GRI Test Methods
(October, 2009)
Geotextile (GT) Related
GT1 Geotextile Filter Performance via Long Term Flow (LTF) Tests
GT2 Biological Clogging of Geotextile or Soil/Geotextile Filters (1987)
(see ASTM D1987)
GT3 Deterioration of Geotextiles from Outdoor Exposure (see ASTM D5970)
GT4 Geotextile Permittivity-Under-Load (1991) (discontinued, see ASTM
D5493)
GT5 Tension Creep Testing of Geotextiles (April 6, 1992) (see ASTM
D5262)
GT6 Geotextile Pullout (see ASTM D6706)
GT7 Determination of Long-Term Design Strength of Geotextiles
GT8 Fine Fraction Filtration Using Geotextile Filters
GT9 Grip Types for Use in Wide Width Testing of Geotextiles and Geogrids
GT10 Test Methods, Properties and Frequencies for High Strength Geotextile
Tubes used as Coastal and Riverine Structures
GT11 Installation of Geotextile Tubes used as Coastal and Riverine
Structures
GT12(a) Test Methods and Properties for Nonwoven Geotextiles Used as Protection
(or Cushioning) Materials - ASTM Version
GT12(b) Test Methods and Properties for Nonwoven Geotextiles Used as Protection
(or Cushioning) Materials - ISO Version
GT13(a) Test Methods and Properties for Geotextiles Used as
Separation Between Subgrade Soil and Aggregate - ASTM Version
GT13(b) Test Methods and Properties for Geotextiles Used as Separation Between
Subgrade Soil and Aggregate - ISO Version
GT14 The Hanging Bag Test for Field Assessment of Fabrics Used for Geotextile
Bags, Containers and Tubes
GT15 The Pillow Test For Field Assessment of Fabrics/Additives for Geotextile
Bags, Containers and Tubes
Geogrid (GG) Related
GG1 Geogrid Rib Tensile Strength (see ASTM D6637)
GG2 Geogrid Junction Strength
GG3(a) Tension Creep Testing of Stiff Geogrids (Jan. 30, 1991) (see ASTM
D5262)
GG3(b) Tension Creep Testing of Flexible Geogrids (Jan. 30, 1991) (see
ASTM D5262)
GG4(a) Determination of the Long-Term Design Strength of Stiff Geogrids
GG4(b) Determination of the Long-Term Design Strength of Flexible Geogrids
GG5 Test Method for Geogrid Pullout (see ASTM D6706)
GG6 Grip Types for Use in Width Width Testing of
Geotextiles and Geogrids
GG7 Carboxyl End Group Content of PET Yarns
GG8 Determination of the Number Average Molecular Weight of PET Yarns Based on
a Relative Viscosity Value
GG9 Torsional Behavior of Bidirectional Geogrids When
Subjected to In-Plane Rotation
GG10 Determination of the Flexural Rigidity of Geogrids
Geonet (GN) Related
GN1 Compression Behavior of Geonets (see ASTM D6364)
Geomembrane (GM)
Related
GM1 Seam Evaluation by Ultrasonic Shadow Method
GM2 Embedment Depth for Anchorage Mobilization
GM3 Large Scale Hydrostatic Puncture Test (see
ASTM D5514)
GM4 Three Dimensional Geomembrane Tension Test
(see ASTM D5617)
GM5(a) Notched Constant Tensile Load (NCTL) Test for
Polyolefin Resins or Geomembranes (1992) (see ASTM D5397)
GM5(b) Single Point NCTL Test for Polyolefin Resin or
Geomembranes (see ASTM D5397 Appendix)
GM5(c) Seam Constant Tensile Load (SCTL) Test for
Polyolefin Geomembrane Seams
GM6 Pressurized Air Channel Test for Dual Seamed
Geomembranes
GM7 Accelerated Curing of Geomembrane Test Strip Seams
Made by Chemical Fusion Methods
GM8 Measurement of the Core Thickness of Textured
Geomembranes (see ASTM D5994)
GM9 Cold Weather Seaming of Geomembranes
GM10 The Stress Crack Resistance of HDPE Geomembrane
Sheet
GM11 Accelerated Weathering of Geomembranes Using a
Fluorescent UVA Device (see ASTM D7238)
