ASTM_D_4830_-_D_4830M_-_98_2021.pdf

Designation:D4830/D4830M98(Reapproved 2021)Standard Test Methods forCharacterizing Thermoplastic Fabrics Used in Roofing andWaterproofing1This standard is issued under the fixed designation D4830/D4830M;the number immediately following the designation indicates theyear 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 These test methods cover the procedures for character-izing thermoplastic fabrics(for example polyester,polyamide,polypropylene,and so forth)used in prefabricated roofing andwaterproofing membranes.1.2 Procedures appear in the following order:SectionUnit Mass3Thickness4Breaking Load,Elongation,and Work-to-Break5Trapezoid Tearing Strength6Puncture Strength7Static Heat Stability8Dynamic Heat Stability91.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D76/D76M Specification for Tensile Testing Machines forTextilesD123 Terminology Relating to TextilesD885/D885M Test Methods for Tire Cords,Tire CordFabrics,and Industrial Filament Yarns Made from Manu-factured Organic-Base FibersD1117 Guide for Evaluating Nonwoven Fabrics(Withdrawn2009)3D1776/D1776M Practice for Conditioning and Testing Tex-tilesD4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD5035 Test Method for Breaking Force and Elongation ofTextile Fabrics(Strip Method)D5729 Test Method for Thickness of Nonwoven Fabrics(Withdrawn 2008)3D5733 Test Method for Tearing Strength of NonwovenFabrics by the Trapezoid Procedure(Withdrawn 2008)3E1 Specification for ASTM Liquid-in-Glass ThermometersE18 Test Methods for Rockwell Hardness of Metallic Ma-terials3.Unit Mass3.1 Determine the unit mass of the fabric using proceduresdescribed in Guide D1117.Report in g/m2or oz/yd2.4.Thickness4.1 Determine fabric thickness following procedures de-scribed in Test Method D5729.5.Breaking Load,Elongation,and Work-to-Break5.1 Determine the breaking load and elongation by the cutstrip method described in Test Method D5035 with the follow-ing exceptions:1These test methods are under the jurisdiction of ASTM Committee D08 onRoofing and Waterproofing and are the direct responsibility of SubcommitteeD08.04 on Felts,Fabrics and Bituminous Sheet Materials.Current edition approved Nov.15,2021.Published November 2021.Originallyapproved in 1988.Last previous edition approved in 2014 as D4830/D4830M 98(2014)1.DOI:10.1520/D4830_D4830M-98R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1?5.1.1 Test SpecimensCut each specimen 51 6 1 mm 2.06 0.05 in.wide and 203 6 1 mm 8.0 6 0.05 in.long.Thegauge length shall be 152 6 1 mm 6.0 6 0.05 in.5.1.2 ApparatusThe apparatus shall be a CRE(constantrate of extension)machine described in Specification D76/D76M.The machine will be set for an extension rate of 5 mm/sor 12 in./min.5.2 CalculationReport textile conditions and the averagebreaking load in N/m or lbf/in.and the elongation at break inpercent.5.3 Work-to-BreakThe procedure and calculation shall beas described in Test Methods D885/D885M,with the exceptionthat the load-elongation curve will be from specimens used indetermining breaking load and elongation as described in 5.1and 5.2.6.Trapezoid Tearing Strength6.1 Determine trapezoid tearing strength of the fabric fol-lowing pr