Characteristic Investigations on Ethiopian Kaolinite: Effect of Calcination Temperature on Pozzolanic Activity and Specific Surface Area

Table 1

The specific surface area (SSA) of the kaolinite samples at various calcination temperature.

Calcination temperature (°C)	Vm (cm^3·g^−1)	BET constant	SSA (m^2g^−1)
Raw kaolinite	0.001	6.098	30.545
575	0.001	8.863	32.150
600	0.001	9.780	34.369
625	0.001	11.431	39.230
650	0.001	13.643	43.510
700	0.001	14.347	47.794
800	0.001	8.972	33.360
900	0.001	5.793	26.308
1000	0.001	5.650	17.807