Reinforcement biaxial PET grid woven from high-strength polyester yarn with a protective polymer coating compatible with bitumen, incorporating a PP non woven geotextile.

Used in road applications.

Available in different traction resistances:

• 20/20 kN/m
• 30/30 kN/m
• 40/40 kN/m
• 60/60 kN/m

Functions

Reinforcement

Applications

Roads

TECHNICAL DATA SHEET 20/20

TECHNICAL DATA SHEET 30/30

TECHNICAL DATA SHEET 40/40

TECHNICAL DATA SHEET 60/60

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Surface water shapes the soil, now more than ever before, due to the increase in extreme events. Today, there is a growing awareness that the ‘natural’ resources we have at our disposal are capable of limiting the effects of scouring and runoff. On dry slopes, for example, soil erosion is the process whereby materials are removed by the mechanical and chemical actions of wind and water. From a technical/scientific perspective, a further distinction is made: in addition to the concept of soil erosion , there is soil loss and sediment yield .

The effect of weathering on the soil is therefore a phenomenon to be foreseen and controlled. On the surface, the causes cannot always be detected, but a Geologist – after carrying out the necessary research – will pinpoint the problems and recommend solutions.

The main phenomena associated with soil depletion are:

• the thickness of arable soil, which includes organic substances, water, mineral salts and fine particles, decreases on a local scale: within a few generations, fertile soil can become arid;
• accelerated and uncontrolled surface erosion can cause landslides on steep slopes, increasing the extent and intensity of crumbling to the point of destroying the vegetation cover of an entire slope;
• eroded material is carried downhill, thereby reducing the capacity of watercourses and thus increasing the risk of flooding;
• the sedimentation of eroded material that ends up in irrigation channels decreases their efficiency and service life;
• eroded material, often laden with chemicals from agricultural practices such as fertilisers and insecticides, instead of being absorbed by the soil, becomes concentrated in watercourses, spreading pollution over a wider area.

The new design concept – determined by precise environmental choices – undoubtedly promotes sustainability. In this respect, on dry slopes, soil ‘helped’ by suitable products to encourage revegetation becomes a very strong ‘barrier’ to inclement weather over time.

By observing the grassed embankments bordering major road and railway routes, we can appreciate the need, which is met, to protect the safety of infrastructures against problems of topsoil slippage. These are artificial embankments, created to meet technical requirements. They were therefore barren at the time of construction, and hence exposed to the impact and removal of soil by rainwater. Ensuring grassing therefore increases the level of safety, improves visual impact and, last but not least, respects biological diversity that is preserved.

New TeMa Geo Solutions materials make these solutions possible. To encourage vegetation to take root, TeMa has come up with K-Mat synthetic geomats and biomats in natural fibre matting (straw, coconut and jute), ECOVERMAT and ECOVERNET, in addition to the X-Grid PET-C AMrange of geomats, which are also useful for reinforcing slopes.

TeMa, an Italian company established in 1993, has gained experience on 4 continents with products for the world of geotechnics, which are trusted by planners and contractors. Over 30 years of providing geotechnical solutions that aid the soil with its own erosion control and stabilisation potential, resulting in a clear environmental advantage.

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The Katlehong job, in South Africa, was a major project for TeMa in a highly critical construction context, given that it involved building a municipal water reservoir in the shape of a 200 thousand hectolitre tank.

With the introduction of a number of geosynthetic products in place of conventional building materials, the costs came in significantly lower than initially projected and structural efficiency was improved considerably across such a large project, promising to deliver a long service life.

The TeMa solution in cases like these: laying X-Grid PET-C-0 100/100 Biax — a biaxial stabilization geogrid woven from high-strength polyester, with a protective polymer coating — over the whole bed in alternating layers with fill material between. With each new layer, the geogrid has to be placed with the appropriate orientation to ensure the structure’s foundation will provide the required overall stability and bearing capacity, thus allowing for and negating the negative effects of any differential settlement.

The use of TeMa Geo geogrids allows for space to be incorporated into the design to accommodate the underground services associated with the structure being built, while providing the designer with significant advantages, compared to the use of conventional natural materials, including ease of installation and shorter construction timeframes.

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These applications are for the protection, maintenance, retention, reinforcement and drainage in the field of major environmental projects, involving products that provide innovative efficient and long-lasting solutions.

We are aware that a kind of public resistance to sustainability announcements has already begun. We are therefore interested in helping companies that are taking appropriate action to protect the environment. This is not only to ensure that they can better comply with regulations but also, and above all, to increase the effectiveness and credibility of their work.

TeMa Geo solutions in applications

The areas of expertise of TeMa Geo Solutions include:

• football fields
• landfills and contaminated sites
• tunnels
• reinforced soil retaining structures
• dry slopes
• grassy road and railway embankments
• roads
• drainage ditches
• horse training and racing tracks.

