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  • Posts tagged "Erosion control"

Tag: Erosion control

Cycle and pedestrian paths: solutions to make them safer and more attractive.

Friday, 10 March 2023 by Tema Corporation
TeMa Geo Solutions - Cycle and pedestrian paths

Longer days, milder afternoons, a great desire to spend time outdoors and perhaps get some physical exercise, but also go to work and school or visit a friend… These are all good reasons for using, when available, cycle and pedestrian paths, possibly far from urban traffic.

 

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.

 

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  • Published in Erosion mats, GEO, Geogrids, Reinforced earth structures, Reinforced earth structures - Erosion control, Roads
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Controlling surface erosion with biomats and geomats

Tuesday, 25 October 2022 by Tema Corporation
GEO - Controlling surface erosion with biomats and geomats

Soil erosion is an almost inevitable natural phenomenon that has become a greater concern in recent years due to the worsening climate situation – in Italy, for example, 132 extreme weather events were recorded between January and July 2022, a higher number than the annual average over the last decade – combined with long periods of drought.

Strong winds, heavy rain, hail and runoff tend to remove the surface layer of exposed soils, which often include organic matter and seeds. Climate change facilitates erosion, making it not only inevitable but also hazardous if left uncontrolled.

It’s essential to counter or mitigate the phenomenon: soil provides us with food, biomass and raw materials; human activities take place on it and it’s part of the landscape and our cultural heritage.

 

Which structures are more subject to surface erosion?

The areas of application most affected by the erosive action of the climate are:

  • slopes and the sides of landfills and contaminated sites, and those that have been grassed for appreciable aesthetic improvement;
  • reinforced earth structures, more specifically terracing in vineyards and the embankments of canals or rivers;
  • ascending/descending ramps from flyovers, tunnel entrances and noise barriers on roads and railways;
  • dry, rocky slopes, of all angles, that shape the terrain of Italy.

 

 

The effects of surface erosion

The uncontrolled removal of the surface topsoil and the failure of vegetation to take root results in ‘thinning’ of the soil and a risk to the stability of sloping areas.

 

What can be done to prevent surface erosion?

We should begin by pointing out that a case-by-case assessment is required that considers many variables, such as the nature and uniformity of the soil, the slope gradient, the type of slope (dry or rocky) and the weather conditions in the area where intervention work is to be carried out.

In general, vegetation, whatever type it is, has a natural ability to protect soils from erosion. So the best course of action is to quickly encourage grassing and then apply biodegradable mats made of jute, straw, coconut and cellulose fibre, which can also be pre-seeded.

TeMa Geo Solutions recommends biomats such as Ecovermat, Ecovermat P and PC, and Ecovernet.

Alternatively, or combined with these, synthetic geomats, mainly made of polymer monofilaments, can be used.

Once laid, they are covered with another layer of soil: in this way, the roots of growing vegetation will become entangled with the geomat, creating an almost permanent erosion protection system.

Once again, TeMa Geo Solutions offers a wide range of geomats to choose from.

 

 

GEO - Controlling surface erosion with biomats and geomats

 

Uncertain about what to choose? We can help you. CONTACT US!

 

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  • Published in Erosion mats, GEO, Landfills, Reinforced earth structures, Reinforced earth structures - Erosion control, Roads
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TeMa even more transparent about sustainability

Wednesday, 19 October 2022 by Tema Corporation
Corporation - EDP Certification

With the new EPD certification, TeMa Technologies and Materials provides information about the level of sustainability of its products: this includes most of the membranes and geocomposites manufactured on its production lines. For 30 years, TeMa has regarded environmental protection as a duty and obligation towards the community and future generations.

What is EPD and what is analysed to obtain it?

The Environmental Product Declaration (EPD) is a document that provides specific data on the life cycle of products or a service. It measures the impacts that the production and life phases of a product have on the environment by means of a Life Cycle Assessment to determine the consumption of resources such as water, materials and energy.

It is voluntary and verified by the independent third party SGS so that certified declarations can be given to clients.

 

International acknowledgement

The EPD document is internationally acknowledged, as it complies with ISO standards. This ensures use, credibility and stability over time, making the data collected available for use in any type of environmental management system and providing information for environmental certification protocols for buildings and infrastructures.

 

Which product lines from TeMa Building Solutions are EPD certified?

The products having obtained EPD certification are:

  • the studded membrane line, which includes Membrana Nera, Membrana Nera Geo, T-Kone, Tefond, HDD, TM and MD;
  • the monofilament drainage line comprising Q-Drain C and Q-Drain ZW;
  • the anti-erosion and reinforcement geomat line, which includes K-Mat and X-Grid AM.

 

CORPORATION - EPD Certification

 

Our certificates can always be consulted by clicking here and entering TeMa in the filters.

 

drainage geocomposites and membranesenvironment protectionErosion controlErosion matsstudded membranesTeMa CorporationTeMa for the environment
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  • Published in CORPORATION, news, TeMa Technologies and Materials
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Reinforced earth structures as noise barriers

Thursday, 29 September 2022 by Tema Corporation
TeMa Geo Solutions - Reinforced earth structures as noise barriers

Hearing the noise of traffic outside your window all day long is irritating and distracting and, in the long term, also harmful to your health.

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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  • Published in Erosion mats, GEO, Geogrids, Reinforced earth structures, Reinforced earth structures - Erosion control
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Controlled landfills and the importance of isolating them

Wednesday, 13 April 2022 by Tema Corporation
TeMa Geo Solutions - Landfills

Landfills for inert, non-hazardous and hazardous waste are governed by specific laws in each country, which set out precise regulations on the construction and maintenance of these sites.

As they are virtually in the ground and designed for certain types of waste, they must meet environmental and safety standards.

Let’s take a look at everything in detail.

 

The risks of not isolating them

Assuming that proper disposal is essential, many types of waste can take years, even decades, to disintegrate and complete natural decomposition processes. At this stage, they produce a large amount of slurry, such as leachate, which is extremely contaminating for the soil and for groundwater.

Moreover, biogases are also produced, mainly methane and carbon dioxide, due to the breakdown of organic material, which must be controlled and could be used to produce renewable energy.

 

How to isolate them

Controlled landfills need to be isolated from the ground that hosts them, but to be safe they need to fulfil different functions.

 

Surface erosion control

Vegetation naturally protects the ground from erosion by weather conditions such as wind and rain, which would cause subsidence. While waiting for grassing to protect the sides and surface of the landfill, anti-erosion geomats, in a biodegradable and synthetic version, can be chosen according to needs.

TeMa Geo Solutions offers a wide range to choose from, which can be browsed here.

 

Reinforcement

A landfill site is sometimes designed and built on more or less steep slopes. If a slope is steep and the ground is unable to support itself, retaining grids need to be installed in order to prevent slippage, which would expose and damage lower layers. View all our solutions.

 

Drainage

Specific products, drainage geocomposites, can be used for the drainage of rainwater and leachate, which inevitably builds up and must be kept away from the ground.

 

Barrier

Bentonite-based products, such as Barrier Bento, allow the area to be waterproofed, including walls with high slopes and the bottom.

 

Capping

Landfills also have a final cover that must meet precise criteria. These include isolating waste from the ground and surface erosion control. However, minimising water seepage and blending into the landscape are equally important.

 

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  • Published in GEO, Geogrids, Landfills, Landfills - Drainage, Landfills - Erosion control, Landfills - Reinforcement, Landfills - Waterproofing
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