Table 5 Two recommended mix proportions based on tripe-objective optimization.

From: Explainable automl and multi-objective optimization for sustainable high-performance geopolymer concrete

Variable

Ⅰ

Ⅱ

Fly ash (kg/m3)

270.67

294.43

Blast-furnace slag (kg/m3)

216.11

270.19

Sodium hydroxide (kg/m3)

0.71

0.00

Sodium silicate (kg/m3)

32.00

122.32

Water (kg/m3)

268.76

271.39

Fine aggregate (kg/m3)

1269.43

1196.36

Coarse aggregate (kg/m3)

18.45

0.00

Temperature (℃)

20.42

26.12

Relative humidity (%)

93.18

100.00

Compressive strength (MPa)

68.49

90.36

Cost ($/m3)

41.52

60.44

CO2 emission (kg/m3)

99.81

241.00

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