Mass loss of geopolymer concrete specimens exposed to sulfuric acid (note: G100%SF0%, mix proportions: 408 kg fly ash, 1347 kg coarse grains, 546.47 kg fine grains, 6.2 kg super lubricant, and 163.2 kg alkyl solution; G90%SF0%, mix proportions: 40.8 kg cement, 367.2 kg fly ash, 19.67 kg retail tires, 1347 kg coarse grains, 507.38 kg fine grains, 6.2 kg super lubricant, and 163.2 kg alkyl solution; G80%SF0%, mix proportions: 81.6 kg cement, 326.4 kg fly ash, 19.67 kg retail tires, 1347 kg coarse grains, 522.93 kg fine grains, 6.2 kg super lubricant, and 163.2 kg alkyl solution). Reproduced with permission from [66], [Construction and Building Materials]; published by [Elsevier], [2021].