Research Article

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

Table 6

Reduced percentage of ultrasonic velocity of plain concrete subjected to F-T cycles.

W/CNumber of F-T cycles
0255075100

0.4510092.8686.1969.6430.80
0.5010085.2367.5359.43ā€”
0.5510092.0885.4572.6961.65