Study on Strength and Ultrasonic Velocity of Air-Entrained Concrete and Plain Concrete in Cold Environment

Table 3

Compressive strength of plain concrete after different cycles of F-T (MPa).

W/C	Number of F-T cycles	0	25	50	75
0.55	Cubic compressive strength	27.41	22.36	18.09	16.45
	Compressive strength	19.66	15.15	9.95	/
0.50	Cubic compressive strength	45.85	38.00	35.71	28.92
	Compressive strength	34.20	30.01	24.10	21.67
0.45	Cubic compressive strength	50.65	45.23	37.45	32.23
	Compressive strength	38.90	34.4	29.43	25.67