The influencing factors of Geomembrane Price

Geomembranes are synthetic liner materials used for various containment and fluid barrier applications. This guide provides a detailed overview of geomembrane prices, composition, properties, applications, suppliers, and other technical specifications.

Geomembrane Composition

Geomembranes are made from different polymers that determine their chemical resistance, strength, flexibility, and other properties. The main resins used are:

Polyethylene (PE)Most common geomembrane material, available as high density (HDPE) and linear low density (LLDPE). HDPE is harder and stronger. LLDPE is more flexible.
Polyvinyl Chloride (PVC)Used for high chemical resistance but less flexible than PE. Comes in reinforced and non-reinforced grades.
Ethylene Propylene Diene Monomer (EPDM)Has high elasticity and weathering resistance but lower strength than PE and PVC.
Polypropylene (PP)Has high strength and puncture resistance but limited flexibility.
Chlorosulfonated Polyethylene (CSPE)Known by the trade name Hypalon®. Has good weatherability.

The resin choice depends on the chemical exposure, temperature, stress, and elongation needs of the application. Polyethylene is suitable for most uses but PVC, EPDM, PP, or CSPE may be required for specific chemical or environmental conditions.

Geomembrane price

Geomembrane Properties

Key properties that determine geomembrane suitability for different uses include:

PropertyTypical ValuesSignificance
Density0.93-0.96 g/cm<sup>3</sup>Affects strength, chemical resistance, puncture resistance. HDPE has higher density than LLDPE.
Tensile Strength700-2800 psiMeasure of resistance to pulling and tearing forces. HDPE has higher tensile strength.
Elongation at Break10-700%Ability to stretch without breaking. LLDPE has higher elongation.
Tear Resistance100-500 lb/inResistance to growth of cuts and punctures. HDPE has higher tear strength.
Puncture Resistance50-120 lbAbility to withstand objects pressing against the geomembrane. HDPE offers better puncture resistance.
Carbon Black Content2-3%Improves UV resistance and weatherability. HDPE typically has higher carbon black content.
Chemical ResistanceExcellent to poorDepends on polymer. PP and PVC offer best chemical resistance. LDPE and LLDPE have moderate resistance.
Temperature Range-50°C to 80°CMaximum service temperature range. Polyethylene offers widest temperature range.

Polyethylene geomembranes provide a good balance of strength, chemical resistance, and durability for most containment applications. PVC, PP, or other materials may be required for high chemical exposure such as landfill leachate collection.

Geomembrane Applications

Geomembranes are used for the following applications which have different property requirements:

ApplicationTypical PolymerKey Properties Needed
Landfill Liners and CoversHDPE, LLDPEChemical resistance, tear strength, flexibility at low temperature
Mining Heap Leach PadsHDPE, LLDPEUV resistance, tear strength, elongation
Oil & Gas ContainmentHDPE, LLDPEChemical resistance, high temperature performance
Canals and ReservoirsHDPE, PVCUV resistance, elasticity, strength
Water Treatment LagoonsHDPE, PVCChemical resistance, weathering resistance
Secondary ContainmentPP, HDPEHigh strength, tear and puncture resistance

Polyethylene geomembranes are suitable for most containment needs. PVC may be required for high chemical exposure applications like wastewater treatment. Polypropylene offers very high puncture resistance for demanding applications.

Geomembrane price

Geomembrane Standards and Specifications

Geomembranes are produced in sheet or roll form in various thicknesses. They must meet standardized test methods and specifications designated by organizations such as ASTM International.

ParameterStandardsTypical Values
ThicknessASTM D51990.5mm to 3mm
Sheet WidthGRI GM9Up to 22m
Sheet LengthGRI GM13Up to 250m
DensityASTM D7920.93-0.96 g/cm3
Tensile PropertiesASTM D63810-28 MPa
Tear ResistanceASTM D100436-200 N/mm
Puncture ResistanceASTM D4833100-600 N
Stress Crack ResistanceASTM D5397>300 hr
Carbon Black ContentASTM D16032-3%
Carbon Black DispersionASTM D5596Grade 1-3

Manufacturers provide datasheets listing geomembrane properties that comply with specifications. Testing must be done using standardized lab procedures.

