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

Table 7

Comparison of 28d compressive strength for different oxide proportion.

Serial number	Oxide content (%)		Measured compressive strength value (MPa)	Traditional CSA predicted value (MPa)	Improved CSA predicted value (MPa)
1	SiO2	80.43	20	22.02	19.51
	Al2O3	14
	Fe2O3	3.57
	CaO	0.04
2	SiO2	36.02	34	30.24	35.96
	Al2O3	20.58
	Fe2O3	15.91
	CaO	18.75
3	SiO2	43.7	65	59.30	61.89
	Al2O3	21
	Fe2O3	22.5
	CaO	4.85
4	SiO2	48.21	66.1	61.03	64.57
	Al2O3	25.01
	Fe2O3	1.3
	CaO	15.2
5	SiO2	56.01	48.2	44.58	46.50
	Al2O3	29.8
	Fe2O3	3.58
	CaO	2.36
6	SiO2	50.5	69	75.23	66.68
	Al2O3	26.57
	Fe2O3	13.77
	CaO	2.13