Fig. 7

(a) The stress-strain curves with 3 mm pore size (0.5%~2.5% porosity). (b) The stress-strain curves with 4 mm pore size (0.5%~2.5% porosity).

(a) The stress-strain curves with 3 mm pore size (0.5%~2.5% porosity). (b) The stress-strain curves with 4 mm pore size (0.5%~2.5% porosity).