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Significance and Use
5.1 This test method is used to determine if the GCL material meets specifications for mass per unit area at approximately 0 % moisture content, by oven-drying. It can be used as an index test for quality control or quality assurance to determine specimen conformance.
1.1 This test method covers the laboratory determination of the mass per unit area of a sample of a geosynthetic clay liner (GCL). The test method is also applicable to a multicomponent GCL. The dry mass of the clay can be found by simply subtracting the manufacturer's reported nominal mass of the geosynthetic component(s) from the total mass of the dry GCL. The moisture content of the GCL can also be determined by subtracting the initial total mass of the GCL from the total mass of the dry GCL.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See Section for specific precautionary statements.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D4439 Terminology for Geosynthetics
D4643 Test Method for Determination of Water (Moisture) Content of Soil by Microwave Oven Heating
D4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction Materials Testing
E145 Specification for Gravity-Convection and Forced-Ventilation Ovens
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 91.100.15 (Mineral materials and products)
UNSPSC Code 30121900(Soil stabilizers and reinforcing materials)
ASTM D5993-14, Standard Test Method for Measuring Mass Per Unit of Geosynthetic Clay Liners, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top