Geomembrane Sizes and Forms

Geomembranes are produced in a range of sheet widths and lengths, and in roll form for ease of transportation and installation:

FormSize RangeDescription
Sheets1-22m wide <br> 1-250m longFactory-fabricated sheets for small applications.
Standard Rolls1-10m wide <br> 50-250m longField deployed from rolls. Common sizes based on application.
Jumbo Rolls15-22m wide <br> 250-1000m longMinimizes factory seams. Used for large continuous liners.
Fabricated PanelsSite-specificFactory assembled panels with seams for easy installation.

Narrower rolls are used for applications like gas pipelines or water channels. Wider jumbo rolls minimize field seaming for reservoirs and landfills. Factory panels further simplify installation.

Geomembrane Grades

Geomembranes are produced in different grades based on manufacturing process, quality controls, and certification:

Grade GRI GM13Basic geomembrane quality controlTemporary liners, dewatering
Grade GRI GM17Moderate manufacturing QCSecondary containment
Grade GRI GM19Standard engineered linerLandfills, mining, reservoirs
Grade GRI GM21High specification membraneHazardous waste, full NQA-1 compliance

Higher grade geomembranes undergo more rigorous testing and inspection during production. Critical applications like hazardous waste containment may require Grade GRI GM21 material. Lower grades can be used for temporary containment needs.

Geomembrane price

Geomembrane prices depend on the material grade, thickness, size specifications, manufacturer, and order quantity. Typical pricing ranges are:

GeomembraneThickness RangePrice Range
HDPE1.0 – 2.0 mm$1.50 – $3.00 per m2
LLDPE1.0 – 2.0 mm$1.80 – $3.50 per m2
PVC1.0 – 1.5 mm$3.50 – $7.00 per m2
PP1.0 – 1.5 mm$6.00 – $12.0 per m2
EPDM1.1 – 1.5 mm$4.50 – $9.00 per m2

In general, polyethylene geomembranes are the most economical. PVC, PP, and EPDM cost considerably more due to more expensive resins. Thicker geomembranes also command higher pricing.

Jumbo roll prices may be 30-50% lower on a per area basis compared to standard rolls. Factory fabricated panels are more expensive due to value-added processing steps.

Geomembrane price

Leading Geomembrane Manufacturers

Some of the major global suppliers of geomembranes include:

GSE EnvironmentalGSE, RoofarmHDPE, LLDPE, PPUSA, Mexico, Europe, Middle East
SolmaxSolmax, SunTechHDPE, LLDPE, PVCCanada, USA, Europe
Carlisle Construction MaterialsCCM, Bento, Sure-FlexHDPE, PVCUSA, Europe, Asia
Agru AmericaAgruHDPE, LLDPE, PVCUSA, Middle East, Asia
FirestoneFirestoneEPDM, PVCUSA, Latin America

These established manufacturers have a global presence and can supply geomembranes worldwide. They offer technical support for material selection and design.

Local and regional suppliers are also available in many countries and can offer more competitive pricing. Imported materials from Asia are lower cost but have higher risk.

Cost Saving Tips

Here are some recommendations to reduce overall geomembrane costs for liners and containment projects:

  • Use lower grade material if performance requirements allow
  • Select lowest suitable thickness to reduce quantity needs
  • Order jumbo rolls or fabricated panels where possible
  • Take advantage of surplus inventory or off-spec materials if properties permit
  • Obtain quotes from multiple regional suppliers
  • For small needs, check distributors for roll stock availability
  • Consider reused or recycled materials if physical properties are adequate
  • Ensure competitive bidding process for large projects
  • Enter into long term supply agreements for multi-year projects

Working closely with an experienced geomembrane manufacturer is important to ensure proper material selection and most cost effective solution.

