2.4. Determination of flexural properties
The flexural modulus and strength of the specimens conditioned
at 20 C and 65% RH were performed according to EN 310
[14]. A total of ten replicate specimens with dimensions of
250 mm 50 mm 10 mmwere tested for each type of composite
board. The flexural tests were conducted in accordance with the
third point loading method at a span-to-depth ratio of 20:1. The
crosshead speed was adjusted so that the failure would occur within
an average of 60 s ± 10. The specimens were tested on Instron
testing machine equipped with a load cell with a capacity of 10 kN.