Still, most of the above envisaged end-use applications have not yet met commercial success for one or more of the following reasons: (a) tendency of recyclate addition to negatively affect the mechanical properties of final composite; (b) negative cost balance
in which recycling costs outweighed the market value of virgin product; and (c) incompatibility problems arising from alkalissilica reaction (in the case of cementicious matrix binder and depending of the glass fibre nature).