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

Table 7

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

Mix ID	Unattacked specimens	28 days	56 days	90 days
OPC	40	37.18	31.11	40
GC1	40.62	38.18	31.64	40.62
GC2	42.52	40.96	34.13	42.52
GC3	41.09	39.11	32.98	41.09