Use of Sawing Waste from Zeolitic Tuffs in the Manufacture of Ceramics

Table 4

Weight loss (Δ𝑚 %) and linear shrinkage (Δ𝑑 %) of compacts arising from various thermal treatments.

(a) Thermal treatments summarised in Table 1b

	Cab70		LacBen
T(^∘C)	Δ𝑚 %	Δ𝑑 %	Δ𝑚 %	Δ𝑑 %
500	8.2	0.4	8.8	1.8
700	11.4	1.3	11.5	3.2
800	12.7	2.8	13.9	3.5
900	12.8	3.9	14.2	4.7
1000	14.9	5.5	14.5	15.9
1200	melting	–	melting	–

(b) Thermal treatments summarised in Table 1c

	Cab70		LacBen
T (^∘C)	Δ𝑚 %	Δ𝑑 %	Δ𝑚 %	Δ𝑑 %
1050	13.0	25.3	14.5	25.5

(c) Thermal treatments summarised in Table 1d and 1e

	Cab70		LacBen
T (^∘C)	Δ𝑚 %	Δ𝑑 %	Δ𝑚 %	Δ𝑑 %
1050 (see Table 3d)	12.9	25.7
1100 (see Table 3e)	partial melting		14.3	24.7

(d) Thermal treatments summarised in Table 1f and 1g (h = 3 cm)

	Cab70		LacBen
T (^∘C)	Δ𝑚 %	Δ𝑑 %	Δ𝑚 %	Δ𝑑 %
1050 (see Table 3f)	13.0	17.5
1100 (see Table 3g)			14.6	19.2

(e) Thermal treatments summarised in Table 1h, 1i, 1l and 1m

	Cab70		LacBen
T (^∘C)	Δ𝑚 %	Δ𝑑 %	Δ𝑚 %	Δ𝑑 %
1050 (see Table 3h)	4.9	16.2
1100 (see Table 3i)			2.3	16.9
1050 (see Table 3l)	9.0	16.7
1100 (see Table 3m)			6.0	17.4