Recycled soda-lime glass, feldspar mining residues and lime from fume abatement systems have been employed for the production of two glasses, later converted into wollastonite-based glass-ceramics. The glass-ceramics were developed by sintercrystallization, starting from fine powders (<37 μm), for short sintering times at 930°C. The properties of the glass-ceramics were due to both the enhanced nucleating activity of glass surfaces and the formation of micro-porosity. The relevant mechanical properties (bending strength and Vickers’ micro-hardness exceeding 130 MPa and 8 GPa, respectively, for samples sintered for only 30 min), make the investigated glass-ceramics suitable for construction applications
