A semi-industrial experiment made in MATIN factory, Alexandria, 24 August, 1994.
Density 0.48 gm/cm3
Face strength 1.07 N/mm2
Modulus of rupture in bending 21.9 N/mm2
Internal bond 0.91 N/mm2
A research project conducted by the Faculty of Engineering, Ain Shams University in collaboration with the Academy of Science and Technology