1、Designation:D452/D452M91(Reapproved 2013)1Standard Test Method forSieve Analysis of Surfacing for Asphalt Roofing Products1This standard is issued under the fixed designation D452/D452M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision
2、,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEUnits information was editorially corrected in July 2013.1.Scope1.1 This test method covers the determination of th
3、e particlesize distribution of surfacing material,other than mineralgranules,such as sand,mica,talc,or other powdered or flakymineral particles,used on both sides of“smooth”roll roofingand on the reverse side of asphalt shingles and mineral-surfaced roll roofing.1.2 The values stated in either SI un
4、its 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 standard.1.3 This standard does not p
5、urport 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 determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E11
6、Specification for Woven Wire Test Sieve Cloth and TestSieves3.Summary of Test Method3.1 A weighed sample of surfacing material is separatedthrough a series of sieves of progressively smaller openings forthe determination with particle size distribution.4.Significance and Use4.1 This test method is u
7、sed to determine the grading ofmaterials used as surfacing.The results are used to determinecompliance of the particle size distribution with applicablespecification requirements.5.Apparatus5.1 SievesAset of the sieves listed in Table 1,conformingto Specification E11.For routine testing,the group of
8、 sievesactually used shall include only those appropriate for thematerial being graded.Coarser or finer sieves,on which lessthan 0.05 mass%of the specimen would be found aftersieving,need not be included in the group.NOTE1For relatively coarse or flaky materials,such as coarse mica,sieves from 1.18-
9、mm to 212-m(Nos.16 to 70)inclusive,will usually befound suitable.For finer surfacing materials,such as fine mica or talcflour,sieves from 600 to 75-m(Nos.30 to 200)inclusive,will usuallygive a satisfactory sieve analysis.5.2 Sieve ShakerA mechanically operated sieve shaker,which produces a uniform r
10、otary motion and tapping actionwith 140 to 160 taps per minute.The sieve shaker shall be fittedwith a hard maple plug to receive the impact of the tappingdevice.The entire apparatus shall be rigidly mounted bybolting to a solid foundation,preferably concrete.5.3 Sampling SplitterAriffle sampler with
11、 9.5 or 12.7-mm38or12-in.divisions,for reducing the sample to the specimenrequired for sieve analysis.5.4 Oven,capable of maintaining 105C 221F.5.5 BalanceA laboratory balance sensitive to 0.1 g.6.Sampling6.1 Each shipment of surfacing of a single type shall beconsidered a unit for sampling.If a shi
12、pment contains morethan one type,the entire quantity of each type in the vehicleshall be considered a unit for sampling.6.2 Take the sample of surfacing shipped in bulk from thechute or conveyor while the vehicle is being loaded orunloaded.The ideal place is just where the material drops fromthe chu
13、te or belt.Collect equal portions from the full width andthickness of the stream at regular intervals,with such fre-quency that a minimum of five samples will be taken and thetotal mass of the sample will be not less than 7.3 kg 16 lb.Donot allow the sampling receptacle to overflow under any1This te
14、st method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.02 on SteepRoofing Products and Assemblies.Current edition approved July 1,2013.Published July 2013.Originally approvedin 1937.Last previous edition approved in 2
15、008 as D452 91(2008).DOI:10.1520/D0452_D0452M-91R13E01.2For 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.Copyright A
16、STM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 circumstances.Overflow would tend to reject a higher propor-tion of the large particles than the small ones,and a represen-tative sample would not be obtained.The sample should notinclude the initial material discharged from the chute orconveyor.6.3 Take the sample from a shipment of surfacing shipped inbags,selected at random and equal in number to the cube rootof the total number of bags in the v
