Study on Mechanical Properties of Basalt Fiber-Reinforced Concrete with High Content of Stone Powder at High Temperatures

Figure 15

Acoustic response signals and processing results at different temperatures (without fiber): (a) at 25°C; (b) at 200°C; (c) at 400°C; (d) at 600°C.

(a)

(b)

(c)

(d)