Study on Preparation of Coal Gangue-Based Geopolymer Concrete and Mechanical Properties

Table 9

Compressive strength and flexural strength of each specimen cured at 60°C for 28 days.

Numbers	G1	G2	G3	G4	G5	G6	G7	C
Compressive strength (MPa)	80.8	74.6	62.1	57.2	95.6	59.1	50.5	40.9
Flexural strength (MPa)	5.06	4.86	4.73	4.52	6.24	5.90	3.81	3.39