Effect of Concentration of Sodium Hydroxide and Degree of Heat Curing on Fly Ash-Based Geopolymer Mortar

Table 2

Effect of concentration of sodium hydroxide on dry mass density and alkalinity for solution-to-fly ash ratio of 0.35.

Mix number	1	2	3	4	5	6
Concentration of NaOH, (M)	2.91	5.61	8.10	11.01	13.11	15.08
Mass density, (kg/m^3)	2180.85	2215.67	2157.65	2181.7	2168.97	2167.56
Alkalinity, pH	9.10	9.28	9.52	9.90	9.92	10.60