Nonwoven geotextile. Edilfloor Professionalism and knowledge at 360

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1 Nonwoven geotextile Edilfloor Professionalism and knowledge at 360

2 Edilfloor News Located in Sandrigo since 1979, Edilfloor SpA manufactures nonwoven geotextiles and geogrids for application in the geotechnical field and nonwoven technical textiles for industrial applications. The geocomposites for the acoustic insulation are also part of Edilfloor product range. Since 30 years, Edilfloor SpA is present in the geosynthetics market and today its production capacity is of about 50 millions of square metres. With a ISO 9001 certified quality system, Edilfloor SpA uses a Strategy for the quality since the beginning of its activity: from the production to the sales and to the customer services, its quality strategy is the key to success of Edilfloor SpA.

3 Woven geogrids Edilfloor main goals To supply products and services which can satisfy customers needs and ideas To supply products and services creating a surplus value To improve the technical and human skills of Edilfloor personnel by respecting their expectations To improve the internal processes so to get the maximum of the efficiency and of efficacity To establish and maintain a partnership with the suppliers so to increase the competitive advantages for both parties To operate respecting the security laws and the environment To operate achieving all the results with a behaviour ethically correct and socially responsible Strategy To act with the perspective of the continuous improvement so that EDILFLOOR is recognized as a high quality blend To be focused on the sales in new markets facing the competitors with a high quality/price relation To increase the range of the EDILFLOOR products To expand the commercial and marketing action in the national and foreign markets To invest considerably in the technology innovation and research To maintain a dimension that allow the company to adapt quickly to the market and customers changes Customer Management Customer Satisfaction Production A key to success has always been the very strict relationship existing between the production, the sales personnel and the management. Those three elements allow Edilfloor SpA to achieve the most important result: the customer satisfaction.

4 Geotextiles are permeable fabrics which are employed in contact with the soil or any other construction products, in civil engineering or geo-technical works such as road works, railway constructions, tunnels and underground works, reservoirs and dams, shore protection, underground works and foundations, river banks and canals, landfills, filtration, road pavements. EDILFLOOR SpA geotextiles are marketed with these brands: GEODREN DENSITEX GEOPAV THERMOFELT

5 Nonwoven geotextile Geodren PPST Nonwoven geotextile in high quality white polypropylene staples, needlepunched and calandered. Produced without chemicals or glues. Geodren PPST P Nonwoven geotextile in high quality white polypropylene staples, needlepunched. Produced without chemicals or glues. Geodren PPEXT Nonwoven geotextile in white polypropylene staples, needlepunched and calandered. Produced without chemicals or glues. Geodren PPT Nonwoven geotextile in multicoloured polypropylene staples, needlepunched and calandered. Produced without chemicals or glues. Geodren PEIT Nonwoven geotextile in white polyester staples, needlepunched and calandered. Produced without chemicals or glues. Geodren PECT Nonwoven geotextile in multicoloured polyester staples, needlepunched and calandered. Produced without chemicals or glues. Thermofelt PPEXT2 Nonwoven geotextile in white polypropylene staples, needlepunched and thermobonded on both sides. Produced without chemicals or glues. Thermofelt PET/T1 Nonwoven geotextile in high quality white polyester staples, needlepunched and thermobonded on one side. Produced without chemicals or glues. Geopav Nonwoven geotextile in black high quality polypropylene staples, needlepunched and thermobonded on one side. Produced without chemicals or glues.

6 Roads The Geodren en PP/S/T version is suitable for the construction of new roads, motorways, yards and heavy traffic areas. It has a remarkable separating, strenghtening and filtering action and it is usually put on the building site before the laying of the granular material, in order to improve load distribution and to avoid gravel contamination by the soil. Railways In order to adapt the lines to faster trains, a complete reliability of the railway structure, also for what concerns life and limited maintenance operations, is necessary. Geodren PP/S/T can be used for this purpose, as a separating layer between the foundation ground and the ballast layer, placed under the lines. The geotextile avoids the ballast penetrating into the soil, that would cause a reduction of the railway load capacity and, at the same time, it avoids the foundation ground penetrating the ballast layer causing a reduction of the support elasticity.

7 Nonwoven geotextile Tunnels For what concerns the construction of tunnels, galleries and under ground structures, Geodren PP/S/T is able to carries out two main functions: the protection of the geomembranes and the drainage of the percolating water. It is very important that the water-proofing of a tunnel is done in a professional way. Landfills Geodren PP/S/T has often been used in the last few years, also for the construction of landfills and dams, as a consequence of the frequent use of geomembranes. The reasons of the success of these new materials are represented by their better laying operations, their more technical reliability, and, above all, their lower costs compared to traditional water-proofing systems done using concrete slabs, bitumen, clay layer etc..

8 Coast-line protection The effects of wave movement complicate the designing of coast-line protective structures. Also in this field GEODREN is frequently used, especially as a filter. It is easily layable, also under water, and in this case it is advisable to use a polyester geotextile. River banks River banks, both natural or artificial, are constantly subject to water action, that becomes particularly dangerous, in the sense of the erosion, in case of high speed current and/or rapid level changes. The erosion which takes place at the foot of the bank can, in fact, in time cause problems for what concerns the stability of the bank itself, with consequential breakage. Geodren PP/S/T offers many technical and economical advantages, if installed as a filter and as an antierosion system, directly on the bank ballast, before the application of the protective surface elements (rocks, gabions, mattresses ).

