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A megoldás

A megoldás

Two ideal solutions of artificial turf, special designed for grass growth

In the first place has been taken into consideration a geocomposite consisting of at least a woven geonet and nonwoven geotextile fabric. The intrinsic characteristics of the fabric resulting from specific selected material with low weight and free of holes, allows the drainage of water and especially gas exchange through the geocomposite. It's known that nonwoven fabrics in the Geotechnical are mainly used as filters of separation of the various layers, but do not prevent roots penetration in the soil thanks of their internal porosity and those interconnected pores are irregular in shape and three-dimensional (being pores not holes, they have a three-dimensional shape).
The roots grow creeping in the fabric within the pores and the divaricator action of the roots creates the space within the tissue without any particular difficulty, then the roots penetrate the nonwoven fabric when they find free space and ideal conditions (water, air and nutrients) and grow even under the fabric in the soil.
To optimize the conditions for the development of the roots, it only remains to reduce the mechanical forces of nonwoven geotextile, increase the porosity in the tissue and in the growth medium above and beneath of this special backing. One of the purposes of coupling of the woven Geonet with nonwoven Geotextile is precisely to filter fine particles thanks to a light Geotextile, but also offer a certain mechanical strength to the Geocomposite according to the intended use.
In Geosynthetic industry there are already suitable products and it only necessary to apply them of the manufacture of synthetic turf in order to produce a hybrid system.

Testing the growth in nonwoven Geotextile we observed two major advantages for the growth of the grass.

  1. Despite being highly porous nonwoven Geotextile holds water better than a sandy soil. This feature acts as a buffer: it absorbs excess moisture and returns it to the appropriate time to plant resulting in saving water.
  2. The nonwoven Geotextile acts as a mulching film and prevents the development of weeds.
  3. The nonwoven Geotextile acts as a blanket and retains the heat in the soil during the winter. In fact, we noticed a significant increase in root development under the nonwoven Geotextile, in late autumn.

A valid alternative is apparently easier to manufacture a synthetic surface on a three-dimensional Geonet. In this case we faced two technical problems:

  1. the lock up of artificial fibers to the Geonet a few years ago was a serious problem and still has not been solved by the manufacturers of artificial grass with tufting technology,
  2. give a three-dimensional shape to open tissue (Geonet) to avoid the formation of water barriers, for about surface water tension, deposited in the holes of a flat net. In our studies, the flat tissue with open warp and weft didn't have satisfactory results, so this generic feature was not effective.
    We turned to find an innovative technology that simultaneously weaves artificial fibres while weaves the backing too, known as Woven Grass.
    Using warp and weft of various thicknesses we have developed a three-dimensional backing with an irregular shape as well as irregular and three-dimensional are also the shape of the empty spaces created between the weft and the warp. Woven technology allows a certain lock up of artificial fibers to the backing​​, as they are woven in 3-4 knots within the backing. With the application of a light coat of acrylic glue, the artificial grass fibers are welded with a strength above 30 N and the problem of fixing of the fibers has been resolved without sealing the pores.

Study those two fabrics has been relatively "easy"... but optimize the sand based growth medium was long and more complicated.

Applying a special made artificial turf to reinforce natural grass has so many advantages but inevitably we have some limits. We need to study an specific growth medium to:

  1. compensate topsoil hardness and improve sports performance,
  2. optimize the growth conditions of natural grass,
  3. reduce maintenance and mechanical applications,
  4. have a long duration,
  5. was not easy, but we did it developing Geofill PG.

PowerGrass is the only real and effective system worldwide... but we are talking about the hardware

PowerGrass is the best way to start up a field construction but, like any living system without skilled person, failure may occur.

We see everyday a strong interest and we realize that the project will be soon widespread all over the world, but to make it successful we believe that experts need to get a complete understanding on how to make it work. We designed PowerGrass to be easy and simple, but natural grass is a cultivation which requires skilled personnel.

Initial growth in PowerGrass wtih Geofill PGInitial growth in PowerGrass wtih Geofill PG

Natural grass grows faster and uniform in PowerGrass with sand and 50% Geofill PG.

Initial growth in USGA standard topsoilInitial growth in USGA standard topsoil

The growth is slower and less uniform in the substrate to USGA standards with 80% sand and 20% peat.

Young Seedling are growing fastYoung Seedling are growing fast

The young seedlings (light green) grow between the synthetic yarns (dark green). A month later everything seems completely natural and it is difficult to identify the synthetic turf.

Roots Growth below PowerGrass backingRoots Growth below PowerGrass backing

The grass breathes above and below the artificial backing, grows healthy and vigorous.

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