From: Investigating Various Factors Affecting the Long-Term Compressive Strength of Heat-Cured Fly Ash Geopolymer Concrete and the Use of Orthogonal Experimental Design Method
Level
Variables
A (L/FA)
B (SHC) (mol)
C (SS/SH)
1
0.40
8
2.0
2
0.44
10
2.5
3
0.48
12
3.1
4
0.52
14
4.0