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Standard Practice for Non-destructive Testing (NDT) for Determining the Integrity of Seams Used in Joining Flexible Polymeric Sheet Geomembranes
Automatische name übersetzung:
Standard Praxis für die zerstörungsfreie Prüfung (ZfP ) zur Bestimmung der Integrität der Nähte in Füge Flexible Polymerbahn Dichtungsbahnen Gebraucht
NORM herausgegeben am 1.4.2008
Bezeichnung normen: ASTM D4437-08
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.4.2008
SKU: NS-27207
Zahl der Seiten: 2
Gewicht ca.: 6 g (0.01 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
Adhesive bonds, Bonded seams, Destructive testing--soil/rock, Field testing--geosynthetics, Flexible barrier materials, Geomembranes, Liquids--geosynthetic/geothermal applications, Nondestructive evaluation (NDE)--soil/rock/related materials, Polymeric geomembranes, Rock materials/properties/analysis, Seams, Soil, Solvent-bonded seams, Taped seams, Thermally-bonded seams, Waterproofed seams, ICS Number Code 83.140.10 (Films and sheets), 91.100.50 (Binders. Sealing materials)
Significance and Use | ||||||||||
The use of geomembranes as barrier materials to restrict liquid migration from one location to another in soil and rock, and the large number of seam methods and types used in joining these geomembrane sheets, has created a need for standard tests by which the various seams can be compared and the quality of the seam systems can be non-destructively evaluated. This practice is intended to meet such a need. The geomembrane sheet material shall be formulated from the appropriate polymers and compounding ingredients to form a plastic or elastomer sheet material that meets all specified requirements for the end use of the product. The sheet material (reinforced or nonreinforced) shall be capable of being bonded to itself by one of the methods described in 1.2 in accordance with the sheet manufacturer's recommendations and instructions. |
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1. Scope | ||||||||||
1.1 This practice is intended for use as a summary of nondestructive quality control test methods for determining the integrity of seams used in the joining of flexible sheet materials in a geotechnical application. This practice outlines the test procedures available for determining the quality of bonded seams. Any one or combination of the test methods outlined in this practice can be incorporated into a project specification for quality control. These test methods are applicable to manufactured flexible polymeric membrane linings that are scrim reinforced or nonreinforced. This practice is not applicable to destructive testing. For destructive test methods look at other ASTM Standards and Practices. 1.2 The types of seams covered by this practice include the following: Thermally Bonded Seams, Hot Air, Hot Wedge (or Knife), Extrusion, Solvent Bonded Seams, Bodied Solvent Bonded Seams, Adhesive Bonded or Cemented Seams, Taped Seams, Waterproofed Sewn Seams. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. No other units of measurement are included in this standard. 1.4 This standard may involve hazardous materials, operations, and equipment. 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. |
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2. Referenced Documents | ||||||||||
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