DOT Highway & Roadway Soil Capping Matrix
in Quebec

Severe freeze-thaw cycles will destroy sensitive marine clays. You must spray deep-rooting vegetation to hold the surface. Control the moisture and lay heavy geosynthetic reinforcement to stabilize the subsoil and stop differential settlement and shear failure in Champlain Sea clay deposits.

Operational Constraints for DOT Highway Expansion

Highway expansions and road widenings expose massive, continuous steep slopes directly adjacent to active traffic. The constant wind shear from passing heavy commercial vehicles and earth-moving equipment vibration degrade weak agricultural tackifiers long before vegetation can establish. Furthermore, contractors must apply the matrix across extended linear distances, requiring a slurry that sprays efficiently from the cannon without cavitating the hydroseeder pump. You need an engineered binder that provides extreme shear resistance to protect the embankment, prevent subgrade failure, and keep the roadway clear of sediment runoff.

Meeting MTMD CCDG (Cahier des charges et devis généraux) Standards Specifications

OHRA ViscoLok anchors seed and mulch directly to the subsoil, providing the rain-fast shear strength required by MTMD CCDG (Cahier des charges et devis généraux) Standards. Its microplastic-free botanical hydrocolloid network forms a 3D matrix. It resists high-velocity storm runoff and keeps synthetic toxins out of the watershed.

The matrix prevents "fisheye" lumping inside your hydroseeder pump. This stops pump cavitation and reduces friction head loss. You maximize your tank's spray payload and eliminate constant agitation adjustments on the job site.