DuraGrid – Polypropylene Biaxial Geogrid

DuraGrid polypropylene biaxial geogrids are used in base course reinforcement and subgrade stabilisation applications such as road pavements, reinforced foundations and working platforms on soft soils.

DuraGrid polypropylene geogrids are well suited to applications that are subject to the impact loads caused by traffic, earthquakes, etc.

The excellent interlocking properties and strength of DuraGrid ensure its usefulness in reducing layer thicknesses and increasing bearing capacity and pavement life.

DuraGrid is typically laid directly on the subgrade, and the aggregate layers are placed and compacted on top. Aggregates, which are strong in compression and weak in tension, are therefore mechanically stabilised by the high-efficiency interlock and tensile strength of the DuraGrid reinforcement layer. In applications where the underlying soils are saturated, it is recommended that a DuraForce nonwoven geotextile is placed under the DuraGrid or the GridTex geocomposite is used. This is to ensure there is separation to prevent the fine particles migrating into the aggregate layer.

For applications where radial strength or very low elongation is required, see our range of SecuGrid® geogrids. We also offer CombiGrid® which is a composite product of a SecuGrid, combining a nonwoven geotextile, firmly welded between the reinforcement bars.

SecuGrid® and CombiGrid® are registered trademarks of Naue Gmbh & Co. Kg registered in Germany.

Benefits & Features

  • Suitable for reducing aggregate thickness required in pavement applications
  • Good aggregate interlock
  • Can be used with a range of aggregate sizes
  • Manufactured by ISO quality accredited company
  • Popular for slip protection on timber boardwalks

SPECIFICATIONS

Code
Grade
Roll Size
Area

76253

DuraGrid 20/20

3.95m x 50m

197.50m²

13643

DuraGrid 20/20

5.95m x 50m

297.50m²

76254

DuraGrid 30/30

3.95m x 50m

197.50m²

13639

DuraGrid 30/30

5.95m x 50m

297.50m²

76255

DuraGrid 40/40

3.95m x 50m

197.50m²

FAQs

What is DuraGrid?

What are the common uses for DuraGrid?

How does it work?

What is the difference between StrataGrid®* and DuraGrid?

What is the difference between SecuGrid and DuraGrid?

How much should you overlap DuraGrid at joins?

Related Products

DuraForce™ AS Series Nonwoven Geotextile

DuraForce AS series geotextiles are manufactured and tested to exact quality standards and rated according to the NZTA F/7 specification for geotextiles. Available in a range of grades depending on the particular engineering application required.

SecuGrid® Multi-Directional Geogrid

SecuGrid is designed to interlock with the aggregate placed above it to provide stabilisation and bearing capacity improvement to soft subgrades and also reduce rutting in a pavement application.

CombiGrid® Multi-Directional Geogrid Geotextile Composite

CombiGrid combines all the functions of a geogrid and geotextile in one single product and is ideal for reducing aggregate depth requirements and providing a stable platform on soft ground.

GridTex – Geogrid/Geotextile Geocomposite

GridTex is a combination of DuraGrid polypropylene geogrid for stabilisation and reinforcement, combined with a 200gsm nonwoven geotextile for separation and filtration.

Related Case Studies

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Queenstown Airport Infrastructure Improvements – DuraFlow

24 Jun 2016

Queenstown, one of the fastest growing regions in New Zealand, and always a top destination for our ever-increasing tourism market, has just set the benchmark for seamless infrastructure improvements at the International Airport. Cirtex® was pleased to be involved in the project.

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Montreal Business Park – SecuGrid®

10 Feb 2016

The engineer selected SecuGrid® 40/40 due to its high modulus and low elongation. SecuGrid 40/40 was placed in 4 layers through a 1.2m deep aggregate foundation and allowed compaction of the first layers of aggregate even though the subgrade was incredibly soft. It also prevents lateral spread of aggregate raft foundation in a seismic event.

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Plunket Ave Enabling Works – DuraForce™ & SecuGrid®

10 Feb 2016

During the development of the Plunket Avenue Manukau site into an industrial park, the developers faced the challenge of very soft subgrades, large industrial buildings and tight timeframes.

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