Investigation of Microstructural Damage in Ultrahigh-Performance Concrete under Freezing-Thawing Action

Figure 11

Defects volume distributions of UHPC specimens before and after freezing-thawing tests: (a) plain UHPC, (b) UHPC-1%, (c) UHPC-2%, and (d) UHPC-3%.

(a)

(b)

(c)

(d)