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FOURDIMENSIONSSecugrid®

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The four dimensions of length (the bar), width (the geogrid), depth (the soil) and the time (durabi-

lity) greatly influence construction project scope, design, product selection and expected service

life. Today, NAUE introduces you to a new four-dimensional way of understanding reinforcement

applications: the Four Dimensions of Secugrid®.


Whether your work is publiclyor privately financed, all part-ners in construction appreciatevalue: contractors, owners, citycouncils, etc. In the case ofmunicipal or other govern-ment-funded projects, econo-mic value may be the primarymeasure for being awarded thework even though performanceis the true goal.

NAUE Secugrid® provides ex-cellent value not only whenmeasured by the immediateand competitive acquisitioncosts, but when consideringthe numerous cost-savingsbrought about by the high-le-vel of engineering in the ma-terials. When it comes to ag-gregate usage in roads andland disturbance in the con-struction of mechanically sta-bilised earth (MSE) walls, lessreally can be more. Less ag-gregate equals more savings.Less site disturbance equalsmore usable land. Secugrid®makes this possible.

When installed in a roadwaybase course, NAUE Secugrid®vastly increases that basecourse strength, thus reducingthe need for as much gravel.This can equate to significantproject savings. Gravel is heavyand expensive to transport.Site preparation can be time-consuming too. Secugrid®reinforcement decreases the

dependency on base coursethickness because of the supe-rior stress/strain characteri-stics of its geogrid bars. Theelastic modulus of the basecourse is improved; loads arebetter distributed; aggregatedoes not migrate laterally or

mix vertically. The road doesnot break down from within(e.g., rutting and reflectivecracking). The installation ofSecugrid® today means less

gravel today and reduced long-term maintenance needs to-morrow.

For MSE walls, steeper designsare enabled through Secu -grid®, thus optimising the useof land space. And since MSEwalls can be built more stee-ply, site disturbance in con-struction can be minimised. Assuch, in building steeper wallsthrough the installation of Secugrid®, one also realisesvaluable environmental bene-

fits. With their high strength,high modulus, interlocking ef-fect and low creep rates, Secugrid® polyester geogridsare the best candidate for such

applications. The combinationof excellent stress/strain cha-racteristics and the very goodlong-term creep-resistance va-lues of these Secugrid® geo-grids allows for an economicalselection of a high-strengthgeogrid for critical applicati-ons such as mountain roadconstruction, sustainable ur-ban development, and increa-sed (i.e., more profitable)landfill air space. Steeper wallsoffer numerous advantages.

DIMENSION1Less Is More

Technical advantages: High-strength, high-modulus, robust geogrid bars for sustainable performanceCustomer advantages: Safe and long-lasting stress transfer in the designQuality advantages: Superior manufacturing method for ensuring reinforcement strengthEcological advantages: Roads hold up better with less aggregate; steeper walls can be built.

»Maximising and minimising go hand

in hand.«

Traffic improvement factor based on the aperture stability of geogrids, modified according to US Corps of Engineers research report investigated 1990/91


Speed and safety do not oftengo together in construction.But time is money, as they say;and there is often significantpressure (with possible econo-mic incentives or penalties) tomeet a short constructionwindow.

Secugrid® excels in this seconddimension. Its two-dimensio-nal rib structure provides avery strong initial modulus andexcellent stiffness and aper-ture characteristics. While thestrength and robustness of thisgeogrid is sought for how itperforms inside of the installa-

tion, whether it’s inserted intoa road or wall, Secugrid’s ro-bustness also provides crucialprotection during installation.

Depending on the experienceof the on-site crew, installa-tion can present a number ofchallenges to a geosynthetic.Many products are damaged byequipment, poor handling orlack of proper site preparation.Aggregate, for example, is ra-rely exact to specification. Themany small imperfections in itcan be dangerous if the rein-forcement specified is not ro-bust enough. Secugrid® is du-

rable not only for the long-term design of your installa-tion but against the near-termdamage that can happen du-ring installation. Its robust-ness protects Secugrid® fromstandard damage scenarios,thus giving the project a saferlaunch so that Secugrid® canperform within a constructionthe way it is designed to.

Also, Secugrid® can be shippedin rolls and unrolled quicklyand easily at a site; thus,saving project teams money intime and labor.

Just as it is on the highway:speed and safety can go to-gether.

DIMENSION2Faster, Safer Installations

Technical advantages: True biaxial strength and radial stress transfer and interlockingCustomer advantages: Reduced long-term maintenance issues. Ease of installationQuality advantages: Round the clock quality control, ISO 9001 audited, CE marking Ecological advantages: Optimised Secugrid® for soil reinforcement reduces transport needs (and costs) to site

»Better safe than sorry.«


Because construction is so heavi ly dependent on naturalresources, all development pre-sents an environmental cost -even when it corrects environ-mental ills, such as when res-cuing former brownfield sites.We can counter and reducethose environmental coststhrough the smart incorpora-tion of geosynthetic reinforce-ment.As noted earlier, Secugrid® al-lows for the maximisation ofspace use in the construction ofmechanically stabilised earth(MSE) walls. The high-strength,low-elongation stress/straincharacteristics of Secugrid®provide veneer stabilisation andenable taller walls even on se-

vere angles such as 1:1.5 (H:V). Engineers and contractors wor-king on projects that improvesustainability can gain creditthrough this better use ofspace.

