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| Azevedo, Nuno Monteiro |
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Fiuza, Antonio
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- 2021Appraisal of the Laboratory-Scale Tests for Bioleaching of Low-Grade Heavy Metal-(oid) s Resources
- 2016Arsenic removal using “green” Nano Zero valent iron
- 2015SUSTAINABILITY IMPROVEMENT OF A COMPOSITE MATERIALS' INDUSTRY THROUGH RECYCLING AND RE-ENGINEERING PROCESS APPROACHES
- 2013Mix design process of polyester polymer mortars modified with recycled GFRP waste materialscitations
- 2011Mathematical modeling and simulation of heat flow through pultrusion die assembly system for thermoset composites
- 2010Insight into the Phenomenology of the Cr(VI) Reduction by Metallic Iron Using an Electron Probe Microanalyzercitations
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article
Mix design process of polyester polymer mortars modified with recycled GFRP waste materials
Abstract
In this study, the effect of incorporation of recycled glass fibre reinforced plastics (GFRP) waste materials, obtained by means of shredding and milling processes, on mechanical behaviour of polyester polymer mortars (PM) was assessed. For this purpose, different contents of GFRP recyclates, between 4% up to 12% in weight, were incorporated into polyester PM materials as sand aggregates and filler replacements. The effect of the addition of a silane coupling agent to resin binder was also evaluated. Applied waste material was proceeding from the shredding of the leftovers resultant from the cutting and assembly processes of GFRP pultrusion profiles. Currently, these leftovers as well as non-conform products and scrap resulting from pultrusion manufacturing process are landfilled, with additional costs to producers and suppliers. Hence, besides the evident environmental benefits, a viable and feasible solution for these wastes would also conduct to significant economic advantages. Design of experiments and data treatment were accomplish by means of full factorial design approach and analysis of variance ANOVA. Experimental results were promising toward the recyclability of GFRP waste materials as partial replacement of aggregates and reinforcement for PM materials, with significant improvements on mechanical properties of resultant mortars with regards to waste-free formulations.