Underlay options for Concrete Mats

Australian Concrete Mats are supplied with various backing materials. Choose which is suitable for your project.

Geotextile Underlay Material Options

Flexible Concrete Erosion Mats are supplied with your choice of underlay geotextile. Choose which is most suitable for your projects and site conditions.


Biodegradable Nutrition mat will promote and support vegetation growth under the concrete mat.


Non Woven Geotextile underlay helps prevent scouring under the concrete mats


Biodegradable Nutrition Geomat underlay will promote and support vegetation growth under the concrete mat.

Biodegradable Nutrition Geomat Underlay Properties

  • Nutrition geomat has been recently developed by Geosynthetics Australia
  • Biodegradable – breaks down into soil offering up to 6 months of nutrition and fertilisation to the soil
  • Made from high strength polypropylene fibres
  • Soft needle punched with wool and plant fibres
  • Has high tear resistance
  • Features excellent drainage
  • Provides ideal media for seed germination
  • Protects the soil while encouraging strong and healthy vegetation
  • When laid over prepared soils and secured under the concrete mat the geotextile binds with the soil to prevent erosion
  • The Concrete Shapes also helps maintain moisture in soils
  • Small openings promote seed germination while the wool and plant fibres reduce moisture loss from soil and fertilise growing vegetation
  • Also inhibits weed growth during revegetation
  • Wool helps aerate the substrate and retains water
  • Reduces frequency of watering and optimises root growth
  • As the wool decomposes it slowly releases valuable plant nutrients into the soil –
    • Nitrogen-9%,
    • Phosphorous-1% and
    • Potasium-2% as well as
    • Calcium, Magnesium, Iron, Sulphur
  • The result is strong, healthy vegetation without the need for additional fertilisation for up to 6 months
Nutri Geomat biodegradable erosion control geotextile

Advantages of Biodegradable Nutrition GeoMat

  • Easy to seed;
  • Less water is required to achieve a high germination percentage and high survival rate;
  • Inhibits weeds during early plant growth;
  • Vegetation is strong and healthy;
  • Max water flow rate is 4m/s. before Australian Concrete Mat is attached above it.

Applications and projects that Nutrition Geomat Underlay are used:

  • Used to protect soils in area exposed to wind or high rainfall
  • Used for stabilisation
  • Embankments and slope protection
  • Mine rehabilitation
  • Tailing ponds
  • Landfills and bunds
  • Anywhere that there is needs to establish vegetation
  • Ideal biodegradable alternative to jute and coir matting


Non Woven assists to prevent scouring

Features of Non Woven Geotextile

Effective and economical solution for;

    • Continuous filament structure permits water to pass through while preventing soil migration
    • Suitable for separating 2 layers of soil with different physical properties reduces the amount of fill required and increase lifespan of structures
    • Improve drainage ideal for draining or venting soils
    • Needle free are ideal for protecting liners from punctures and excessive deformation cushioning relieves stress and minimises chance of contained harmful liquids leaking
    • Strength of nonwoven continuous fibre geotextiles can improve the load bearing capacity of a soil’s structure, such as the reinforcement of a retaining wall
High strength nonwoven geotextile 

Nonwoven GeoTextile Underlay Properties

  • Nonwoven continuous filament geotextile
  • 100% polyester fibres
  • Mechanically bonded by needle punching
  • Strong resistance to acid environments (pH<3.5)
  • Deliver high flow through rates and excellent drainage performance
  • Accommodates soil irregularities
  • More resistant to puncture damage from stones embedded in ground
  • Often used to cushion geomembranes
  • Abrasion resistance especially ideal under concrete erosion mats
  • Continuous filament structure permits water to pass through while preventing soil migration
  • Feature high UV resistance

Non Woven Geotextile features

Nonwoven staple fibre geotextiles can withstand harsh installation conditions and high construction loads. Needle punched nonwovens combine flexibility and high elongation with high puncture resistance. They offer superior filtration (AOS<0.075mm) and prevent the ingress of fines into drainage media. Because staple fibre geotextiles achieve higher interface friction angles than similar weight nonwovens manufactured using other processes, they are beneficial for constructing a stable layer over soft foundation soils.

Staple Fibre Applications

  • Separation
  • Drainage
  • Filtration
  • Geomembrane Protection
  • Environmental Protection
  • Reinforcement

Nonwoven staple fibre needle punched geotextiles offer a cost effective alternative for separation, filtration and protection applications.

They are also chemically resistant to naturally occurring soil environments and polypropylene nonwoven geotextiles have a strong resistance to acid environments (pH<3.5). Nonwoven geotextiles deliver high flow-through rates and excellent drainage performance. They accommodate soil irregularities, are more resistant to puncture damage from stones or other objects embedded in the ground and often used to cushion geomembranes. The abrasion resistance of staple fibre geotextiles is particularly beneficial when only gravel fills are available and under the concrete erosion mat.

Permanent erosion protection and prevention

Australian Concrete Mats