ASTM D140 D140M-2014 Standard Practice for Sampling Bituminous Materials《抽样沥青材料的标准实施规程》.pdf

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1、Designation: D140/D140M 14Standard Practice forSampling Bituminous Materials1This standard is issued under the fixed designation D140/D140M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in par

2、entheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This practice applies to the sampling of bituminousmaterials a

3、t points of manufacture, storage, or delivery.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 independently of the other. Combiningvalues from the

4、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 and health practices and determine the applica-bi

5、lity of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D346 Practice for Collection and Preparation of CokeSamples for Laboratory Analysis3. Significance and Use3.1 Sampling is as important as testing, and precautionsshall be taken to obtain samples to show the true n

6、ature andcondition of the materials.3.2 Samples are taken for either of the following twopurposes:3.2.1 To represent as nearly as possible an average of thebulk of the materials sampled, or3.2.2 To ascertain the maximum variation in characteristicswhich the material possesses.4. Precautions4.1 Becau

7、se of the numerous types and grades of bitumi-nous materials that are alternately shipped and stored in thesame or similar containers, the opportunity for contaminatingthese containers with residues, precipitates, or cleaning sol-vents is ever present. Numerous opportunities also exist forobtaining

8、samples which are not strictly representative of thematerial or are contaminated after removal. Therefore, it isincumbent upon the producer, transporter, user, and sampler toexercise continuous precaution in the sampling and handling ofthese materials.5. Selection of Samples5.1 Whenever practicable,

9、 bituminous materials shall besampled at the point of manufacture or storage, and at suchtime as to allow the tests controlling acceptance or rejection tobe made in advance of shipment.5.2 When the samples cannot be taken at the point ofmanufacture or storage, they shall be taken from the shipmentim

10、mediately upon delivery.6. Size of Samples6.1 The sample size of liquid materials shall be as follows:6.1.1 For routine laboratory examination and from barrelsor drums, 500 mL to 1 L 1 pt to 1 qt.6.1.2 From bulk storage, 4 L 1 gal.6.1.3 For emulsified products, 1 L 1 qt.6.2 The sample size of semiso

11、lid or solid materials shall beas follows:6.2.1 From barrels, drums, or cakes, 1 to 2 kg 2 to 3 lb.6.2.2 From crushed or powdered material in bulk or bags, 1to 2 kg 2 to 3 lb.7. Containers7.1 Type of Containers:7.1.1 Containers for liquid bituminous materials, exceptemulsions, shall be wide-mouth ca

12、ns with lined screw caps ortriple-seal friction-top cans.7.1.2 Containers for emulsified bituminous materials shallbe wide-mouth jars or bottles made of plastic, or wide-mouthplastic-lined cans with lined screw caps, or plastic-linedtriple-seal friction-top cans.1This practice is under the jurisdict

13、ion of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.30 onMethods of Sampling.Current edition approved June 1, 2014. Published June 2014. Originallyapproved in 1922. Last previous edition approved in 2009 as D140/D140M 09.DOI: 10.1520/D0140_D0140

14、M-14.2For 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 ASTM International, 100 Barr Harbor Drive, PO

15、Box C700, West Conshohocken, PA 19428-2959. United States17.1.3 Containers for crushed or powdered bituminous ma-terials shall be triple-seal friction-top cans or plastic sacksplaced in other containers suitable for handling.7.2 Size of ContainersThe size of the container shallcorrespond to the requ

16、ired sample size.8. Protection and Preservation of Samples8.1 Sample containers shall be new. They shall not bewashed or rinsed, or wiped with an oily cloth. If they containevidence of solder flux, or if they are not clean and dry, theyshall not be used. Top and container shall fit together tightly.

17、8.2 Care shall be taken to prevent the sample from becom-ing contaminated. Immediately after filling, the container shallbe tightly sealed.8.3 The filled sample container shall not be submerged insolvent, nor shall it be wiped with a solvent saturated cloth. Ifcleaning is necessary use a clean dry c

18、loth.8.4 Samples of emulsified asphalt shall be protected fromfreezing by correct packaging.NOTE 1When sampling emulsified asphalt, care should be taken notto sample material under pressure as such resultant velocities tend to causeair entrapment which could result in erroneous test results. Any vis

19、ualbubbling of the material is one indication air has been entrapped. Inaddition, the sampling container should be completely filled to minimizea skin formation at the air-emulsion interface.8.5 Samples shall not be transferred from one container toanother except where required by the sampling proce