Geomembrane Handling and Installation

Proper transportation, storage, deployment, seaming and testing is critical to avoid geomembrane damage and maximize performance. Key guidelines include:

  • Use padded cradles and nylon slings to lift and move rolled materials
  • Store away from direct sunlight and inspect prior to installation
  • Unroll following site layout plan, allowing slack for contraction
  • Ballast material immediately or use loading berms to prevent wind uplift
  • Clean and prime sheet surfaces prior to seaming
  • Conduct trial welds initially and test seam strength
  • Repair seams with extrusion welds for polyethylene materials
  • Inspect installed liner and perform electrical leak detection checks for defects

It is advisable to have an experienced installation supervisor onsite for quality assurance during critical steps like seaming.

Geomembrane Inspection and Testing

Geomembranes must be tested during manufacturing and installation for compliance to project specifications:

WhenTests ConductedStandards
Incoming MaterialThickness, density, tensile properties, tear strengthASTM D5994, D5199, D638, D1004
During ProductionSheet size, hospitality, visual defectsEN 13416
Trial WeldsShear and peel testing on seamsASTM D6392, D4437
Installed LinerAir pressure testing of seams and electrical leak detectionASTM D5820, D7240

Records must be maintained for all geomembrane testing. Defect areas should be marked and repaired as needed before covering.

Geomembrane Selection Guide

This comparison table summarizes the key factors to consider when selecting a geomembrane material:

PriceLowModerateHighVery HighHigh
StrengthModerateLowLowVery HighModerate
ElongationHighLowVery HighLowModerate
Tear ResistanceModerateLowLowHighModerate
Puncture ResistanceModerateLowLowVery HighModerate
UV ResistanceGoodExcellentExcellentModerateExcellent
Chemical ResistanceModerateExcellentPoorExcellentExcellent
Temperature RangeWide-10°C to 60°C-40°C to 70°C0°C to 80°C-20°C to 70°C
Popular ApplicationsLandfills, mining, reservoirsChemical containmentRoofing, pondsHazardous waste, pipesLandfills, tanks

Polyethylene offers the best overall value for most containment needs. PVC and other materials provide higher performance for specific requirements.

Geomembrane price


Q: What is the typical lifetime of a geomembrane?

A: Properly installed geomembranes can be very long lasting. HDPE liners can last 50+ years. PVC can last 40+ years. Lifespan depends on polymer, thickness, installation quality, and exposure conditions.

Q: Can a geomembrane have holes or defects?

A: Minor defects may occur during manufacturing or installation. Electrical leak detection surveys can identify breaches. These can be repaired by patching or extrusion welding.

Q: Can geomembranes withstand freezing temperatures?

A: Flexible materials like polyethylene retain ductility at low temperatures. They can withstand freeze-thaw cycles. Rigid PVC becomes brittle below -10°C.

Q: What are factory seams versus field seams?

A: Factory seams are made by hot wedge or extrusion welding under controlled conditions. Field seams are made on site after deployment. Seam quality is generally better in factories.

Q: How long does it take to install a geomembrane liner?

A: For a given area, single layer installation rate is approximately 300-500 m2/man-hour. Large projects may take several weeks or months depending on liner acreage and site access.

Q: Can a geomembrane have color other than black?

A: Yes, geomembranes can be produced in other colors like green or tan. However, black is standard because carbon black provides UV resistance.

Q: Are there recycled geomembrane products?

A: Yes, reprocessed materials containing recycled resin are available. Physical properties vary based on recycling method and content. Performance testing is recommended.

Q: What are GRI GM standards for geomembranes?

A: GRI GM standards are manufacturing specifications set by the Geosynthetic Institute. GM13 is the lowest grade, GM21 is highest. Each has defined test methods and acceptance criteria.

Q: How is open textured geomembrane different?

A: It has a textured surface that contacts the soil. This interlocks with the substrate providing very high friction and stability on slopes.

In summary, geomembranes are versatile synthetic materials used for containment applications across industries. Selecting the right product involves considering performance needs, site conditions, project costs, and installation requirements. With proper material choice and construction quality assurance, geomembranes provide long lasting, reliable fluid barrier systems.

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