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Geomembrane

  • Geomembrane is a low-permeability geosynthetical material made with the composite of plastic membrane (base material) and non-woven fabric. Permeability of the final product is primarily dependent on that of the plastic membrane. Geomembrane (HDPE, LLDPE, LDPE, PE/EVA/ECB, PVC, EPDM) wholesale available in forms of roll, liner and sheet with competive prices and qualities, which has a great marketshare in indonisia, india, united states and austrilia.
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    variety of geomembrane available

  • Most of the low-permeability plastic membranes worldwide are made of HDPE(High-density polyethylene),PVC (polyvinyl chloride), PE (polyethylene), or EVA (ethylene/vinyl acetate copolymer). ECB (ethylene vinyl acetate modified asphalt blend), EPDM (ethylene propylene diene monomer). geomembrane is also used in some tunnel engineering works. All of these macromolecular chemical materials are lightweight and erosion-resistant, and have low specific weight, high ductility, high elastic strength, and good performance at low temperature.
  • Geomembrane is used as water-proof barriers. The macromolecular polymers used (as base material of composite) include LDPE (low-density polyethylene), HDPE (high-density polyethylene), and EVA (ethylene/vinyl acetate copolymer).

    1. Supplied in different specifications of width and thickness

    2. Resistant to environmental stress cracking

    3. Resistant to chemical erosion

    3. rammed earth+crushed stone+concrete foundation+ green crushed stone+ non-woven banket+ grass paver+mixed nutrient soil

    4. Stable in a wide range of temperature and up to a long service life

    5. Suited to applications requiring low permeability, such as landfills, tailing piles, channels, banks and dams, and subways

    Geomembrane is used as barriers in earth dams to block water seepage, as the plastic membrane is not permeable. The plastic membrane has high tensile strength and high ductility and thus able to bear the water pressure and adjust to bank deformations that may happen. The non-woven cloth, a macromolecular short-fiber chemical material, also has high tensile strength and high ductility. The plastic membrane and non-woven fabric are bonded by needle-puncturing or heat-adhesion. The resulting composite of course has high tensile strength and is resistant to puncturing. Additionally, as the non-woven fabric has a rough surface the resulting composite has an advantageous high coefficient of friction at the interface, which contributes to stability of the composite geomembrane and protection layer. Geomembrane also has good performance in resisting erosion caused by bacterial activities and chemical actions (acid, alkali, salt, and so on) and has a long service life in unexposed applications.


    Geomembrane state technical standard (impermeable material - plastic film)

