Mechanical Properties of High-Strength High-Performance Reinforced Concrete Shaft Lining Structures in Deep Freezing Wells

Table 6

Standard value of axial concrete compressive strength (MPa) [25].

Strength grade	C15	C20	C25	C30	C35	C40	C45	C50	C55	C60	C65	C70	C75	C80
	10.0	13.4	16.7	20.1	23.4	26.8	29.6	32.4	35.5	38.5	41.5	44.5	47.4	50.2