Table 4.

Basic characteristics of PF and BPFs.

Foams	Apparent Density (kg·m−3)	Pulverization Ratio (%)	Compressive Strength (MPa)	Flexural Strength (MPa)
PF	49.2 ± 1.9	14.5 ± 0.4	0.19 ± 0.03	0.24 ± 0.03
10%BPF	53.2 ± 1.3	12.4 ± 0.2	0.21 ± 0.04	0.30 ± 0.04
20%BPF	58.1 ± 1.6	8.9 ± 0.2	0.28 ± 0.05	0.36 ± 0.02
30%BPF	45.6 ± 0.9	13.6 ± 0.3	0.16 ± 0.02	0.19 ± 0.02