Mechanical properties and fracture surface roughness of thermally damaged granite under dynamic splitting

Highlights

• The effects of thermal damage and the loading rate on dynamic splitting mechanical properties and fracture surface morphological characteristics of granite were determined.

• The surface roughness index Z₂ in the axial and radial directions of the Brazilian splitting sample was calculated.

• Prediction models of dynamic splitting parameters based on Z₂2^r are proposed.

Keywords

dynamic splitting / fracture surface roughness / granite / strain rate / thermal treatment

RIGHTS & PERMISSIONS

2023 2023 The Authors. Deep Underground Science and Engineering published by John Wiley & Sons Australia, Ltd on behalf of China University of Mining and Technology.