Research Article
Acoustic Emission and Ultrasonic Characteristics in the Failure Process of Cemented Waste Concrete-Coal Gangue Backfilling (CWCGB) under Uniaxial Loading
Figure 8
Characteristics of the external failure with 30% waste concrete substitution under uniaxial loading. (a–f) correspond to 0-σa,σa-σb, σb-σc, σb-σc, σc-σd, and σc-σd of the stress stage in Figure 6.
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