 0.15; 0.3; 0.6 and 1.2 mm. Mortars were
prepared by replacing 5% by weight of the sand by equivalent volume of the
ground residue of each granulometric range. It was also prepared a reference
mortar without residue. The procedure for preparing, molding and curing the
mortars followed NBR 7215/1996. For mortars characterization were realized de
following tests: Axial compression strength, Water absorption, Void content and
Specific mass. The results showed that the addition of the residue promoted
increase of the voids content and reduction of the water absorption of the
mortars. Regarding the axial compression strength, there was no significant
variation in the results for the different granulometric ranges, compared to
the reference mortar. The results indicate that the residue of printed circuit
board can be used in the mortar manufacture without prejudice to its main
properties.<!--[if gte mso 9]> |