20、dure.8.6 Immediately after filling, sealing, and cleaning, thesampling containers shall be properly marked for identificationwith a suitable marking pencil on the container itself, and noton the lid. Labels or tags also may be used for identification ifthey can be securely fastened to the container

21、in such a manneras to ensure that they will not be lost in transit. Labels or tagsshall not be attached to containers by using the lids to securethem. All identification materials shall maintain their integrityat temperatures up to 200C 390F.8.6.1 The labeling of the sample must, at a minimum,includ

22、e an identification of the product or material type and thedate of sampling.9. Sampling at Place of Manufacture9.1 Vertical Tanks Not Capable of Being Agitated (LiquidMaterials or Materials Made Liquid by Heating) (800 m35000 bbl or more capacity)Three sampling methods arerecommended (Note 2):9.1.1

23、Sampling-Valve MethodValves shall be located, witheasy and safe access provided, on the side of the tank with thefirst in the top third of the tank, but no higher than1m3ftfrom the top; the second in the middle third of the tank; and thethird in the bottom third of the tank, but no lower than 1.1 m3

24、 ft from the bottom. A recommended design of the samplingvalve is shown in Fig. 1.9.1.1.1 A minimum of 4 L 1 gal of the product shall bedrawn from each sample valve and discarded before taking thesample for test, and9.1.1.2 500 mL to 4 L 1 pt to 1 gal shall be drawn fromeach sample valve for test.9.

25、1.2 Thief Sampler Method (not suitable for asphaltcements)Samples shall be taken in the top, middle, and lowersections at levels indicated in 9.1.1, of the tank by lowering athief sampler into the material. A satisfactory type withinstructions for use is shown in Fig. 2.NOTE 2Most bituminous materia

26、ls in the liquid state are of suchviscous and adhesive character that, after normal emptying of a containerby pouring, the container retains enough material to cause significantcontamination of any second samples secured before the container wasthoroughly cleaned. The aforementioned properties of bi

27、tuminous mate-rials also make container cleaning a difficult, tedious, and time-consumingtask.NOTE 3The thief sampler described in Fig. 2 may be used forrepetitive sampling because significant sample contamination by previouscontents is avoided by the self-cleaning action provided by the passage ofm

28、aterial through the tube-shaped thief sampler which is open at both ends.The practice of raising and lowering the sampler 3 or 4 times through adistance of a metre (several feet) at the sampling depth is recommended.9.1.3 Throw-Away Container MethodSamples shall betaken at top, middle, and lower lev

29、els by lowering into thematerial a container in a suitable weighted holding device. Theessential feature of the method is to use a clean container totake the sample, pour this sample into another clean container,and throw away the container used to take the sample from thetank. A satisfactory type w

30、ith instructions on how to use thedevice is shown in Fig. 3.9.1.4 The three samples from bulk storage tanks may betested separately for consistency to detect stratification. Theymay be combined, thoroughly mixed, and a 500-mL to 4-LFIG. 1 Typical Submerged Sampling DeviceD140/D140M 1421-pt to 1-gal

31、sample may be taken for other tests that may berequired for determining average characteristics of the mate-rial.9.2 Bulk Storage Tanks (Liquid Materials or MaterialsMade Liquid by Heating) Equipped with Mechanical AgitatorsWhen the tank is equipped with operating mechanicalagitators which, by obser

32、vation through the sampling orinspection hatch, are performing adequate mixing of the tankcontents, a single sample taken by any of the methodsdescribed in 9.1.1, 9.1.2,or9.1.3 will be satisfactory to use fortest purposes.10. Sampling from Tank Cars, Vehicle Tanks, DistributorTrucks or Recirculating

33、 Storage Tanks10.1 The sample may be taken from the sample valve or tapif the tanks are provided with them. When such samplingdevices are required, they are to be built into the tank itself. Asampling device of this type is shown in Fig. 1. Before thesample is taken, 4 L 1 gal shall be drawn from th

34、e samplevalve and discarded.10.2 Samples of liquid materials and materials made liquidby heating may be taken by the dip method using a cleanwide-mouth or friction-top can in a suitable holder as shown inFig. 4. A clean container must be used to take each sample, andthe material sampled shall then b

