Physicochemical Characterization of Geopolymer Binders and Foams Made from Tunisian Clay

Table 2

Preview of the experimental runs.

Mix	Factors		Clay (g)	Activators (g)		Solvent (distilled water) (g)
	Heated temperature (°C)	NaOH concentration (mol/l)		Na2SiO3	NaOH
M1	950	8	10	0.06	0.96	4
M2	950	13	10	0.06	1.56	4
M3	950	15	10	0.06	1.18	4
M4	950	18	10	0.06	2.16	4
M5	950	8	9.2	0.06	0.96	4

Eight percent of the clay was replaced by silica fume supplied from Sika (95.0 wt.% silica and 1.3 wt.% carbon, S_BET = 23 m²/g).