GM12 Asperity Measurement of Textured Geomembranes using
a Depth Gage
GM13 Test Methods, Properties and Testing
Frequency for High Density Polyethylene (HDPE) Smooth and Textured Geomembranes
GM14 Selecting Variable Intervals for Taking Geomembrane
Destructive Seam Samples Using the Method of Attributes
GM15 Determination of Ply Adhesion of Reinforced
Geomembranes (see ASTM D6636)
GM16 Observation of Surface Cracking of Geomembranes
GM17 Test Methods,
Properties and Testing Frequency for Linear Low Density Polyethylene (LLDPE)
Smooth and Textured Geomembranes
GM18 Test Methods, Properties and Testing Frequency for
Flexible Polypropylene (fPP and fPP-R) Nonreinforced and Reinforced
Geomembranes
GM19 Seam Strength and Related Properties of Thermally
Bonded Polyolefin Geomembranes
GM20 Selecting Variable Intervals for Taking Geomembrane
Destructive Seam Samples Using Control Charts
GM21 Test Methods, Properties and Testing Frequency for
Ethylene Propylene Diene Terpolymer
(EPDM) Nonreinforced and Scrim Reinforced Geomembrane
GM22 Test Methods, Required Properties and Testing
Frequencies for Scrim Reinforced Polyethylene Geomembranes Used in Exposed
Temporary Applications
GM23 Laboratory
and/or Field Observation of Surface Chalking of Flexible Polypropylene
Geomembranes
GM24 Incubation and Subsequent Evaluation of Single 180°
and Double 180° Folding of Geomembranes
GM25 Smoke Testing of Field
Fabricated Geomembranes
Geosynthetic Clay Liner (GCL) Related
GCL1 Swell Measurement of the Clay Component of GCL's
(see ASTM D5890)
GCL2 Permeability of Geosynthetic Clay Liners (GCLs)
(see ASTM D5887 and ASTM D6766)
GCL3 Test Methods, Required Properties, and Testing Frequencies of Geosynthetic
Clay Liners (GCLs)
GCL4 Gripping of Reinforced GCLs to End Platens
During Direct (Interface) Shear Testing
Geocomposite (GC) Related
GC1 Soil-Filter Core Combined Flow Test
GC2 Strip Drain Flow Rate Under Load
GC3 Strip Drain Kinking Efficiency
GC4 Compression Behavior of Prefabricated Edge Drains and Sheet Drains
GC5 Erosion Control Systems to Protect Against Soil Detachment by Rainfall
Impact and Overload Flow Transport
GC6 Erosion Control Systems for High Velocity Flows in Channels
GC7 Determination of Adhesion and Bond Strength of Geocomposites
(see ASTM D7005)
GC8 Determination of the Allowable Flow Rate of a Drainage Geocomposite
GC9 Mechanical Deformation Behavior of Geosynthetic Aggregate Drainage Systems
GC10 Hydraulic Behavior of Geosynthetic Aggregate Drainage Systems
Geosynthetic (GS)
Related (i.e., Multipurpose)
GS1 CBR Puncture Strength (see ASTM D6241)
GS2 Rupture Strength of Geosynthetics by Pendulum Impact
GS3 Selecting In-Situ Monitoring Methods and Devices for the Evaluation of
Geosynthetic Performance
GS4 Time Dependent (Creep) Deformation Under Normal Pressure
GS5 Impregnation of Geosynthetics Under Load
GS6 Interface Friction Determination by Direct Shear Testing (Jan. 30, 1991)
(see ASTM D5321)
GS7 Determining the Index Friction Properties of Geosynthetics
GS8 Determining the Connection Strength of Mechanically Anchored Geosynthetics
GS9 Oxidative Induction Time of Polyethylene Geosynthetics by High Pressure
Differential Scanning Calorimetry (see ASTM
D5885)
GS10 Accelerated Tensile Creep and
Creep-Rupture of Geosynthetic Materials Based on Time-Temperature Superposition
Using the Stepped Isothermal Method (see ASTM D6992)