Evaluation of Freeze-Thaw Durability of Silica Fume Concrete with Spraying Inorganic Coating Using Ultrasonic Testing

Figure 5

Variation characteristic of ultrasonic shear pulse velocity and its decay rate of three kinds of concrete over 300 FT cycles. (a) Variation characteristic of ultrasonic shear pulse velocity; (b) decay rate of ultrasonic shear pulse velocity.

(a)

(b)