Transchaco Highway — lot 5

PY09 Highway, Chaco · approximate location

450,000 m²of protected slopes

Product: Hydraulic blanket on slopes; blanket + turf reinforcement mat at 5 culverts (8,300 m²)
Soil: Dispersive and expansive, few nutrients, little rain
Second stage: 100,000 m² of hydroseeding in 20 days on the untreated sections
Sector: Road infrastructure

The problem

Chaco soil is dispersive: it dissolves in water. Culvert outlets and channels down to the watercourse were scouring, and the lot's slopes eroded before anything could grow.

The solution

Four hundred and fifty thousand square metres of slopes with hydraulic blanket, and an integral system at five culverts: blanket plus turf reinforcement mat from the culvert edge to the watercourse. Then 100,000 m² of hydroseeding with mulch, pH corrector, nutrients and micro-organisms in 20 days on the sections left untreated.

The result

Slopes, ditches and outlets working as one system in the country's most difficult soil.

Before and after