ASTM D4437 D4437M-2016 Standard Practice for Non-destructive Testing (NDT) for Determining the Integrity of Seams Used in Joining Flexible Polymeric Sheet Geomembranes《测定粘结柔性聚合物土工薄.pdf
《ASTM D4437 D4437M-2016 Standard Practice for Non-destructive Testing (NDT) for Determining the Integrity of Seams Used in Joining Flexible Polymeric Sheet Geomembranes《测定粘结柔性聚合物土工薄.pdf》由会员分享,可在线阅读,更多相关《ASTM D4437 D4437M-2016 Standard Practice for Non-destructive Testing (NDT) for Determining the Integrity of Seams Used in Joining Flexible Polymeric Sheet Geomembranes《测定粘结柔性聚合物土工薄.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D4437 08 (Reapproved 2013)D4437/D4437M 16Standard Practice forNon-destructive Testing (NDT) for Determining the Integrityof Seams Used in Joining Flexible Polymeric SheetGeomembranes1This standard is issued under the fixed designation D4437;D4437/D4437M; the number immediately following
2、 the designation indicatesthe year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice is inte
3、nded for use as a summary of nondestructive quality control test methods for determining the integrityof seams used in the joining of flexible sheet materials in a geotechnical application. This practice outlines the test proceduresavailable for determining the quality of bonded seams. Any one or co
4、mbination of the test methods outlined in this practice canbe incorporated into a project specification for quality control. These test methods are applicable to manufactured flexiblepolymeric membrane linings that are scrim reinforced or nonreinforced. This practice is not applicable to destructive
5、 testing. Fordestructive 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 (orKnife), Extrusion, Solvent Bonded Seams, Bodied Solvent Bonded Seams, Adhesive Bonded or Cemented Seam
6、s, Taped Seams,Waterproofed Sewn Seams.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values given inparentheses are mathematical conversions to SI units that are provided for information only and are not considered stated in eachsystem ma
7、y not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.4 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address al
8、lof the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriatesafety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D5641D5641/D5641M Prac
9、tice for Geomembrane Seam Evaluation by Vacuum ChamberD5820 Practice for Pressurized Air Channel Evaluation of Dual Seamed GeomembranesD6365 Practice for the Nondestructive Testing of Geomembrane Seams using the Spark TestD7006 Practice for Ultrasonic Testing of GeomembranesD7177D7177/D7177M Specifi
10、cation for Air Channel Evaluation of Polyvinyl Chloride (PVC) Dual Track Seamed Geomem-branes3. Significance and Use3.1 The use of geomembranes as barrier materials to restrict liquid migration from one location to another in soil and rock, andthe large number of seam methods and types used in joini
11、ng these geomembrane sheets, has created a need for standard tests bywhich the various seams can be compared and the quality of the seam systems can be non-destructively evaluated. This practiceis intended to meet such a need.3.2 The geomembrane sheet material shall be formulated from the appropriat
12、e polymers and compounding ingredients to forma plastic or elastomer sheet material that meets all specified requirements for the end use of the product. The sheet material1 This practice is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommitte
13、e D35.10 on Geomembranes.Current edition approved May 1, 2013July 1, 2016. Published June 2013October 2016. Originally approved in 1984. Last previous edition approved in 20082013 asD4437D4437 0808.(2013). DOI: 10.1520/D4437-08R13.10.1520/D4437_D4437M-16.2 For referencedASTM standards, visit theASTM
14、 website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indi
15、cation of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be c
16、onsidered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1(reinforced or nonreinforced) shall be capable of being bonded to itself by one of the methods described in 1.2 in accordance withthe sheet manufacturers
17、recommendations and instructions.4. Nondestructive Test Methods4.1 For all test methods listed below, any and all flaws in seam construction that are detected under a given test procedure shallbe repaired. All nondestructive test methods listed are not necessarily applicable to all polymeric geomemb
18、rane materials.4.2 Air Lance TestInspect all seams for unbonded areas using an air nozzle directed on the upper seam edge and surface todetect loose edges, riffles indicating unbonded areas within the seam, or other undesirable seam conditions. Check all bondedseams using a minimum 50 psi (345 kPa)
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