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

Table 8

Value of 𝑎,𝑏,𝑐,𝑅², SSE, RM, and M.

	a	b	c	𝑅^2	RMSE	SSE	MAPE
A-E-C	14.979	−24.359	10.365	0.934	2.896	14.480	1.885%
Plain concrete with 0.55	6.013	−8.885	3.878	0.992	0.014	0.0007	−0.002%
Plain concrete with 0.50	0.049	0.727	0.212	0.922	0.037	0.005	−0.256%
Plain concrete with 0.45	3.459	−4.626	2.178	0.983	0.018	0.001	−0.046%