A project with the🇨🇭Swiss Railways🚉: Medusoil’s biominerals to mitigate continuous sandstone erosion

Biomineralization project near Swiss Railways platform

Medusoil applied its flagship biomineralization product on a slope adjacent to a train platform of the Swiss Railways in the canton of Fribourg. The goal was to naturally increase the calcification content via a combination of minimally invasive injections and spraying techniques to ultimately mitigate the continuous erosion of the slope.

Eroded sandstone slope prior to stabilization
View of the eroded sandstone slope, prior to stabilization works

Application in two steps:

(i) Injection via 17 mm-diameter drills (opened with light, handheld equipment) to saturate the mass and identify potential fissures.

(ii) Surface percolation over an area of 45 m² for additional mineralization.

Works concluded within a week. A year after the application, calcification is omnipresent on the slope. Pocket penetrometer measurements indicate the residual cohesion as follows:

Cohesion assessment chart
Pocket penetrometer assessment of cohesion for various slope zones
Zone Cohesion (kPa)
Fully eroded sand 5–9
Weakly cemented zone < 20
Bio-cemented zones > 70
Stabilized sandstone slope after biomineralization

During design and monitoring, Medusoil deployed an advanced GIS system combined with LiDAR to detect movements and soil mass loss over time. This approach offers a fast, cost-effective way to track the evolution of the digital terrain model down to the millimeter scale.

For more information:

Send us an inquiry for your projects and ask for a quotation at:

Nicolas Hermant

Technical Sales Executive

nicolas@medusoil.com
076 844 17 41

For more information :

Sent us an inquiry for your projects and ask for a quotation at :

Nicolas Hermant

Technical Sales Executive

nicolas@medusoil.com

076 844 17 41

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