Table 9.

Forest plot of the main discoveries on geopolymer concrete’s resistance to sulfuric acid, with reference to Table 7 and Table 8.

Published Work	Compressive Strength of Geopolymer Concrete without Acid Exposure (MPa)	Compressive Strength of Geopolymer Concrete with Acid Exposure (MPa)	Compressive Strength Reduction (%)
Abhilash et al. [67]	35.87	33.82	5.72
Valencia-Saavedra et al. [68]	42.92	34.34	20
Çevik et al. [69]	48.4	39.2	19
Average			14.91