TechGrid M - Coated High Strength Polyester Geogrid
TechGrid M
TechGrid© M is a flexible soil reinforcement geogrid produced from high strength polyester yarns and coated with PVC or PVA according to the soil conditions in which it will be used.
TechGrid© M absorbs the tensile stresses that the soil cannot carry and allows the load to be distributed over a wide area. Its flexible structure enables it to conform to irregular surfaces and sloping embankments, which is why it is preferred in retaining structures, dykes and platform fills. The coating on the surface protects the yarns against mechanical damage during placement and compaction, as well as against chemical effects in the soil.
TechGrid M Functions
TechGrid© M forms a flexible reinforcement layer that transfers load between the subgrade and the fill material. Soils have adequate compressive strength but almost no tensile strength, which is why they spread laterally under load, resulting in settlement and failure. The geogrid absorbs the tensile stresses the soil cannot carry and distributes the load along its own plane over a wide area. Thanks to its flexible structure, it conforms to irregular surfaces and sloping embankments, which prevents voids from forming underneath during placement.
Stabilization
Fill placed over weak subgrade spreads laterally under traffic load, causing rutting and settlement. TechGrid© M limits this spreading by forming a reinforcement plane that transfers load between the fill and the subgrade, allowing the platform to retain its geometry over a long period.
Durability
The PVC or PVA coating on the surface protects the polyester yarns against mechanical damage during placement and compaction. The coating type is selected according to the chemical properties of the soil in which it will be used, allowing the product to retain its strength throughout the service life of the structure.
Reinforcement
Soils cannot carry tensile stress under load and lose bearing capacity by spreading laterally. Thanks to its high strength polyester yarns, TechGrid© M absorbs these stresses at low elongation levels and increases bearing capacity by distributing the load over a wide area.
Improved Soil Layers
Reinforced fill delivers the same performance with a thinner section. This reduces excavation depth and the volume of granular fill required, lowering material and haulage costs where weak subgrade would otherwise call for soil replacement.
Tensile Strength up to 1200 kN/m
TechGrid© M can be produced with tensile strength values up to 1200 kN/m according to project requirements. This range makes it possible to provide a solution with a single layer in high fill loads and steep reinforced soil structures, where multiple reinforcement layers would otherwise be required. The fact that this high strength is delivered at low elongation levels means the reinforcement engages before the fill deforms, keeping total settlement in the structure limited. The strength class needs to be selected according to the design load and the soil conditions.
TechGrid M Features
- High tensile strength, producible up to 1200 kN/m
- Long term performance due to low creep
- Delivers high strength at low elongation levels, so the reinforcement engages before the fill deforms
- Conforms to irregular surfaces and sloping embankments thanks to its flexible structure
- Increases bearing capacity by distributing load along its own plane over a wide area
- High resistance to chemicals and microorganisms in the soil
- The PVC or PVA coating protects the yarns against mechanical damage during placement and compaction
- The coating type can be selected according to the chemical properties of the soil in which it will be used
- Reduces excavation and material costs by decreasing granular fill thickness
- Can be produced in different strength classes according to project requirements
Frequently Asked Questions
1. What Is TechGrid M?
TechGrid© M is a flexible soil reinforcement geogrid produced from high strength polyester yarns and coated with PVC or PVA according to the soil conditions in which it will be used. It is used in retaining structures, dykes and platform fills.
2. In Which Strength Values Is TechGrid M Produced?
It can be produced with tensile strength values up to 1200 kN/m according to project requirements. You can consult our technical team to select the appropriate strength class based on the design load and soil conditions.
3. How Does TechGrid M Reinforce Soil?
Soils have adequate compressive strength but almost no tensile strength, and they spread laterally under load, resulting in settlement. TechGrid© M absorbs these tensile stresses and increases bearing capacity by distributing the load along its own plane over a wide area.
4. Why Is Creep Resistance Important?
Reinforcement elements tend to elongate over time under sustained load, which is known as creep. The low creep behaviour of TechGrid© M allows it to retain its strength throughout the service life of the structure, a critical requirement in retaining structures and high fills carrying permanent loads.
5. What Is the Purpose of the PVC or PVA Coating?
The coating protects the polyester yarns against mechanical damage during placement and compaction. It also forms a barrier against chemicals and microorganisms in the soil, and the coating type is selected according to the chemical properties of the soil in which it will be used.
6. Where Is TechGrid M Used?
It is used in reinforced soil retaining structures, dykes, road and railway platforms, high fills and foundation areas resting on weak subgrade. It is also preferred in steep reinforced soil slopes.
