1、Designation:D4074/D4074M11(Reapproved 2015)Standard Test Method forBitumen and Aggregate Content of Bitumen-AggregateMixtures From Roofing Samples1This standard is issued under the fixed designation D4074/D4074M;the number immediately following the designation indicates theyear of original adoption
2、or,in the 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.1.Scope1.1 This test method covers the determination of the bitu-men content of adhered aggrega
3、te surfacing on a roof,and theapproximate mass per unit area of the flood coat and adheredaggregate.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 used in
4、dependently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 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 an
5、d health practices and determine the applica-bility and regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D71 Test Method for Relative Density of Solid Pitch andAsphalt(Displacement Method)D2829 Practice for Sampling and Analysis of ExistingBuilt-Up Roof Systems3.Summary
6、of Test Method3.1 The proportions of bitumen and aggregate in a mixtureare determined from their relative densities and the relativedensity of their mixture.4.Significance and Use4.1 This test method offers a convenient alternative tosolvent extraction for the approximate determination of top-coatin
7、g bitumen and adhered aggregate in roofing samples,particularly when the bitumen is coal tar pitch.5.Apparatus5.1 Beaker,500-mL minimum capacity,without a pourspout.35.2 Glass Cover Plate,127 by 127 by 3 mm 5 by 5 by 0.12in.5.3 Balance,1000 6 0.1-g capacity.6.Materials6.1 Isopropyl Alcohol,(CH3)2CHO
8、H,commercial grade.6.2 Paper Cups,paraffin-coated,61 mm 2.4 in.in diam-eter by 76 in.3 mm high,150-mL 5-oz capacity.7.Sampling7.1 Obtain samples in the field in accordance with PracticeD2829.8.Procedure8.1 Cut a 100-mm 558-in.square specimen from theroofing sample and collect any associated loose,bi
9、tumen-freeaggregate in a tared paper cup.8.2 Add additional loose,bitumen-free aggregate to the cupfrom the remaining sample,if necessary,to obtain a 100 to200-g specimen of the aggregate.Weigh the aggregate to thenearest 0.1 g and record as Ma.8.3 Place the roofing specimen on aluminum foil or rele
10、asepaper and carefully remove the adhered aggregate and topcoating with a hot knife or scraper without damaging the topfelt.NOTE1This will usually leave 200 to 400 g/m24 to 8 lb/100 ft2 ofbitumen on the surface of the roofing felt.1This test method is under the jurisdiction ofASTM Committee D08 on R
11、oofingand Waterproofing and is the direct responsibility of Subcommittee D08.20 onRoofing Membrane Systems.Current edition approved Nov.1,2015.Published November 2015.Originallyapproved in 1985.Last previous edition approved in 2011 as D4074/D4074M 11.DOI:10.1520/D4074_D4074M-11R15.2For referenced A
12、STM 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 sole source of supply of the beaker,Kimble Chase,part#14020600Kimax 600 mL wit
13、hout spout,known to the committee at this time is FisherScientific,1022 Spruce St.,P.O.Box 1502,Vineland,NJ 083621502.If you areaware of alternative suppliers,please provide this information to ASTM Interna-tional Headquarters.Your comments will receive careful consideration at a meetingof the respo
14、nsible technical committee,1which you may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.4 Collect the adhered aggregate and top coating removedin 8.3 in a tared paper cup and add any associated loose,bitumen-coated aggregate.We
15、igh to the nearest 0.1 g andrecord as Mm.8.5 Overfill the clean 500-mL beaker with isopropyl alcoholand carefully slide the glass cover plate over the top so as toexclude air.Blot the excess alcohol from the exterior of thebeaker.Weigh the assembly to the nearest 0.1 g and record asT.8.6 Remove the
16、glass cover plate and place the aggregatespecimen from 8.2 in the beaker.Again,overfill the beakerwith alcohol,and carefully replace the cover plate.Blot theexcess alcohol from the exterior of the beaker.Weigh theassembly to the nearest 0.1 g and record as Wa.8.7 Discard the contents of the beaker and rinse withalcohol.Place the adhered aggregate and top coating specimenfrom 8.4 in the beaker.Overfill with alcohol,replace the coverplate,and blot the exterior as before.Weigh the assembly to thene
