Prediction of Compressive Strength of Geopolymer Concrete Based on Support Vector Machine and Modified Cuckoo Algorithm

Table 6

Comparison of 7d compressive strength for different oxide proportions.

Serial number	Oxide content(%)		Measured compressive strength value (MPa)	Traditional CSA predicted value (MPa)	Improved CSA predicted value (MPa)
1	SiO2	80.43	7	6.33	6.72
	Al2O3	14
	Fe2O3	3.57
	CaO	0.04
2	SiO2	36.02	17	18.78	16.10
	Al2O3	20.58
	Fe2O3	15.91
	CaO	18.75
3	SiO2	43.7	52	57.30	54.00
	Al2O3	21
	Fe2O3	22.5
	CaO	4.85
4	SiO2	48.21	11.2	9.92	10.52
	Al2O3	25.01
	Fe2O3	1.3
	CaO	15.2
5	SiO2	56.01	43.26	39.56	44.79
	Al2O3	29.8
	Fe2O3	3.58
	CaO	2.36
6	SiO2	50.5	66	60.44	68.85
	Al2O3	26.57
	Fe2O3	13.77
	CaO	2.13