The Comprehensive Assessment Method of Concrete Damage after Disastrous Fire Based on Game Theory-Normal Cloud Model

Table 5

Grading and valuing standards of assessment index .

Grades	Value	Damage state
I	0.0~0.1	Loud sound, hammer leaves no trace on the surface.
II	0.1~0.25	Loud sound, hammer leaves obvious traces on the surface.
III	0.25~0.5	Dull sound, the concrete is smashed, and traces are left on the surface.
IV	0.5~0.8	Dull sound, the concrete is smashed and dented.
V	0.8~1.0	The sound is weak; the concrete exfoliates significantly.