Durability Assessment of Lightweight Cellular Concrete in Subgrade by the Method of Analytic Hierarchy Process Combined with Fuzzy Comprehensive Evaluation

Table 2

Grade classification of influencing factors of construction technology.

Assessment grade	Production equipment	Agitation sufficient degree	Flow value (mm)	Single layer pouring thickness (m)	Single layer pouring time (min)	Interlayer pouring interval (time/hour)	Construction environment
Excellent	Excellent	Excellent	[170, 180]	[0.3, 0.5]	10 min before initial setting	[8, ∞)	Excellent
Good	Good	Good	(180, 200]	(0.5, 0.7]	5 min before initial setting	[7, 8)	Good
General	General	General	[160, 170)	(0.7, 0.8]	Initial setting time	[6, 7)	General
Poor	Poor	Poor	(0, 160)	(0.8, ∞)	Greater than the initial setting time	[0, 6)	Poor