Products and functions: a range starting with geosynthetics

Geogrids are structural elements used to reinforce soils in the construction of retaining walls, block retaining walls, reinforced soil retaining structures, landfills and contaminated sites. The open mesh structure allows the reinforcement geogrids to develop ‘passive’ resistance at the transverse ribs, thus effectively increasing their inherent stabilising effect and enabling the system to withstand significant levels of stress.

The TeMa Geo Solutions range includes uniaxial or biaxial X-Grid geogrids made of fibreglass, polyester or PET coated with a polymer layer, coupled, or not, with a nonwoven geotextile, to be chosen to suit the project.

Offering products such as bentonite geocomposites, drainage geocomposites, facings, erosion control mats and essential accessories, the TeMa Geo Solutions range fulfils various functions for the retention anddrainage of rainwater and groundwater.

The TeMa Geo world offers its long-standing (since 1993) expertise and experience in the polymer-based product category (geosynthetics). Over the years, research at its in-house labs has enabled the development of solutions that integrate with the environment in a more specific sense, such as biodegradable erosion control mats, and in a broader sense, such as geomats and studded membranes.

TeMa also offers cutting-edge geotechnical solutions for vineyards

This is not surprising, as the TeMa Geo headquarters are situated on the eastern edge of the Prosecco hills, a UNESCO World Heritage Site. The company therefore has made its experience available to preserve and protect the viticultural landscape with its products for erosion control, reinforcement and ground drainage in an environment subject to the passage of agricultural vehicles. Click here to download the specific catalogue.

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Components for strengthening

Designed for strengthening, the knitted X-Grid PET C geogrids are made from high-strength polyester yarn, with a protective polymer coating. They deliver tensile strength in the 20 kN/m to 800 kN/m range.

Components for erosion control

They protect the face of the structure from erosive agents, like wind and driving rain, until the vegetation has had time to establish. TeMa Geo Solutions offers natural solutions made from cellulose fibres, like Ecovermat, or jute fibres, like Ecovernet, as well as synthetic solutions made from monofilaments (K-Mat F), polypropylene (K-Mat FA) or fibreglass (K-Mat FG Green).

Components for drainage

Drainage geocomposites like Q-Drain are used to address the problem of water seeping into the backfill.

Components for retaining

We have a line of facings made from electrically welded wire mesh — with inclinations ranging from 65° to 80° — to ensure the exposed face is straight.

Practical tips

On site

System components must be stored well away from machinery, and suitably protected from dust or residues from work on site.

To avoid excessive overlaps and waste, the X-Grid geogrids must be cut to size using a suitable metal stand with metal trestles supporting a circular rod to be inserted inside the roll.

Erosion control components — whether biodegradable or synthetic — must be stored in a dry place and not in direct contact with the natural ground, so as to avoid laying problems later on.

Metal formwork must be stored well away from areas where machinery is operating, and carried in only when it is time to install.
During assembly, it is best to apply U-shaped strips of rubber or metal so that the geogrids can be wrapped correctly over the formwork without getting caught on the top of the bars. (see photo)

Special instructions

We advise against backfilling with silty and clayey material; at the very least, only use this kind of material after mixing it with aggregate.

The full range of system components comes with instructions on the relevant procedures to be followed. Contact us, we’ll be happy to provide case studies and full information.

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X-Grid FG-BC-PPL is a biaxial fibreglass grid coated in bitumen compatible polymer. The grid incorporates a lightweight PP nonwoven geotextile.

Used in road applications as asphalt reinforcement.

Available in different traction resistances:

• 50/50 kN/m
• 100/100 kN/m

Functions

Reinforcement

Applications

Roads

TECHNICAL DATA SHEET 50/50

TECHNICAL DATA SHEET 100/100

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The advantages of sustainable mobility

We are increasingly talking about environmental sustainability and the physical and psychological benefits of physical exercise:

• Less air and noise pollution caused by traffic.
• Reduced transport costs.
• Greater freedom of movement.
• Enhanced green areas in cities.
• Better quality of life by doing a bit of sport on a daily basis.

TeMa Geo Solutions for safety and urban benefits

‘Unequipped’ roads can be hazardous for those who choose to get around by bicycle: for this and environmental reasons, cycle and pedestrian paths are the ideal solution, as they are increasingly becoming part of local government mobility plans.

TeMa Geo Solutions offers all its experience by combining reinforced earth structures and their feature of being green, with cycle and pedestrian paths.

An embankment can be made or a road widened with its sides sloping at 65°/70° using the T-System (consisting of formworks, X-Grid PET geogrids and K-Mat FG Green erosion control mats as facing), thereby making the path safe and allowing a slope to turn green again. Making a slope green again provides a natural erosion control function: to encourage it, TeMa Geo Solutions recommends installing natural or synthetic mats. To make the structure stable, the T-System for reinforced soils adopted by TeMa involves using X-Grid PET geogrids.

The post Cycle and pedestrian paths: solutions to make them safer and more attractive. appeared first on TeMa Corporation.

