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Ultrahigh Tensile Strength of Rock | Synapse

April 10, 2026Open Access

Ultrahigh Tensile Strength of Rock

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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Authors

K

Kimihiro HASHIBA

I

Ignacio Perez-Rey

M

M. A. González-Fernández

Journals

Rock Mechanics and Rock Engineering

Actions

Institutions

The University of Tokyo

Universidade de Vigo

Centro de Estudios y Experimentación de Obras Públicas

References and Citations

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Cite this study

HASHIBA et al. (Mon,) studied this question.

www.synapsesocial.com/papers/69d892886c1944d70ce03e19 — DOI: https://doi.org/10.1007/s00603-026-05484-1