9 Nonwoven geotextile Under ground structures and foundations The under ground cement structures, being more or less porous, need to be protected against environmental aggression. The elements that can have a negative effect on under ground structures are water, soil, corrosive substances, biological agents and stray currents. A simple protective covering is no longer sufficient to protect them, so products for a water-proof protection are required. Roofing The geotextile in this application is used as a protection of the waterproofing membranes in the construction of the flat roofs, acting as an anti-puncture protection layer.

10 In this section we introduce the main functions of the EDILFLOOR geotextiles. For more technical details, the Design Guide with Edilfloor geosynthetics is available.

11 Nonwoven geotextile Separation The aim of the separation function is keeping either two terrain layers of different granulometric composition or two layers consisting of different materials separated, without preventing water circulation. Filtration The filtration is the function that defines the possibility of a geotextile to act as a filter preventing the migration of the fine particles of the base terrain and allowing the water to flow out through the surface of the nonwoven geotextile. It has to be designed considering three apparently contrasting criteria: The retention requirement The permeability requirement The non-retention requirement Protection The applications in which geotextiles have to fulfil a protection function are usually constructions of tunnels, dumps, underground constructions, foundations, catchment basins, flat roofs. In all these cases the geotextile is used for protecting the geomembrane, that fulfils a waterproofing function in the structure. Drainage Drainage is the geotextile capacity of transporting liquid or gas along its plane. Reinforcement The geotextile reinforcement function with nonwoven geotextiles is obtained through products with an extremely high resistance to tensile strength and therefore of course unit weight. Fulfilling a reinforcement function usually means that the geotextile has to constrict the terrain thus making it less sensitive to deformation under load.

12 Energy absorption: One of the new concept concerning the mechanical properties of the geotextiles is the energy index. This characteristic measures the capability of a geotextile to absorb the energy developed by the forces in the ground. In this page we can see a picture of a standard tensile test according to EN ISO In horizontal we can read the elongation value measured in %; in vertical we can read the value of the force applied in N/20 cm. The energy index is a calculated value and indicates the area under the curve as shown in the image in this page. Due to the usual nonwoven geotextile curve we can simplify the calculation as the area of triangle, so the product of the maximum tensile strength multiplied with the elongation at maximum load divided by two Max tensile strength (2800 N/20 cm - 14 kn/m) Energy index: (14 kn/m x 0,58 m) /2 = 4,06 kj/m 0 Elongation (58%) AN EXAMPLE: Name of the product: GEODREN PPST 200 g/mm 2 Max tensile strength (MD/CMD): 14 kn/m N/20 cm Elongation at max load: 58% Energy index: 4,06 kj/m

13 Nonwoven geotextile The quality control: All EDILFLOOR geotextiles, independent of the quality of the raw material used, are top-quality in their category. This is due above all to the fact that the quality system with which the company operates complies with the requirements of the regulation UNI EN ISO 2001:2000, better known as VISION Edilfloor wide range: GEODREN products meet the different performance needs according to the application in which they will be used. This line includes polypropylene and polyester geotextiles manufactured with both top-quality fibres and recycled fibres, white or multicoloured. Damage during installation: This is one of the most delicate stages affecting the performance of a geotextile once it has been laid. A specific regulation EN ISO defines the procedures of the test on the damage suffered by the geotextile when it is being laid. GEODREN PPST results are very good even compared to other geosynthetic materials, since the reduction of their mechanical performances after installation is very limited, which means that the mechanical and hydraulic features of these geotextiles are preserved even at the moment of installation. In fact the elongation of our nonwoven geotextiles allows the product to adapt to the irregularity of the surface without breaking. We show you hereafter a comparison chart between different geosynthetic materials with the results of the damage during installation on different soils and laying conditions for the products listed here below. The testing has been made by an independent laboratory. GTN: GEODREN PP/S/T 500P g/m 2. GGW1: Woven geogrid, in high tenacity polyester yarns coated PVC GGW2: Woven geogrid, in high tenacity polypropylene GGE: Mono-directional extruded geogrid, in polypropylene 100% 80% 60% 40% 20% 0% 97,6 % 92,4 % 87.0 % 43,1 % Lab test with corindone Lab test with porphiry Prove in sito con porfido 70,2 % 71,1 % 97,8 % 97,6 % 99,7 % 97,8 % 99,8 % 91,6 % GTN GGW1 GGW2 GGE The UV resistance of polypropylene staple: The breaking strength of PP raw materials is reduced by UV exposure. The reduction of the breaking strength depends on exposure time, exposure intensity, temperatures, chemical and mechanical influences. Therefore exact values of the impact cannot be forecast. The reduction of the breaking strength is measured in number of years which pass until the breaking strength has reached 50% of its original value. Our experience and Lab test on Xenotest 1200 provide following values for PP raw materials: REGION Medium exposure per year Durability with standard PP raw materials (50% of the initial strength) Durability with UV treated PP raw materials (50% of the initial strength) Kly = Kilo-Langley = 1000 Langley (Langley is a unit of irradiation energy) 1 Kly=1 Kcal/cm 2 NORTHERN EUROPE kly 1 year 3 years CENTRAL EUROPE kly 1 year 3 years SOUTHERN EUROPE kly 6 months 2 years MIDDLE EAST kly 6 months 2 years

14 Nonwoven geotextile Edilfloor SpA wants to act in the geosynthetic sector with those main goals: The satisfaction of customer needs and expectations The continuous improvement of the internal organization process so to get the maximum level of efficiency and efficacy The contribution of all Edilfloor employees to define the improvement plan The development of an effective quality culture in all internal processes The correctness and seriousness in all the relationships with the suppliers and all the people that co-operate with Edilfloor The respect for the community values and for the environment EMPA

15 Edilfloor EDILFLOOR SpA Via L. Da Vinci, 15 (Z.A.) Sandrigo (Vicenza) Tel Fax

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