Propex Operating Company, LLC

- Anchored Reinforced Vegetation System



ArmorMax Anchored Reinforced Vegetation System is the most advanced flexible armoring technology available for severe erosion challenges. Consisting of our woven three-dimensional High Performance Turf Reinforcement Mat (HPTRM) with X3® fiber technology and earth percussion anchors, you can count on the ArmorMax system to hold its ground.


Engineered to provide long-term design life, the ArmorMax system consists of a lightweight HPTRM layer and earth percussion anchors that work together to lock soil in place to resist movement for permanent erosion protection for vegetated or unvegetated applications. The system supports the EPA’s Green Infrastructure initiative and is a recognized storm water Best Management Practice (BMP) and is proven to reduce erosion and reinforce vegetation for low-impact, sustainable design.

The ArmorMax anchored reinforced vegetation system is used for Non-Structural applications such as levee armoring, protection of stream, river and canal banks and in arid/semi-arid storm water channels. The lightweight protection layer (HPTRM) is securely anchored to the subgrade typically with Type B1 (Type 2) earth percussion anchors which act as a tie-down mechanism for additional factors of safety and long-term design life.


Levee Amoring

  • Protect earthen levees from catastrophic erosion forces including storm surge, wave impact, overtopping and scour
  • With rapid vegetative growth, it provides immediate armoring protection to the levee soil surface
  • Lightweight protection system causes no additional surcharge loading which minimizes settlement/subsidence of poor soils
  • Minimizes need for future soil lifts to maintain levee elevation
  • Allows for enlargement of levees for controlled overtopping to reinforce levee soils minimizing erosion and potential failure


Stream, river and canal banks

  • Used to protect banks from erosion and scour
  • Withstands hydraulic stresses including moderate to high water flows and wave impacts resisting uplift keeping soil intact
  • Withstands non-hydraulic stresses such as debris flow, loading of tractors for maintenance operations and connections to hard structures


Arid / semi-arid channels & slopes

  • Used in environments where vegetation densities of less than 30% coverage are anticipated for permanent erosion protection
  • HPTRM protection layer meets most stringent UV stability of 90% at 6000 hours (ASTM D-4355)
  • Earth percussion anchors used in lieu of pins and staples to resist corrosion, particularly at the soil/air interface, and securely anchor the HPTRM to the subgrade maintaining the integrity and long-term design life of the system

ArmorMax is used for Structural Applications to provide surficial slope stabilization to resist shallow plane instability.   A shallow plane failure occurs when sloughing of near-surface soils descend down moderate to steep slopes. ArmorMax is an engineered solution that provides a higher factor of safety, erosion protection and superior surficial strength.

  • The system is comprised of a High Performance Turf Reinforcement Mat (HPTRM) and Type B2 or B3 earth percussion anchors as specified by the project engineer
  • HPTRM provides erosion protection and surficial strength allowing rapid vegetation growth keeping soil in place to resist movement
  • Earth percussion anchors installed below the failure plane secure the HPTRM to the subgrade and tie soil mass together to provide stability
  • An easy-to-install, more cost-effective alternative to rock slope protection and soil nailing with shotcrete
  • Engineered vegetated solution that is more environmentally friendly and aesthetically pleasing

The figures below illustrate the use of ArmorMax in a structural application for surficial slope stabilization.

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