35、e transferred to another newand clean container for retention or testing sample.10.3 A detachable fitting, similar in design to the one shownin Fig. 5 may be inserted in the discharge line. Before thesample is taken 4 L 1 gal shall be drawn from this samplingvalve and discarded.11. Sampling from Tan

36、kers and Barges11.1 For liquid materials (including all cut-backs madeliquid by heating) top, middle, and lower samples shall betaken using the methods as described in 9.1.2 and 9.1.3.11.2 For all other materials made liquid by heating, a topsample only shall be taken by the dip, thief, or throw-awa

37、ycontainer method.12. Sampling from Pipe Lines During Loading orUnloading12.1 When tankers and barges are being loaded or unloadedsamples may conveniently be taken from the pipe line throughwhich the material is flowing by insertion of a sampling pipeinto a rising section of the pipe line on the dis

38、charge side of thepump or in a completely filled line in which gravity creates thematerials flow.Asuitable in-line sampling pipe is shown in Fig.5. The sampling pipe shall be not more than one eighth thediameter of the pipe line and its opening should be turned toface the flow of the liquid. This pi

39、pe shall be provided with avalve or plug cock and shall discharge into a sample receiver.At least three 4-L 1-gal samples shall be taken at uniformintervals throughout the entire loading or unloading. At thecompletion of the loading or unloading, the individual 4-L1-gal samples shall be combined, th

40、oroughly mixed withoutaltering its characteristics, and a 4-L 1-gal sample takentherefrom.12.2 When sampling tankers and barges 4000 m325 000bbl, or less, capacity, at least five 4-L 1-gal samples shall betaken at uniform intervals throughout the entire loading orunloading (4000 m325 000 bbl), or la

41、rger, capacity requiresat least ten 4-L 1-gal samples. At completion of the loadingor unloading, the individual 4-L 1-gal samples shall becombined, thoroughly mixed in a manner designed to not alterits characteristics, and a 4-L 1-gal sample taken therefrom.13. Sampling from Drums or Barrels13.1 Aft

42、er thorough mixing, samples of liquid bituminousmaterial from barrels or drums shall be secured by tube or thiefsampling by taking 1 L 1 qt of material from packagesselected at random according to Section 14.14. Sampling Semisolid or Uncrushed Solid Materials14.1 Drums, Barrels, Cartons, and BagsWhe

43、re the lot ofmaterial to be sampled is obviously from a single run or batchof the producer, one package shall be selected at random andsampled as described below. Where the lot of material to besampled is not obviously from a single run or batch of theproducer, or where the single samples selected a

44、s describedabove fails on test to conform to the requirements of thespecifications, a number of packages shall be selected atrandom and equivalent to the cube root of the total number ofpackages in the lot. The following table is given, showing thenumber of samples to be selected for shipments of va

45、rioussizes.NOTE 1This type sampler is lowered into the tank with bottom valveopen (there is no top closure). When the desired depth is reached, thelowering chain is given a snap tug which closes the bottom valve. Thesampler is then withdrawn from the tank and the contents transferred tothe sample co

46、ntainer. This sampler may be used for repetitive sampling inthe same tank.FIG. 2 Thief SamplerD140/D140M 143Packages in Shipment Packages Selected2to8 29to27 328 to 64 465 to 125 5126 to 216 6217 to 343 7344 to 512 8513 to 729 9730 to 1000 101001 to 1331 11Samples shall be taken from at least 75 mm

47、3 in. below thesurface and at least 75 mm 3 in. from the side of thecontainer. If the material is hard enough to shatter, use a cleanhatchet. If the material is soft, use a broad, stiff putty knife.When more than one package in a lot is sampled, eachindividual sample shall have a mass of not less th

48、an 0.1 kg0.25 lb in weight. When the lot of material is obviously froma single run or batch of the producer, all samples from the lotshall be melted and thoroughly mixed, and an average 4-L1-gal sample taken from the combined material for examina-tion. In case more than a single run or batch of the

49、producer ispresent and the batches can be clearly differentiated, a com-posite 4-L 1- gal sample shall be prepared for examinationfrom each batch. Where it is not possible to differentiatebetween the various batches, each sample shall be examinedseparately.15. Sampling Crushed or Powdered Materials15.1 Bulk Storage Solid bituminous materials in crushedfragments or powder shall be sampled in accordance withPractice D346. The gross sample shall be not less than 25 kg50 lb from which shall be selected the 1 to