Experimental Study on Flexural Behaviour of Lightweight Multi-Ribbed Composite Slabs

Table 1

Characteristics of all specimens.

ID	Self-weight (%)			Number of L^a ribs	Number of T^b ribs	h1 (mm)	Reduction in weight compared with solid R. C%
	Precast	AAC	In situ
S1	41.5	22.2	36.3	4	7	40	17.0
S2	37.8	29.6	32.6	3	7	40	22.6
S3	36	33.2	30.8	3	0	40	25.4
S4	31.9	41.4	26.7	3	7	0	31.6
S6	0	0	100	0	0	—	0

Note. AAC: autoclaved aerated concrete blocks; L^a: longitudinal; T^b: transverse; h₁: the top concrete thickness.