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April 10, 2026Rock Mechanics and Rock Engineering0 citationsOpen Access

Ultrahigh Tensile Strength of Rock

KHKimihiro HASHIBAIPIgnacio Perez-ReyMGM. A. González-Fernández

Key Points

  • This research aims to explore the tensile strength of rock using innovative specimen designs.
  • Utilized dog-bone-shaped specimens for testing tensile strength
  • Studied various types of rock, focusing on slate
  • Conducted direct tensile strength measurements
  • Achieved a tensile strength of about 70 MPa in slate rock
  • Strength measurement is more than twice the previous record
  • Set a new world record for tensile strength in rock

Abstract

We succeeded in obtaining previously unimaginable high tensile strengths of rock using dog-bone-shaped specimens. The studied slate showed a direct tensile strength of about 70 MPa. The direct tensile strength is more than twice the maximum reported in previous studies and sets a world record for rock.

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Cite This Study

HASHIBA et al. (2026) studied this question.

synapsesocial.com/papers/69d892886c1944d70ce03e19https://doi.org/10.1007/s00603-026-05484-1
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