1、Designation:D 3879 91(Reapproved 1999)Standard Test Method forSampling Amphibole Asbestos1This standard is issued under the fixed designation D 3879;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number i
2、n parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method describes the procedure for taking acomposite sample or a master composite sample(at the mine,at the factory,or from a consignmen
3、t)from a lot of commercialmilled amphibole fibers,conditioning the sample,and reducingit in quantity so as to provide a series of relatively small testspecimens of loose asbestos fiber,each of which may beregarded as representative of the lot.(See Appendix X1 forsampling strategy.)1.2 This test meth
4、od is suitable for taking test specimens ofamphibole asbestos for the following test methods:C 1119,C 1120,C 1121,C 1122,C 1123,C 1124,C 1125,C 1162,D 1118,D 2589,D 2752,D 2947,D 2985,D 2987,D 3639,D 3752,and D 3880.1.3 For sampling chrysotile asbestos,use Method D 2590.1.4 The values stated in SI u
5、nits are to be regarded as thestandard.The values given in parentheses are for informationonly.1.5 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 pract
6、ices and determine the applica-bility of regulatory limitations prior to use.See 7.1.1 for aspecific hazard warning.2.Referenced Documents2.1 ASTM Standards:C 1119 Test Method for Vacuum Drainage of Asbestos-Cement Mixes2C 1120 Test Method for Wash Test of Asbestos2C 1121 Test Method for Turner and
7、Newall(T and N)Wet-Length Classification of Asbestos2C 1122 Test Method for Wet Volume of Asbestos2C 1123 Test Method for Compressibility and Recovery ofAsbestos2C 1124 Test Method for Kerosene Retention of Asbestos2C 1125 Test Method for Penetration Index of Asbestos2C 1162 Test Method for Loose De
8、nsity of Asbestos2D 1118 Test Method for Magnetic Rating of Asbestos Fiberand Products2D 2589 Test Method for McNett Wet Classification ofAsbestos Fibers2D 2590 Test Method of Sampling Chrysotile Asbestos2D 2752 Test Methods for Air Permeability of AsbestosFibers2D 2946 Terminology Relating to Asbes
9、tos and Asbestos-Cement Products2D 2947 Test Method for Screen Analysis of Asbestos Fi-bers2D 2985 Test Method for Color of Asbestos2D 2987 Test Method for Moisture Content of AsbestosFiber2D 3639 Test Method for Classification of Asbestos Fibersby Quebec Standard Test2D 3752 Test Method for Strengt
10、h Imparted byAsbestos to aCement Matrix2D 3880 Test Method for Asbestos Strength Units23.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 accessible baga bag(in a pile of bags of asbestosfiber)of which at least one side or one end is fully exposed.3.1.2 accessible surfacein a pile
11、 of bags of asbestos fiber,a side(of the pile)in which all the bags are accessible bags.3.1.3 amphibole asbestos,nasbestiform amphibole sili-cate minerals including the orthorhombic anthophyllite seriesand the monoclinic cummingtonite grunerite asbestos(amosite)series,the tremolite-actinolite series
12、,and the alkaliamphibole riebeckite asbestos(crocidolite)series amongothers.The amphiboles contain essential(OH)groups in theirstructure,and the Si:O ratio is 4:11.A considerable amount ofelemental substitution can take place in these varieties ofasbestos.The crystal structures are composed of strip
13、s orribbons of linked polyhedra that join to form fibrils.Theindividual strips are made up from three components;these aretwo double chains of linked(Si,Al)O4tetrahedra and a stripof linked MgO6,FeO6or AlO6octahedra(see Tables 1 andTables 2 in Terminology D 2946).3.1.4 bagany quantity of asbestos fi
14、ber corresponding toone particular grade that is packed in a suitable container.NOTE1In the asbestos industry the typical quantity contained in a bagis 45 kg(100 lb approximately).1This test method is under the jurisdiction of ASTM Committee C-17 onFiber-Reinforced Cement Productsand is the direct r
15、esponsibility of SubcommitteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved Oct.15,1991.Published December 1991.Originallypublished as D 3879 80.Last previous edition D 3879 90.2Annual Book of ASTM Standards,Vol 04.05.1AMERICAN SOCIETY FOR TESTING AND MATERIALS100
16、Barr Harbor Dr.,West Conshohocken,PA 19428Reprinted from the Annual Book of ASTM Standards.Copyright ASTM3.1.5 composite samplea set of unit samples of asbestosfiber(drawn systematically or at random)taken from a lot,comprising not less than 2 and not more than 200 bags,for usein the laboratory as a test sample,that is,as a source of testspecimens.3.1.6 conditioningthe process by which the fiber is putinto a consistent condition to be tested.3.1.7 contaminantsany foreign matter(other than associ