    LDPE geomembrane technical parameters (equal to American GRI-GM17 standard )
    No. Item Value
    0.3mm 0.5mm 0.75mm 1.00mm 1.25mm 1.50mm 2.00mm 2.50mm 3.00mm
    1  Density,g/cm3 0.939
    2 Tensile strength at break(MD/CD),N/mm ≥; 6.0 9.5 14 19 23 28 37 47 56
    3 Elongation(MD/CD),% ≥ 560
    4 Tear strength ,N ≥ 27 45 63 90 108 135 180 225 270
    5 Puncture strength,N ≥ 52.5 84 133 175 217 259 350 434 525
    6 Carbon black content,%  2.0~3.0
    7 carbon black dispersion Carbon black dispersion(only near spherical agglomerates)for 10 different views 9 in categories 1 or 2 and 1 in category 3
    8 min Oxidative induction time ≥60
    9 ‐ 70°C Low tempreture impact brittle property Pass
    10 Vapour permeability coefficient,g.cm/(cm2.s.Pa) ≤1.0×10-13
    11 Dimensional stability ±2.0
    LLDPE Geomembrane (CJ/T276-2008) Equal to American GRI-GM17 standard
    No. Item Value
    0.50mm 0.75mm 1.00mm 1.25mm 1.50mm 2.00mm 2.50mm 3.00mm
    1  Density ,g/cm3         0.939
    2 Tensile strength at break(min)(MD/CD),N/mm  13 20 27 33 40 53 66 80
    3 Elongation(MD/CD),%  ≥800
    4 (M) (N/mm) 210 370 420 520 630 840 1050 1260
    5 Tear strength (min)(MD/CD) 50 70 100 120 150 200 250 300
    6 Puncture strength(min)(MD/CD) 120 190 250 310 370 500 620 750
    7 Elongation at multiaxial ≥,% 30
    8 % Carbon black content 2.0~3.0
    9 Carbon black dispersion Carbon black dispersion(only near spherical agglomerates)for 10 different views 9 in categories 1 or 2 and 1 in category.
    10 Oxidative induction time,min Standard OIT≥100
    High pressure OIT≥400
    11 Oven aging at 85°C ≥35
    12 UV Resistance % retained after 1600 hrs ≥35
    glossy HDPE geomembrane technical parameters for Landfill (CJ/T234-2006)(equal to American GRI-GM13 standard)
    No. Value Test value
    0.75mm 1.00mm 1.25mm 1.50mm 2.00mm 2.50mm 3.00mm
    1  Density(g/cm3 )    0.939
    2 Tensile propeties  
    3 Yield strength, N/mm   11 15 18 22 29 37 44
    breaking strength,N/mm    20 27 33 40 53 67 80
    Yield elongation,% 12
    breaking elongation,% 700
    4 Tear resistance,N 93 125 156 187 249 311 374
    5 puncture resistance,N  240 320 400 480 640 800 960
    6 hstress crack resistance 300
    7 Carbon black  
    8 Carbon black content,% 2.0~3.0
    Carbon black dispersion Carbon black dispersion(only near spherical agglomerates)for 10 different views 9 in categories 1 or 2 and 1 in category.
    9 Oxidative induction time 13 20 27 33 40 53 66
    10 Standard OIT,min 100
    11 High pressure OIT,min 400
    12 Oven aging at 85°C  
    13 Standard OIT-% retained after 90 days,% 55
    14 High pressure OIT-% retained alw 90 days,% 80
    15 UV Resistance  
    16 Standard OIT retained after 1600 hrs,% 50
    17 High pressure OIT retained after 1600 hrs,% 50
    18 Low temperature impaci brinle ta ‐70°C Pass
    19 Permeability,g·cm/(cm2·s·Pa) ≤1.0×10-13
    20 Dimensional stablity,% ±2
    Roalway & Tunnel PE/EVA/ECB sigle-layer waterproof geomembrane physical parameters, China science [2008]21 parameters 
    No. Items Value
    EVA ECB PE
    1 Thickness,mm 0.2~4
    2 Width,m 2.5~8m
    3 Tensile strength at break,Mpa,≥ 18 17 18
    4 Elongation at break,%,≥ 650 600 600
    5 Tear strength ,kN/m ,≥ 100 95 95
    6 Impermeability,0.3MPa/24h No leakage No leakage No leakage
    7 Bending at low tempreture  ,℃ ,≤ -35 -35 -35
    8 Stretch tensor at heating,mm Elongation,≤ 2 2 2
    Shrink,≤ 6 6 6
    9 (80℃×168h)Air oven aging Tensile strength at break,MPa,≥ 16 14 15
    Elongation at break,%,≥ 600 550 550
    10 Anti-alkali[saturatln Solution of Ca(OH)2×168h] Tensile strength at break,Mpa,≥ 17 16 16
    Elongation at break,%,≥ 600 600 550
    11 Nuture weathing at manual simulation Tensile strength at break retained,%,≥ 80 80 80
    Elongation at break retained,%,≥ 70 70 70
    12 Puncture strength,N  1.5mm 300 300 300
    2.0mm 400 400 400
    2.5mm 500 500 500
    3.0mm 600 600 600
    PVC geomembrane parameters(GB12952-2003)
    No. Item
    1 Tensile Strength, MPa ≥ 8.0 12.0
    2 Elongation at break,% ≥ 200 250
    3 Size change rate in heat treatment, %,≤ 3.0 2.0
    4 Bending low tempreture,℃     No crackle ta ‐20°C No crackle ta ‐25°C
    5 Anti-puncture Not leaking
    6 Impermeability Impermeable
    Geomembrane performance comparision between traditional rough surface and slip resistance nipple rough surface
    Item Value
      Mpa
     Tensile strength
    Elongation,% Friction coefficient
    Traditional textured geomembrane ≥11 ≥100 0.4
    HDPE anti-skid point geomembrane ≥28 ≥300 0.8
    nipple rough surface HDPE geomembrane technical parameters (CJ/T234-2006) (equal to American GRI-GM13 standard)
    No. Value Test value
    0.75mm 1.00mm 1.25mm 1.50mm 2.00mm 2.50mm 3.00mm
    1 Density,(g/cm3 ) 0.939
    2 Tensile propeties              
    3 Yield strength,N/mm 11 15 18 22 29 37 44
    breaking strength, N/mm 8 10 13 16 21 26 32
    Yield elongation,%  12
    breaking elongation,% 100
    4 Tear resistance,N  93 125 156 187 249 311 374
    5 puncture resistance, N 200 267 333 400 534 667 800
    6 hstress crack resistance 300
    7 Carbon black  
    8 Carbon black content,%  2.0~3.0
    Carbon black dispersion Carbon black dispersion(only near spherical agglomerates)for 10 different views 9 in categories 1 or 2 and 1 in category.
    9 Oxidative induction time  
    10 Standard OIT,min  100
    High pressure OIT,min 400
    11 Oven aging at 85°C  
    12 Standard OIT-% retained after 90 days,% 55
    High pressure OIT-% retained alw 90 days,% 80
    13 UV Resistance  
    14 Standard OIT retained after 1600 hrs,% Not recommended since the high temperature of the Std-OIT test produces an unrealistic result for some of the antioxidants in the UV exposed samples.
    High pressure OIT retained after 1600 hrs,% 50
    15 Low temperature impaci brinle ta ‐70°C Pass
    16 Permeability,g·cm/(cm2·s·Pa)  ≤1.0×10-13
    17 Dimensional stablity,%   ±2