1、Designation:D3639/D3639M92(Reapproved 2019)Standard Test Method forClassification of Asbestos by Quebec Standard Test1This standard is issued under the fixed designation D3639/D3639M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,th
2、e 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 test method covers a procedure for dry classifica-tion of chrysotile asbestos fiber by length distribution.1
3、.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 used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the s
4、tandard.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 other precautions,when working with asbestos-cement products,minimize the dust that results.For informa-t
5、ion 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 concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish ap
6、pro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.See for a specific hazard warning.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in th
7、e 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:3D2590 Test Method for Sampling Chrysotile AsbestosD2946 Terminology for Asbesto
8、s and AsbestosCementProductsD2987 Test Method for Moisture Content of Asbestos FiberD3879 Test Method for Sampling Amphibole Asbestos(Withdrawn 2009)4E11 Specification for Woven Wire Test Sieve Cloth and TestSievesE177 Practice for Use of the Terms Precision and Bias inASTM Test Methods2.2 ASTM Adju
9、nct:Quebec Asbestos Testing Machine Construction and Opera-tion Instructions52.3 Quebec Asbestos Mining Association Documents:Quebec Standard Classificationof Chrysotile AsbestosGrades6Specifications and Drawings for Quebec Standard AsbestosTesting Machine Model No.263.Terminology3.1 DefinitionsRefe
10、r to Terminology D2946 and the Ter-minology Section of Test Method D2590.4.Summary of Test Method4.1 A 454-g 16-oz sample is sifted through three progres-sively finer screens,and the mass fraction retained by each isdetermined,and reported in ounces(1 oz=28.35 g).1This test method is under the juris
11、diction of ASTM Committee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved April 15,2019.Published May 2019.Originallyapproved in 1977.Last previous edition approved in 2011 as D36
12、39 92(2011)1.DOI:10.1520/D3639_D3639M-92R19.2Available 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
13、onthe ASTM website.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from ASTM International Headquarters.Order Adjunct No.ADJD3639.Original adjunct produced in 1977.6Available from the Quebec Asbestos Mining Association,1130 Sherbrooke St.West,Montreal,Q
14、C Canada H3A 2M8.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 theDevelopm
15、ent of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 5.Significance and Use5.1 The Quebec Standard Testing Machine classifies milledchrysotile asbestos grades according to the mass fractionsretained on each scree
16、n.Specimens that are not properlyconditioned prior to testing or that have excessive moisturecontent(above 3%in accordance with Method D2987),orboth,may give erratic and false results.5.2 Some amphibole asbestos fibers may be classified bythis test method but a standard classification for these has notbeen established.6.Apparatus6.1 Quebec Standard Testing Machine,Model No.2,con-forming to,and operated in accordance with,the specifica-tions7(Fig.1).NOTE1At some locations the Model 3 is in use,di