Furthermore, thereduced need forheavy aggregateship ments in road-way constructionprovides more thanthe cost savings onmaterial acquisi-tion and shipment.It is also a multi-edged environmen-tal benefit. Quarry-ing is an intensive,environmentallyharsh process. De-creasing the needfor aggregate in-creases environmental savings -not only on your site but po-tentially far away where naturalresources such as the aggregate

are being carved out and crush ed. Reducing transportneeds reduces the pollutionfrom the heavy haulage trucksneeded to transport suchweighty materials. Finally, re-duced heavy shipment traffic re-duces wear and tear on roadsbetween your reinforced siteand the aggregate pit. Thoseroads might not be designed toabsorb such prolonged, severestresses.In addition to these environ-mental benefits, one shouldalso consider ways reinforce-ment reduces site erosion. Ero-

sion is a significant problem tothe environment - particularlyerosion that results from poorconstruction practices. Most of-ten we hear or read about ero-sion at sites under construc-tion: muddy runoff, lack of siltfence, inlet clogging. But cer-tain construction material choices can lead to long-termerosion problems. Walls beginto lean. Paved roads crack. Un-paved and paved roads rut. Agreat deal of this type of ero-sion comes from within theconstruction. Internal failuresexpose the construction to ex-ternal hazards, such as exces-sive water infiltration that mayaccelerate erosion. Secugrid®reinforcement prevents that in-ternal breakdown.

DIMENSION3 Environmental Benefits

Technical advantages: High stress/strain characteristic provides multiple benefits - better distribution of tensile forces, longer service lives, improved long-term project economy, and much more

Customer advantages: Reduced dependency on aggregate, less long-term maintenance, maximised site useQuality advantages: The wide range of quality products made of polypropylene or polyester with strengths up to 400 kN/mEcological advantages: Maximising space use is a project characteristic that improves sustainability. Reducing material shipments

(e.g., heavy aggregate) is also an important environmental benefit

Calculation diagram for crushed gravel and gravel subbase - unreinforced and Secugrid® reinforced

»You do not protect the environment by

ignoring it.«


There are many technical char -acteristics by which Secugrid®may be judged: excellentstrength transfer in the geogridbars; strong performance at verylow elongations; the inter -

locking effect with aggregatethat provides not only biaxialsupport but strength in all di-rections; geogrid robustness; areduced dependency on fill ma-terial; steeper wall construc-tion; etc. No matter what mea-sure is used, Secugrid® providesthese advantages to the customer alongside long-term savings and powerful environ-mental benefits.

Further, all of these measuresmay be judged in the dimen-sion of time. In using Secugrid®for reinforcement, you’ll discov -er longer project service livesand a decreased need for main-

tenance, the very things weseek from our roads and walls.The economical selection of anddesign with Secugrid® leads totrue, long-term performance.

Installations that fail will of-ten fail first internally. Butwhen the internal strength of aconstruction is improved, thelong-term external survivabilityof the construction is im proved.That’s why Secugrid® reinforce-ment is needed.

As we build our roads and wallstoday, we can know that thereinforcement provided by Secugrid® geogrids will meanthose roads and walls will bethere tomorrow. Secugrid® rein-forces the future.

DIMENSION4 Time

Technical advantages: Long-term resistance and performance of Secugrid® soil reinforcement geogridsCustomer advantages: Quicker installation in the project, longer lasting designQuality advantages: Excellent and durable long-term creep performanceEcological advantages: Long-lasting designs, reducing carbon footprint and minimising use of finite resources

»Everyone’s a winner,that’s the truth.«


Secugrid® geogrids are produced with a new dimension of manufacturing technology. The reinforce-

ment element is a highly-oriented polypropylene or polyester bar that is uniformly extruded and

drawn to achieve a high modulus and high strength at low elongations. This is combined with the

NAUE-patented welding technology to provide a structurally sound and stable geogrid. Secugrid® is

used mainly for base reinforcement, mechanically stabilised earth (MSE) wall construction including

veneer stabilisation, the segmental retaining wall (SRW) market, embankment reinforcement, load

transfer platforms over pile caps and other soil reinforcement applications. Biaxial geogrids are

primarily used in base reinforcement applications, while uniaxial geogrids are often used in the other

markets.


The information contained herein is the best to our knowledge, true and accurate. There is no implied or expressed warranty.© 2009 by NAUE GmbH & Co. KG, Espelkamp-Fiestel, Germany · All rights reserved. · Status 08/2009 · *Patent No.: 6,572,718 B2

®

, Combigrid® and Secugrid® are registered trademarks of NAUE GmbH & Co. KG.

NAUE GmbH & Co. KGGewerbestrasse 232339 Espelkamp-FiestelGermany

Phone +49 5743 41-0Fax +49 5743 41-240E-Mail [email protected] www.naue.com

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Bentofix® BFG 5000 Secugrid® Q6 and R6


fourdimensions customer customer secugrid® · 2016. 4. 22. · fourdimensions secugrid® customer...

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