High-Temperature Performance and Multiscale Damage Mechanisms of Hollow Cellulose Fiber-Reinforced Concrete

Figure 13

SEM images of microstructure of CFRC exposed at 1050°C for 4 h at (a) 500x, (b) 500x, (c) 5000x, and (d) 20 000x magnification.

(a)

(b)

(c)

(d)