1、Designation:D4830/D4830M98(Reapproved 2014)1Standard 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 th
2、e 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.1NOTEUnits information was editorially corrected in May 2014.1.Scope1.1 These test methods cover the pr
3、ocedures 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
4、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.Com
5、biningvalues from the two systems may result in non-conformancewith 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 and health practices and deter
6、mine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D76 Specification for Tensile Testing Machines for TextilesD123 Terminology Relating to TextilesD885 Test Methods for Tire Cords,Tire Cord Fabrics,andIndustrial Filament Yarns Made from Manufactu
7、redOrganic-Base FibersD1117 Guide for Evaluating Nonwoven Fabrics(Withdrawn2009)3D1776 Practice for Conditioning and Testing TextilesD4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD5035 Test Method for Breaking Force and Elongation ofTextile Fabrics(
8、Strip Method)D5729 Test Method for Thickness of Nonwoven Fabrics(Withdrawn 2008)3D5733 Test Method for Tearing Strength of NonwovenFabrics by the Trapezoid Procedure(Withdrawn 2008)3E1 Specification for ASTM Liquid-in-Glass ThermometersE18 Test Methods for Rockwell Hardness of Metallic Ma-terials3.U
9、nit Mass3.1 Determine the unit mass of the fabric using proceduresdescribed in Test Methods 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 elo
10、ngation by the cutstrip method described in Test Method D5035 with the follow-ing exceptions: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
11、of Extension)machine described in Specification D76.The machine will be set for an extension rate of 5 mm/s or 12in./min.5.2 CalculationReport textile conditions and the averagebreaking load in N/m or lbf/in.and the elongation at break inpercent.1These test methods are under the jurisdiction of ASTM
12、 Committee D08 onRoofing and Waterproofing and are the direct responsibility of SubcommitteeD08.04 on Felts,Fabrics and Bituminous Sheet Materials.Current edition approved May 1,2014.Published May 2014.Originallyapproved in 1988.Last previous edition approved in 2006 as D4830 98(2006).DOI:10.1520/D4
13、830_D4830M-98R14E01.2For 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
14、standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 Work-to-BreakThe procedure and calculation shall beas described in Test Methods D885 with the exception that theload-elongation curve will be from s
15、pecimens used in deter-mining breaking load and elongation as described in 5.1 and5.2.6.Trapezoid Tearing Strength6.1 Determine trapezoid tearing strength of the fabric fol-lowing procedures described in Test Method D5733.7.Puncture Strength7.1 Scope:7.1.1 This test method is used to measure the pun
16、cturestrength of thermoplastic fabrics used in roofing.7.1.2 This procedure is applicable to conditioned fabrics.7.2 Summary of Method:7.2.1 A specimen of the fabric is clamped without tensionbetween grooved,circular plates of a ring clamp attachmentsecured in a tensile testing machine.A force is exerted againstthe center of the specimen by a solid steel rod attached to theload indicator until rupture occurs.7.3 Significance and Use:7.3.1 Puncture failures are recognized in the roofing indus-try
