LIBAROT® project on a project site in the Paris region
Eiffage Route and BUILDERS Engineering School
The yard
The LIBAROT® project, launched in 2023 to develop a low-carbon road hydraulic binder based on shellfish co-products, reduces the carbon impact of road infrastructure. The experimental site at Monthyon (77) in March 2025, subsidized by the Île-de-France region, consists of a 200-metre long and 5-metre wide roadway. It allowed us to test this innovative binder in real-life situations and to compare it with a classic binder.
Using an innovative hydraulic binder
Patented in November 2024, the innovative hydraulic binder is made up of 80% co-products and recycled materials (including 40% crushed scallop shells) and has a carbon impact divided by four in relation to conventional portland cement.
It is used here as part of a zero-waste pavement reprocessing project marked by the reuse of the existing structure. A reprocessing in place and an example of upgrading made possible by the intervention of the ARC 600® Road Reprocessing Workshop in Eiffage Route.















