13th International Conference on Fracture June 16–21, 2013, Beijing, China -7- Figure 6. Stress-strain curve of RAC with 100mm×100mm×100mm For the size 150mm×150mm×150mm of tension specimen, the numbers of coarse aggregate particles can be obtained according to Equation (20). By Monte Carlo method, random to create the centroid coordinates of all kinds of coarse aggregate particles, namely to generate random aggregate model as Figure 7: Specimen 1 Specimen 2 Specimen 3 Specimen 4 Figure 7. Random aggregate model with 150mm×150mm×150mm The uniaxial tensile stress -strain curve of recycled concrete is getting as shown in Figure 8. The tensile strengths of the four specimens were 2.51Mpa, 2.50MPa, 2.52MPa and 2.51MPa. The uniaxial tensile strength average of the specimen group is 2.51MPa. Figure 8. Stress-strain curve of RAC with 150mm×150mm×150mm For the size 300mm×300mm×300mm of tension specimen, the numbers of coarse aggregate particles can be obtained according to Equation (20). By Monte Carlo method, random to create the centroid coordinates of all kinds of coarse aggregate particles, namely to generate random aggregate model as Figure 9: -6 ε/10 Strain 0 0.5 1 1.5 2 2.5 3 0 20 40 60 80 100 120 140 160 specimen 1 specimen 2 specimen 4 specimen 3 Stress σ/MPa Stress σ/MPa 0 0.5 1 1.5 2 2.5 3 0 20 40 60 80 100 120 140 Specimen 1 Specimen 4 Specimen 2 Specimen 3 Strain ε/10-6
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