GRI-Specifications

GRI-GM 13

The standard specification used to determine the Test Properties, Test Frequencies, and Recommended Warranty for High Density Polyethylene (HDPE) Smooth and Textured Geomembranes.

The GRI GM13 specification is a model of required properties for a manufacturer to meet or exceed. It is intended to ensure the good quality and performance of the HDPE geomemberane. The certification also helps determine the recommended warranty for the geomembrane material/product. One way of determining whether the geomembrane product line meets the standard requirements is to have an independent testing laboratory evaluate the material and provide a testing report accordingly.

GRI-GM13
Thickness ASTM D5199/D5994
Density ASTM D1505
Puncture Resistance ASTM D4833
Tear Resistance ASTM D1004
Stress at Yield & Break Elongation & Yield at Break ASTM D638
(Type IV) Carbon Content ASTM D1603
Carbon Black Dispersion ASTM D5596
Asperity Heights GM 12
Standard OIT ASTM D3895
High Pressure OIT ASTM D5885
SP-NCTL ASTM D5397
Oven Aging ASTM D5721
QUV for 1600 hours GM 11

 

GRI-GM 18

The standard specification used to determine the Test Properties, Testing Frequencies, and Recommended Warranty for the Non-Reinforced (fPP) and Scrim Reinforced Flexible Polypropylene (fPP-R) Geomembranes.

GRI - GM 18
Thickness ASTM D5199
Mass Per Unit Area ASTM D5261
Tear Resistance (Unreinforced) ASTM D1004
Tear Resistance (Reinforced) ASTM D5884
Tensile Strength for Unreinforced ASTM D638
(Type IV) Puncture Resistance ASTM D4833
Ply Adhesion (MD/TD) ASTM D6636
Grab Strength (Procedure A) ASTM D751
Carbon Content Muffle ASTM D4218
Low Temperature Bend ASTM D2136
High Pressure OIT ASTM D5885
Multiaxial for Unreinforced ASTM D5617
Oven-Aging ASTM D5721
UV Exposure in QUV GRI-GM11

 

GRI-GCL 3

The standard specification used to determine the Test Methods, Required Properties, and Testing Frequencies of Geosynthetic Clay Liners (GCLs).

This specification covers the Manufacturing Quality Control (MQC) of the GCL. The two general types of GCL covered in this specification are the (1) reinforced and (2) non-reinforced. The specification is intended to aid manufacturers, suppliers, purchasers and users of GCLs to have an acceptable level of effort in Manufacturing Quality Control. It is important to note that this specification does not address the Manufacturing Quality Assurance (MQA)’s product testing and product acceptance criteria. These are outside the scope and performed by an different organization, independent from the manufacturer.

GRI - GCL3
Thickness ASTM D5199
Mass Per Unit Area ASTM D5261
Density ASTM D1505
Permeability & Index Flux ASTM D5887
Swell Index of Clay ASTM D5890
Fluid Loss of Clay ASTM D5891
Peel Strength ASTM D6496
Tensile ASTM D6693/D882/D6768
Specific Gravity ASTM D792
Exposure of Geofilm ASTM D5721
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