Research on Basic Mechanical Properties and Fracture Damage of Coal Gangue Concrete Subjected to Freeze-Thaw Cycles

Table 1

Properties of P·O 42.5 cement.

Test items	Soundness	Water requirement of normal consistency (%)	Setting time (min)		Compressive strength (MPa)		Flexural strength (MPa)
			Initial setting	Final setting	3 d	28 d	3 d	28 d
Test result	Qualified	26.7	165	220	25.8	48.5	5.3	8.2