<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The present paper focuses on the shear strength exhibited by rocks and soils when sliding along dry and wet surfaces, with this mechanism of failure being strongly related to the water lubrication phenomenon. It is well known that the frictional behaviour of geomaterials requires multiscale investigation. Under this perspective, experimental evidence of both friction at the grain scale (i.e. interparticle friction) and friction along sliding surfaces of rock and granular soil samples (i.e. surface friction) are analysed by using data from the literature. The review is addressed at linking different scales, stating the differences between rocks and soils in terms of frictional response to sliding and trying to point out still open problems for the research.</p>
</abstract>

The present paper focuses on the shear strength exhibited by rocks and soils when sliding along dry and wet surfaces, with this mechanism of failure being strongly related to the water lubrication phenomenon. It is well known that the frictional behaviour of geomaterials requires multiscale investigation. Under this perspective, experimental evidence of both friction at the grain scale (i.e. interparticle friction) and friction along sliding surfaces of rock and granular soil samples (i.e. surface friction) are analysed by using data from the literature. The review is addressed at linking different scales, stating the differences between rocks and soils in terms of frictional response to sliding and trying to point out still open problems for the research.

Does water lubrication affect friction differently for rocks and soils? Evidence and open questions

Studia Geotechnica et Mechanica

This work is licensed under the Creative Commons Attribution 4.0 International License.

The present paper focuses on the shear strength exhibited by rocks and soils when sliding along dry and wet surfaces, with this mechanism of failure being...

Does water lubrication affect friction differently for rocks and soils? Evidence and open questions

Article Category: Original Study

Published Online: Jul 27, 2022

Page range: 211 - 223

Received: Sep 04, 2021

Accepted: May 24, 2022

DOI: https://doi.org/10.2478/sgem-2022-0014

Keywords
Water lubrication, friction scale, fractures, sliding, roughness

© 2022 Cafaro F. et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Does water lubrication affect friction differently for rocks and soils? Evidence and open questions

Article Category: Original Study

Published Online: Jul 27, 2022

Page range: 211 - 223

Received: Sep 04, 2021

Accepted: May 24, 2022

DOI: https://doi.org/10.2478/sgem-2022-0014

KeywordsWater lubrication, friction scale, fractures, sliding, roughness

© 2022 Cafaro F. et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Water lubrication, friction scale, fractures, sliding, roughness