Nonwovens are used in the construction with the purposes of filtration, reinforcement and protection. They should be kept in enclosed areas with no sun light and they do not contain any hazardous and toxic substance for the environment.
These products are generally used for the construction of high-ways, railways, storages, parking lots, airstrips, oil transfer pump and tanks.
In such construction areas, geo-textiles have a reinforce effect on the foundation mechanism. They provide support for the equal distribution of weight which is gathered rapidly on a specific point of the foundation. In addition, since they are particles-proof yet non-waterproof, they can be used on the foundation of dams or as foundation reinforce against landslides.
Application Areas
Drainage: Nonwoven geo-textiles are ideal filter materials. Constructing French Drain Channel, roof drainage, land drainage and perforated pipe installation are very practical with geo-textiles. Besides, they provide the required drainage with high drainage capacity in-plane for complex vertical applications such as tunnel and retaining wall.
Asphalt coating: An application of nonwoven polypropylene asphalt felt geo-textile should be absolutely performed before coating of new wearing course over old asphalt. When used beneath new wearing course, geo-textiles have retarding effect on the reflection of cracks towards newly-worn out wearing course.
On Weak Foundation and Roads: For buildings that are designed to be constructed on weak foundations, primary building materials need to be sunk into weak foundation and the stabilization of the foundation should be completed. Otherwise, permanent damages may occur depending on the type of the building due to unexpected subsidence. Therefore, geo-textiles that are used under the weak foundations serve as a separator and reinforced material by stabilizing the foundation and minimize the risk of unexpected different subsidence.
Landslide Control: Geo-textiles are used as a filter and bedding material so as to prevent the movement of back filling in coastal buildings due to the waves. Geo-textiles used in such applications effectively separate bulk and fine materials and inhibit the mixing of these materials by absorbent power generated by the waves.
Protection of Insulation
Geo-textiles have two application forms on roof insulation:
1. Protection of isolation material
2. Separation of layers and as a filter layer
With high puncture strength, they can be applied right on the insulation. Therefore, materials beneath geo-textiles are protected from damages and leaking of cement slurry.
Protection of Membrane on Foundations
Puncture risk of insulation materials is high due to high pressure on foundations. Thus, geo-textiles should be used as pressure diffuser. In addition, geo-textiles provide flexibility for insulation for the movements of the building and prevent pressure on insulation during these movements.
Protection of Geo-membrane
Generally used in open field, geo-membrane applications have higher risk of tearing and wearing due to puncture and excessive friction. Therefore, geo-textiles serve as a protective layer either beneath or over based on the application type.
Having 5 main functions, this product exhibits at least two of these functions on the application area which follow as:
Protection of Insulation
High puncture strength of geo-textiles provides an option of application right on insulation. Thus, materials beneath geo-textiles are protected from damages and leaking of cement slurry.
Membrane Protection in Foundations
The puncture risk of insulation materials is high due to high pressure in foundations. For this reason, geo-textiles should be used as pressure diffuser. In addition, geo-textiles provide flexibility for insulation for the movements of the building and prevent pressure on insulation during these movements.
- On unpaved roads and between floor and foundation at airports
- On asphalt roads and between floor and foundation at airports
- Between floor and ballast for rail way applications
- Between the layers of waste landfill areas
- Between geo-membranes and soil drainage layers
- Between foundation and backfill soil
- Between road backfill, foundation and backfill soil
- Between foundation and backfill soil at soil or concrete dams
- Between foundation soil and rigid retaining walls
- Between foundation soil and flexible retaining walls
- Between foundation soil and storage piles
- Between sidewalks and granolithic
- Beneath parking lots
- At the floor of sport and athletics fields
- Forming an aesthetic covering beneath pre-casting blocks and panels
- In case of weak filtration, between drainage layers
- In many parts of dams
- Between old and new asphalt layers
IN REINFORCEMENT OF WEAK FLOORS AND BACKFILLING MATERIALS (REINFORCEMENT FUNCTION)
On weak floors and road
For buildings that are designed to be constructed on weak foundations, primary building materials should be prevented to be sunk into weak foundation and the stabilization of the foundation should be completed. Therefore, geo-textiles that are used under weak foundations serve as a separator and reinforce the material by stabilizing the foundation and minimize the risk of unexpected different subsidence.
Landslide Control: Geo-textiles are used as a filter and bedding material so as to prevent the movement of back filling in coastal buildings due to the waves. Geo-textiles used in such applications effectively separate bulk and fine materials and inhibit the mixing of these materials by absorbent power generated by the waves.
- On unpaved roads, soft floors
- On soft floor at airports
- On soft floors at railways
- On soft floors of waste landfill areas
- On soft floors of sport and athletics fields
- On karstic and thermo- karstic areas
- For covering of unstable waste landfill areas
- For bordering side rail way ballast
- For bordering soil such as geo-tube in soil preservation systems
- For construction of retaining walls reinforced with geo-textile
- For reinforcement of backfills
- For supporting of vertical slope constructions
- For reinforcement of soil and concrete dams
- For reinforcement of lined gabion
- For stabilizing of temporary slopes
- For stopping and minimizing swell on floor slopes
- For reinforcement of joint flexible covering
- For reinforcement of foundation/base on soft floor
- For reinforcement of foundation/base on karstic floor
- For reinforcement of foundation/base on thermo-karstic floor
- For reinforcement of base between deep foundation hatches
- For bridge constructions on cracked or jointed concrete
- For holding of graduated stone filter plate
- For stabilizing concrete block of retaining walls
- For preventing geo-membrane punctures of floor improvement
- For preventing geo-membrane punctures by waste or footing stone in constant storage areas
- For forming more stable side slopes due to high frictional resistance
- For reinforcement of soft floor in dam constructions
- For bridge constructions that will be built over waste landfill during area sealing
- For increasing loading capacity of shallow foundations
FILTRATION APPLICATIONS (FILTRATION FUNCTION)
Geo-membrane protection
Generally used in open field, geo-membrane applications have higher risk of tearing and wearing due to puncture and excessive friction. Therefore, geo-textiles serve as a protective layer either beneath or over based on the application type.
- For replacement of granule soil/stone filter
- On unpaved roads and between base/foundation at airports
- On unpaved roads and beneath foundation layer at airports
- Beneath ballast material on railways
- Around pulverized stone surrounding under drain
- Around pulverized stone surrounding non-under drain
- Around punctured under drain pipes
- For collecting leaking water beneath waste landfill areas
- For filtering hydraulic backfilling
- As ash curtain
- For protecting chimney drainage materials
- Between backfill soil and gaps of retaining walls
- Between backfill soil and gabions
- For preventing soil flow into geonet
- For preventing soil flow into geo-composites
- Around sand columns in sand drainage
- As filter beneath ripraps
- As filter between pre-casting blocks
DRAINAGE (DRAINAGE FUNCTION): Nonwoven geo-textiles are ideal filter materials with heat treatment and needle method. Constructing French Drain Channel, roof drainage, land drainage and perforated pipe installation are very practical with geo-textiles. Besides, they provide the required drainage with high drainage capacity in-plane for complex vertical applications such as tunnel and retaining wall.
- For chimney drainage in soil based dams
- As drainage pads for horizontal flow
- As drainage sheet beneath additional backfilling
- For providing drainage behind retaining walls
- For providing drainage at the base of retaining walls
- For providing drainage beneath the railway ballast
- For providing water drainage beneath geo-membrane
- For providing gas drainage beneath geo-membrane
- For providing drainage beneath sport and athletics fields
- For providing drainage on roofs and terraces
- As replacement of sand and wick drainage
- For distribution of water on soil surfaces