ABSTRACT
Bearing in mind that surface erosion is one of the most recurrent pathologies in geotechnical structures, and its occurrence has become more and more common with greater structural consequences due to climate change, Ascendi has worked to find more sustainable and innovative solutions to prevent and resolve this type of pathology using bioengineering methodologies. The solution presented, in this case study, is limited to the projection of a mixture with a specific formulation, with species of reticulated root, appropriate to the active and adjusted to the geographical location, not requiring the previous existence or application of a layer of vegetable soil. The embankment slope under analysis, located at PK 201+000 of the A13 was presumably composed by silty sand intercalations of black schist (slate) and quartz-feldespar brown schist soils from excavations carried out near the site, very susceptible to erosion, and difficult to stabilize with the application of hydroseeder with vegetable soil. The traditional solution for this pathology would resort to filling the eroded strata with rock material. This new approach reduces the consumption of materials, water and fuels, preserving existing ecosystems and favoring biodiversity through the application of native species. The creation of a uniform vegetation cover on the slope face and the establishment of the reticulated roots allow a stabilization of the slope and increased resilience to Natural Hazard.
