The GFRP recyclates were characterised with respect to organic and inorganic fraction contents and particle size distribution. The results of burning tests carried out on five random samples showed a composition with an average inorganic material content of 71% (w/w) corresponding to glass (55% w/w) and calcium carbonate (16% w/w), and an average resin content of 29% (w/w). The particle size distributions of both types of recycled wastes, obtained by sieving and laser diffraction techniques, showed a range of particle sizes ranging from 1.5 lm up to 1800 lm or 2500 lm, with an average particle(or fibre) diameter of 390 lm or 950 lm, and a fineness modulus of 1.64 or 2.69, for FW or CW admixtures,respectively. Both grades of recyclates have the same proportion of glass fibre,calcium carbonate and organic resin and only differ with regard to particle size
distribution. Siliceous foundry sand (SP55, Sibelco Lda), with a rather uniform particle size between 50 lm and 850 lm, and an average diameter of 245 lm,was used as sand aggregate. Additional information concerning the particle size distributions of GFRP waste recyclates and sand aggregates can be found in Ribeiroet al.
The GFRP recyclates were characterised with respect to organic and inorganic fraction contents and particle size distribution. The results of burning tests carried out on five random samples showed a composition with an average inorganic material content of 71% (w/w) corresponding to glass (55% w/w) and calcium carbonate (16% w/w), and an average resin content of 29% (w/w). The particle size distributions of both types of recycled wastes, obtained by sieving and laser diffraction techniques, showed a range of particle sizes ranging from 1.5 lm up to 1800 lm or 2500 lm, with an average particle(or fibre) diameter of 390 lm or 950 lm, and a fineness modulus of 1.64 or 2.69, for FW or CW admixtures,respectively. Both grades of recyclates have the same proportion of glass fibre,calcium carbonate and organic resin and only differ with regard to particle sizedistribution. Siliceous foundry sand (SP55, Sibelco Lda), with a rather uniform particle size between 50 lm and 850 lm, and an average diameter of 245 lm,was used as sand aggregate. Additional information concerning the particle size distributions of GFRP waste recyclates and sand aggregates can be found in Ribeiroet al.
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