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Fracture behavior of thermally treated layered sandstone with a bedding-parallel crack under different loading modes
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DOI：10.1016/j.jrmge.2026.05.041.png)
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Abstract
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• Brazilian tests were conducted on layered sandstone with a bedding-parallel crack after thermal treatment. • Fracture failure mode and AE characteristics of layered sandstone after thermal treatment were investigated. • Effects of high temperature on fracture characteristics of layered sandstone were analyzed. • The crack types of layered sandstone after heat treatment were identified based on RA-AF distribution. • An optimal fracture criterion for predicting fracture toughness of layered sandstone after thermal treatment was discussed.
Keywords:
High temperature
Cracked straight-through Brazilian disc (CSTBD)
Layered red sandstone
Acoustic emission (AE) characteristics
Fracture behavior
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