Durability Studies on Fly Ash Based Geopolymer Concrete Incorporated with Slag and Alkali Solutions

Table 5

Compressive strength values of the geopolymer and OPC concrete mixes after the acid test for different curing periods.

Mix ID	Unattacked specimens	28 days	56 days	90 days
OPC	38.95	37.44	33.71	27.87
GC1	39.37	38.00	34.36	28.89
GC2	43.28	40.96	36.53	31.40
GC3	40.35	38.47	34.80	29.69