Investigating Various Factors Affecting the Long-Term Compressive Strength of Heat-Cured Fly Ash Geopolymer Concrete and the Use of Orthogonal Experimental Design Method

International Journal of Concrete Structures and Materials

Table 7 Elements analysis of specimens in weight % and atom %.

Elements	M13 (spectrum 1)		M14 (spectrum 2)		M15 (spectrum 3)		M16 (spectrum 4)
Elements	Weight, %	Atom, %	Weight, %	Atom, %	Weight, %	Atom, %	Weight, %	Atom, %
O	47.24	57.96	51.15	60.55	45.7	58.73	42.43	56.92
Na	38.31	32.71	43.42	35.78	8.28	7.41	1.45	1.36
Al	1.39	1.01	0.73	0.51	11.06	8.43	20.45	16.27
Si	8.97	6.27	4.64	3.13	34.19	25.03	27.24	20.82
K	4.09	2.05	0.06	0.03	0.77	0.4	8.42	4.62
Total	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
Si/Al Ratio	6.45	6.21	6.36	6.14	3.09	2.97	1.33	1.28