Behavior of Structural Lightweight Polystyrene Foam Concrete Flat Slabs When Exposed to Fire

Table 4: Comparison of the deflections of the lightweight polystyrene foam concrete and normal-weight concrete during the firing process.

Condition	Type of Load	RFT%	Specimen	Δ₁	%	Δ₂	%	Δ_r	%
Fire	Concentric	High%	S3 (NFCH)	8.1	3.7	3.2	- 50	4.9	38.7
	Concentric	High%	S8 (LFCH)	8.4	3.7	1.6	- 50	6.8	38.7
	Eccentric	High%	S4 (NFEH)	9.9	7.1	1.6	143	8.3	-19.3
	Eccentric	High%	S9 (LFEH)	10.6	7.1	3.9	143	6.7	-19.3