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The final fractural forms and variation status of hard inclusion samples under biaxial compression have been primarily studied in this paper. The lateral fractural forms of samples are mainly compressive-shear fracture, two kinds appear on surface: one is strike-slip fault with reversed thrust, and another is thrust. Some hard inclusions rupture and some do not while hard contact serves between hard...
Under biaxial pressure, the microcrack patterns of concrete samples with hard inclusion are as followings: Microcracks generate around the sample at the early pressured period, and gap is formed in the middle part with the increase of σ1; microcrack gap is becoming smaller gradually with σ1 increase again; microcracks become active within the original gap, but they in an original active area become...
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