88449 ⎘
Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone ; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Waste materials; Refuse; Combustion residues, e.g. purification products of smoke, fumes or exhaust gases; Burned or pyrolised refuse involving a melting step