Figures & data
1 TO-glass obtained by vitrification of ash from combustion of woodchipsCitation23
Table 1 Chemical composition (wt-% oxides, XRF) of SW ash before (SW-ash) and after washing process (SW-ash48) and glasses obtained by vitrification of TO, SO and SW ashes (TO-glass, SO-glass and SW-glass) (LOI, loss on ignition at 950°C)
Table 2 Composition of mortars prepared according to UNI-EN 196-1
2 XRD analysis of SW ash a before and b after 48 h washing with distilled water
3 XRD analysis of a TO ash vitrified at 1500°C for 1 h and b TO ash vitrified at 1300°C for 1 h
Table 3 Vickers hardness of vitrified TO, SO and SW ashes
Table 4 Pozzolanic activity of vitrified ashes (TO-glass, SO-glass, SW-glass, TO-1300 and SO-1300) and SW after 48 h washing (SW-ash48) according to UNI-EN 196-5
4 Compressive strength of mortars prepared according to UNI-EN 196/1: a reference mortars n.2 and 4 and mortars prepared by replacing 30 wt-% of CEM II A-LL 42.5 R with TO-1300 and SO-1300 glass–ceramics and SW-ash48; b reference mortars n.1 and 3 and mortars prepared by replacing 30 wt-% of CEM II A-LL 42.5 R with vitrified biomass ashes (TO-glass, SO-glass and SW-glass); compositions of mortars in
5 SEM analysis of polished surface of SW-glass based paste (after 28 days of curing)
6 a, b magnification of SW-glass/cement interface (fracture surface) and EDS analysis in regions ‘1’ (SW-glass particle) and ‘2’ (interface zone); SW-glass based paste after 28 days of curing
7 SEM analysis of a polished and b fracture surfaces of TO-1300 based paste (after 28 days of curing)
