GEOMEMBRANES GEOSTAR

The HDPE "Geostar" geomembrane is a synthetic barrier, made of high-density polyethylene, constituting a hydro-insulating and gas-tight protection for soils.

The HDPE "Geostar" geomembrane is used for construction of water- and gas-tight screens and is applied in:

  • Sealing and recultivation of waste dumps;
  • Screens of leachate tanks;
  • Ditches and /storage reservoirs;
  • Sealing for objects connected with storage and distribution of liquid fuels;
  • Canals and water-courses, flood banks and man-made lakes;
  • Sealing for liquid manure tanks, concrete tanks, ferroconcrete tanks and steel tanks;
  • Sealing of yards on which the scrapped vehicles are recycled;
  • Water insulation for the elements of structures which have contact with soil, i.e. retaining walls, abutments, traffic tunnels, etc.

At present the HDPE geomembranes are the best, and thus the most popular and most often used insulating material. The HDPE geomembranes owes its advantage over other products offered on the market to its exceptional properties, such as:

  • Resistance to chemical substances;
  • Resistance to ageing and UV radiation;
  • Very good physical and resistance properties;
  • Micro-biological resistance, which is very important in the environment of waste;
  • Maximal guarantee of tightness with simultaneous facility of controlling the tightness of connections - due to the modern methods HDPE foil bonding;

The HDPE "Geostar" geomembranes are offered in 5 m width and the following thicknesses: 0.50, 0.60, 0.75, 1.00, 1.50, 2.00 and 2.50 mm, in version smooth on both sides as well as in textured version (on one or both sides).

Using of HDPE "Geostar" geomembrane for the construction of waste dumps

The process of designing and construction of safe waste dump is an extremely responsible and difficult task. Waste dumps are engineering structures of special significance due to ecological hazards, i.e. the possibility of emerging of dangerous substances from them. Geosynthetics, which should meet the most rigorous technological and quality standards, have bigger and bigger role in this responsible process. At present, the HDPE geomembranes are the best materials for sealing a waste dump due to their physical properties and inertness to the impact of produced leachates and gases.

Scheme of waste dump

1. Control drainage, serving also for lowering the surface of underground water, 2. Pipes receiving the gases from waste dump, 3. HDPE "Geostar" geomembrane, thickness min. 1.5 mm, 4. Filtration non-woven fabric, 5. Upper drainage for rainwater discharging, 6. Band drainage around the waste dump, 7. Layer of humus for land reclamation, 8. Cover layer, 9. HDPE "Geostar" geomembrane, 10. Non-woven geotextile fabric, 11. Filtration layer, 12. Leachate drainage.

Delivery of HDPE "Geostar" geomembrane to the construction site
The HDPE "Geostar" geomembrane is delivered to the construction site in a form of evenly wound rolls, with visible and legible label, including necessary information, in accordance with binding regulations.

Transport and storage at the construction site聽
The equipment used for transporting and lifting "Geostar" geomembrane should prevent the film from damaging during these operations. The material should be stored in secured area. It is allowed to store the geomembrane in maximally three layers.

Unwinding of rolls
Individual rolls of the "Geostar" geomembranes should be arranged on the construction site in a manner minimizing the possibility of their displacement. Special precautions should be taken at this point, in order to avoid possible damaging and soiling of internal sides of unwound rolls. On a slope the geomembranes should be placed in a manner preventing them from sliding down.

Methods of joints performing
Making the joints, i.e. connecting the individual strips of the "Geostar" geomembrane, is the most important stage of installation of this material. Due to the fact that proper making of joints decides about the tightness of the entire system, a special attention should be paid while this task is performed. It is recommended to apply thermal joints, performed with one of the following methods:

  • Hot air;
  • Hot wedge;
  • Ultrasonic;
  • Electrical.

The welding method is allowed only in accessible places, where other method cannot be applied, and for any repairs of geomembrane.

Recommendations regarding making the joints:

  • Ambient temperature: from +5掳C to +40掳C;
  • Contact surfaces should be levelled on the entire length of joined strips, with an overlap appropriate for the chosen method of joining;
  • Contact surfaces should be free from pollutions, dust, dampness and otherforeign substances;
  • Such works should not be performed during strong wind or rain.

