1、Designation:D1573/D1573M95(Reapproved 2009)1Standard Test Method forHeat Aging of Asbestos Textiles1This standard is issued under the fixed designation D1573/D1573M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last rev
2、ision.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 corrected editorially in March 2010.1.Scope1.1 This test method covers the heat aging of asbestostextiles.It may be
3、 used to determine the resistance to thedeterioration of tensile strength at temperatures up to 450C800F.1.2 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 us
4、ed independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and for those with whom they come into contact.In addition to
5、 other precautions,when working with asbestos-cement products,minimize the dust that results.For informa-tion on the safe use of chrysoltile asbestos,refer to“Safe Useof Chrysotile Asbestos:A Manual on Preventive and ControlMeasures.”21.4 This standard does not purport to address all of thesafety co
6、ncerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specific safetyhazard,see 1.3.2.Referenced Documents2.1 ASTM Standards:3D123 Te
7、rminology Relating to TextilesD1571 Specification for Woven Asbestos ClothD1682 Test Method for Breaking Load and Elongation ofTextile Fabric(Withdrawn 1992)4D2946 Terminology for Asbestos and AsbestosCementProducts3.Terminology3.1 For textile terms,refer to Terminology D123.Forasbestos terms,refer
8、to Terminology D2946.4.Significance and Use4.1 This test method covers the evaluation of asbestostextiles with regard to(1)quality and(2)elevated temperatureserviceability characteristics.Since asbestos textiles are usu-ally composed of blends of asbestos with cotton or otherorganic carrier fibers,t
9、he latter being present in amounts up to25%,temperatures above 150C 300F will promote thedegradation of the cotton content and will reduce the structuralreinforcement derived therefrom.In the higher grade asbestostextiles,wherein little or no carrier fibers are used and in whichthe longer asbestos f
10、ibers are necessary if a satisfactory yarn isto be produced,the degradation in strength resulting fromheat-aging up to 540C 1000F is low.In the case of thelower grade asbestos textiles,however,wherein amounts from15 to 25%carrier fibers are incorporated,asbestos fibershaving shorter lengths may be u
11、tilized.Under the relativelylow service temperatures to which such materials may besubjected,neither the cotton nor the cloth properties are greatlyaffected.However,the strength-imparting influence of thecarrier fibers is reduced at elevated temperatures and theentwining properties of the shorter as
12、bestos fibers primarilyserve to establish the resultant tensile strength and otherphysical properties of the textile.In view of this,elevatedtemperature tests may serve to indicate the asbestos fiber gradeor quality that may be used in a textile construction.4.2 Another use and perhaps more practica
13、l application forthe information to be derived from elevated temperaturestudies is the revelation of the ability of a subject textile towithstand known elevated temperature service conditions.Itwill be appreciated that temperature alone may not be the only1This test method is under the jurisdiction
14、of ASTM Committee C17 onFiber-Reinforced Cement Productsand is the direct responsibility of C17.03 onAsbestos-Cement Sheet Products and Accessories.Current edition approved Nov.1,2009.Published March 2010.Originallyapproved in 1958.Last previous edition approved in 2004 as D1573 95(2004)1.DOI:10.152
15、0/D1573_D1573M-95R09E01.2Available from The Asbestos Institute,http:/ 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.4
16、The 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 States1 degratory influence in the destruction of such materials;however,under normal operating conditions,high tempera-tures are usually the dominating factors in such degradation.The results obtained through such investigations therefore maybe interpreted in terms of elevated temperature serviceability.5.Apparat
