Table 10. Comparison of data variation

Research result conducted by This research Hoque et al. (2019) Cui et al. (2024) Meng et al. (2023) Liu et al. (2021)
Tensile σ ultimate (MPa) Number of sample without node 5 3 320 6 147
CoV internode 30.58% 10.38% 24.50% 5.42% 6.30%
Number of sample with node 5 3 - 6 167
CoV node 26.08% 9.05% - 9.36% 8.80%
Tensile modulus of elasticity ET (MPa) Number of sample without node 5 3 320 - -
CoV internode 13.21% 4.12% 15.40% - -
Number of sample with node 5 3 - - -
CoV node 25.41% 14.08% - - -
Compressive σ ultimate (MPa) Number of sample without node 3 4 - 12 231
CoV internode 6.76% 9.47% - 7.05% 8.20%
Number of sample with node 2 4 - 12 74
CoV node 0.81% 25.76% - 9.16% 6.90%
Compressive modulus of elasticity EC (MPa) Number of sample without node 3 4 - - 231
CoV internode 20.25% 40.03% - - 8.70%
Number of sample with node 2 4 - - 74
CoV node 11.25% 52.67% - - 8.00%
CoV: coefficient of variation.