Control of performed joints quality
Each joint should be controlled on an ongoing basis, using one of the following methods:

  • Pressure method;
  • Vacuum method;
  • Ultrasonic method;
  • Piezoelectric method.

The HDPE "Geostar" geomembranes have the CE Declaration of Conformity and are covered by the Company's Production Control System.

Technical information:

GEOSTAR 1 mm
Thickness mm ±10%1,00
Width m ±3%5,0
Water permeability m3/m2/day<10 -6
Resistance to static puncture>2,41 kN 0,3 mm
Coefficient of gas permeabilitym2/Pa/s<6,13 x10-18
Longitudinal yield strength cm3/m2/ MPa/day<633
Transverse yield strength MPa>24,7
Coefficient of gas permeabilityMPa21,9
Longitudinal unit elongation at yield point %>9,1
Transverse unit elongation at yield point %11,9
Longitudinal tensile strength MPa>29,6
Transverse yield strength MPa28,8
Longitudinal unit elongation %868
Transverse unit elongation % 827
Resistance to climatic conditions Spełnienie wymagań
   
GEOSTAR 1,5 mm
Thickness mm ±10%1,5
Width m ±3%5,0
Water permeability m3/m2/day<10 -6
Resistance to static puncture>2,94 kN 51,2 mm
Coefficient of gas permeabilitym2/Pa/s<4,84 x10-19
Longitudinal yield strength cm3/m2/ MPa/day<465
Transverse yield strength MPa>22,8
Coefficient of gas permeabilityMPa22,3
Longitudinal unit elongation at yield point %>10,5
Transverse unit elongation at yield point %11,7
Longitudinal tensile strength MPa>27,6
Transverse yield strength MPa30,7
Longitudinal unit elongation %>905
Transverse unit elongation %889
Resistance to climatic conditions Spe艂nienie wymaga艅
   
GEOSTAR 2 mm
Thickness mm ±10%2,00
Width m ±3%5,0
Water permeability m3/m2/day<10 -6
Resistance to static puncture>5,94 kN 134 mm
Coefficient of gas permeabilitym2/Pa/s<3,76 x10-18
Longitudinal yield strength cm3/m2/ MPa/day<324
Transverse yield strength MPa>24,2
Coefficient of gas permeabilityMPa23,4
Longitudinal unit elongation at yield point %>10,3
Transverse unit elongation at yield point %10,4
Longitudinal tensile strength MPa>30,8
Transverse yield strength MPa31,5
Longitudinal unit elongation %>936
Transverse unit elongation %918
Resistance to climatic conditions Spe艂nienie wymaga艅
   
GEOSTAR 2,5 mm
Coefficient of gas permeabilityMPa23,4
Transverse yield strength MPa>24,2
Longitudinal yield strength cm3/m2/ MPa/day<324
Coefficient of gas permeabilitym2/Pa/s<3,76 x10-18
Resistance to static puncture>5,94 kN 134 mm
Water permeability m3/m2/day<10 -6
Width m ±3%5,0
Thickness mm ±10%2,50
Longitudinal unit elongation at yield point %>10,3
Transverse unit elongation at yield point %10,4
Longitudinal tensile strength MPa>30,8
Transverse yield strength MPa31,5
Longitudinal unit elongation %>936
Transverse unit elongation %918
Resistance to climatic conditions Spe艂nienie wymaga艅
   
GEOSTAR 1 mm
Hygienic ApprovalHK/W/0199/01/2009 wa偶ny do 2014-05-13
   
GEOSTAR 1,5 mm
Hygienic ApprovalHK/W/0199/01/2009 wa偶ny do 2014-05-13
   
GEOSTAR 2 mm
Hygienic ApprovalHK/W/0199/01/2009 wa偶ny do 2014-05-13
   
GEOSTAR 2,5 mm
Hygienic ApprovalHK/W/0199/01/2009 wa偶ny do 2014-05-13

 

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