The area covering about 2,000 sqm required some intervention work regarding reinforced earth structures and drainage. In particular, we undertook the preliminary work for extension works dating back to 2016.

To the south-west of the building, the soil was secured and then surfaces were replanted with greenery.

Let’s see how this was done in more detail.

Type of intervention

In order to make the slope in front of the complex secure, the intervention work involved constructing reinforced earth structures in several banks, more specifically 3 modules of 6 m in height each.

In addition, to manage the water coming from the hydro-geographic basin situated upstream of the area, specific surface drainage works were carried out.

The solution from TeMa Geo Solutions

For the reinforced earth structure, 3 modules were constructed with anchorage lengths of 7 m and a strength of 110 kN/m provided by X-Grid PET PC 110 geogrids.

As for drainage, instead, a Membrana Nera Geo was used, the 8 mm HDPE studded membrane bonded to a filter nonwoven geotextile with a PE slotted tube at the base.

The drainage system was also installed at the horizontal contact points of each berm to prevent future water seepage into the reinforced earth structure.

The post Reinforced earth structures and drainage appeared first on TeMa Corporation.

This is why the WHO and a number of laws govern the use of noise remediation systems in cities: the Framework Law no. 447 of 1995 for Italy and the European Directive on Environmental Noise no. 49/2022. If the cause of the noise cannot be addressed, the solution is to install protective barriers. Various kinds can be used, but in this case we focus on reinforced earth structures that require specific measures, which we discuss here.

For example, the Pedemontana Veneta is a new toll motorway in Italy: nearly 100 km long. Almost entirely in operation in the north-east of the Veneto region, the main route of this motorway runs through a deep trench in order to minimise the ‘territorial’ and environmental impact on the surrounding area. This means that long sloping areas of reinforced earth can be found along the sides of the motorway, with rows of trees and hedges for 58.61 km and green areas covering 1,333,410 square metres of hedgerows, groves, grassy slopes and tree-lined meadows.
A focus on noise with much regard for the landscape.

What do reinforced earth noise barriers consist of?

For this type of embankment with its typical trapezoidal shape, earth is used that will be covered by vegetation over time. Geosynthetic reinforcements and geogrids are added to support the earth, which already has good compressive strength. These are inserted horizontally into the ground and develop friction and tension that stabilise the structure, increasing its resistance to stress.

The TeMa Geo Solutions offer includes the X-Grid Pet PVC range of geogrids, with different resistance values, which are ideal for all kinds of contexts.

Another aspect to bear in mind is surface erosion of the soil: to counteract this, synthetic geomats are applied, also with a mulching function to encourage the growth of grass cover, or natural fibre bionets.

Also in this case, TeMa Geo Solutions offers a wide choice ranging from Ecovermat F Grass and Ecovernet FJ to the K-Mat range.

Why use a vegetation barrier as a protective noise barrier?

A vegetation barrier has an unquestionable ability to limit the spread of sound waves: some of them are absorbed, some reflected and some deflected. As a result, the amount of sound waves reaching the receiver is greatly reduced and noise can be dampened by several decibels.

The advantages of a reinforced earth sound-deadening barriera

Creating reinforced earth structures brings considerable advantages:

• it costs less because you can often use earth available on-site
• no special maintenance is required other than regular trimming.
• it helps the environment and integrates with it: the use of vegetation also reduces vehicle emissions by absorbing CO ₂ and purifying the air.

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We’re in the eastern corner of the Veneto region, the Prosecco hills have outdone themselves once again this year and a steady stream of grape-laden trailers continue to roll past on their way to the wineries. But this year’s harvest has had to contend with rather uncertain weather patterns: frosts in late spring, persistent rain interspersed with dry spells, with violent storms and hail over summer.

These conditions certainly don’t help the soil, putting it at risk of slips, subsidence and erosion. But if we apply TeMa Geo Solutions’ modern technologies and materials designed for this very purpose, we can protect the land from damage and, what’s more, do it in a sustainable way.

Not far from here, just a few kilometres from our headquarters, the Prosecco hills fall largely within the UNESCO World Heritage Site, meaning any measures must be strictly reconstructive, designed to protect the status quo and absolutely non-invasive: “gentle” on the environment.

TeMa Geo Solutions has come up with high-performance solutions to control the natural erosion of the soil, reinforce slopes, and drain water with:

• biodegradable fibre matting made from 100% natural jute such as Ecovernet® J500 XL and Ecovermat P Grass, which provide protection to stop soil being blown or washed away by the elements, and encourage vegetation;
• the K-Mat F erosion control synthetic geomat;
• reinforcement geogrids such as X-Grid PET PVC, which can withstand considerable stress levels;
• the Speedrain drainage geocomposite, which drains away water from the surrounding soil, stabilizing any surface slips.

Products

If you wish to receive more information, CONTACT US or take a look and download our “Vineyards” catalogue.

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