1、Designation: D 6136 97 (Reapproved 2004)e1Standard Test Method forKerosine Number of Unsaturated (Dry) Felt by VacuumMethod1This standard is issued under the fixed designation D 6136; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTEA warning note in 9.5 was moved into the text editorially in May 2004.1. Scope1.1 This test method covers the
3、determination of the relativesaturating capacity of unsaturated (dry) felt papers used inroofing.1.2 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
4、practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 585 Practice for Sampling and Accepting a Single Lot ofPaper, Paperboard, Fiberboard, and Related ProductD 1298 Practice for Density, Relative Density (SpecificGravity), or
5、API Gravity of Crude Petroleum and LiquidPetroleum Products by Hydrometer MethodD 3699 Specification for Kerosine3. Summary of Test Method3.1 The kerosine number of unsaturated (dry) felt is com-puted from the weight of a kerosine of known specific gravityretained by the felt after displacement of t
6、he air from interiorvoids. It is the millilitres of kerosine held /100 g of felt, andthus, is a measure of the quantity of saturant that a given feltwill absorb.4. Significance and Use4.1 The ability to absorb kerosine is an indication of theability to absorb hot asphalt. The kerosine number is used
7、 incalculating saturation efficiency.5. Apparatus5.1 Glass Vessel, approximately 1500 mL capacity, forsoaking specimens of felt in kerosine, under vacuum.5.2 Vacuum Pump, capable of reaching and maintaining avacuum of at least 700 mm Hg in the glass vessel.5.3 Lightweight Glass or Metal Weighing Con
8、tainer, withtightly fitting cover, 60 by 140 mm (2.5 by 5.5 in.) or larger, tocontain felt strips in a horizontal position without bending ordistortion.5.4 Drying Oven, with dimensions at least 300 by 300 by300 mm (12 by 12 by 12 in.).5.5 Other ApparatusDesiccator, wire hook, and if neces-sary, a pu
9、nch to make a small hole in a corner of the specimensafter they are cut.6. Materials6.1 Water-White Kerosine, complying to the requirements ofSpecification D 3699 and having a specific gravity of 0.800 60.025 at 25C, as determined in accordance with PracticeD 1298.7. Sampling7.1 Obtain a sample of t
10、he felt in accordance with PracticeD 585.8. Test Specimen8.1 From each test unit of the sample cut two sets of six testspecimen strips, each strip measuring 51 by 127 6 13 mm (2by 5 612 in.) with the longer side parallel to the machinedirection of the sheet.9. Procedure9.1 Place a set of strips in t
11、he tared weighing container andexpose them, uncovered, for at least 1 but not more than2hinan oven, the interior of which is maintained at a temperature of105 6 3C. Keep the felt strips flat. Do not fold, roll, or distortthem in any way. Handle the six strips as a unit in all of thefollowing operati
12、ons.1This test method is under the jurisdiction of ASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.04 on Feltsand Fabrics.Current edition approved May 1, 2004. Published May 2004. Originallyapproved in 1997. Last previous edition approved in 1997 a
13、s D 6136 97.2For 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.1Copyright ASTM International, 100 Barr Harbor Dr
14、ive, PO Box C700, West Conshohocken, PA 19428-2959, United States.9.2 Remove the strips in the weighing container from theoven and place them, with the container still uncovered, in adesiccator to cool.9.3 After cooling, rapidly close the container and weigh itwith enclosed strips to the nearest 10
15、mg to obtain the netweight of the dry strips.9.4 Insert a wire hook in one corner of the strips andimmerse them at once in a vertical position in 1000 mL ofkerosine at 25 6 1C in the glass vacuum vessel. Apply avacuum of at least 700 mm Hg to the vessel containing thestrips and hold it under these c
16、onditions for 15 min or for 5 minafter the bubbles cease to come from the felt strips, whicheverperiod is longer. Remove the felt strips from the kerosine andlet them drain in the machine direction of the felt for 3 min 61 s, allowing the lower corner of each strip to touch the edgeof the kerosine c
17、ontainer.9.5 Return the soaked strips to their weighing container,close the container, and determine the combined weight of thestrips and the absorbed kerosine. (WarningCare should beexercised in the use of kerosine because it is flammable. Do notexpose the material and its vapors to open flame or e
18、lectricalspark.)10. Calculation10.1 Calculate the kerosine number as follows:Kerosine number 5b/a!1c(1)where:a = weight of dry felt in g,b = weight of dry felt plus absorbed kerosine in g, andc = specific gravity of the kerosine.11. Report11.1 Report the kerosine number as the average of twodetermin
19、ations, to three significant figures.12. Precision and Bias12.1 The following criteria shall be used for judging theacceptability of any result (95 % confidence level):12.1.1 RepeatabilityDuplicate results by the same opera-tor should not be considered suspect unless they differ by morethan 2.5 %.12
20、.1.2 ReproducibilityReproducibility has not been deter-mined.12.1.3 BiasThe bias of this test method has not beendetermined.13. Keywords13.1 kerosine number; unsaturated (dry) felt; unsaturatedroofing feltASTM International takes no position respecting the validity of any patent rights asserted in c
21、onnection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the resp
22、onsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive carefu
23、l consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International,
24、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 6136 97 (2004)e12
