Barely Significant

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Finally, in Stage IV (0.82 < χ ̄ < 0.98), which is, also, of very small duration (equal to about 0.7 s), the load exhibits a decreasing trend, while the average rate m of the change in CC*(χ) increases abruptly towards its global maximum which, for the specific experiment, is equal to about m ≈ 2.6, attained at the instant of fracture.
According to Table 3 and Table 6 , with the increase in TM addition, the mechanical properties of Cr 0.47 Al 0.5 TM 0.03 N such as bulk modulus, shear modulus, Young’s modulus, and theoretical hardness exhibit a decreasing trend, while an increase in Cauchy pressure and Pugh’s index of ductility indicates an increased toughness and a tendency toward the mobile character of the bonds, which results in a decreased resistance against shearing.
When the strength of the rock block is much higher than that of the matrix, and the block proportion is less than 70%, the uniaxial compressive strength of the sample shows an increasing trend with the increase in the block proportion [ 25 , 26 , 27 ], but when the block proportion exceeds 70%, the uniaxial compressive strength of the sample shows a decreasing trend [ 22 ].