ASTM_D_727_-_96_2001.pdf

Designation:D 727 96(Reapproved 2001)Technical Association of Pulp and Paper IndustryStandard Method T 427 SU-71An American National StandardStandard Test Method forKerosine Number of Roofing and Flooring Felt by theVacuum Method1This standard is issued under the fixed designation D 727;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,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.1.Scope1.1 This test method covers the determination of the relativesaturating capacity of felt papers for roofing and flooring.1.2 The results are reported in terms of the kerosine numberof the sample.1.3 While the results reported are numerical,they are usedonly as a relative measure of the saturating capacity of feltpapers,and this test method as generally used provides aqualitative means to differentiate and rank various paperswhich are to be subjected to bituminous saturation.1.4 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-bility of regulatory limitations prior to use.Specific warningstatements are given in 10.5.2.Referenced Documents2.1 ASTM Standards:D 70 Test Method for Specific Gravity and Density ofSemi-Solid Bituminous Materials2D 585 Practice for Sampling and Accepting a Single Lot ofPaper,Paperboard,Fiberboard,and Related Products3D 1298 Practice for Density,Relative Density(SpecificGravity),or API Gravity of Crude Petroleum and LiquidPetroleum Products by Hydrometer Method4E 122 Practice for Choice of Sample Size to Estimate aMeasure of Quality for a Lot or Process53.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 kerosine number,nthe volume of kerosine absorbedby 100 g of a sample of saturating felt under the conditionsspecified in this test method.4.Summary of Test Method4.1 Test specimens cut in the form of rectangles of defineddimensions are dried in an air oven at 105C for a specifiedtime,cooled,and weighed.The test specimens are thenallowed to absorb kerosine under specified conditions of timeand pressure.After controlled draining of excess kerosine,thetest specimens are reweighed and the kerosine number calcu-lated using a specified formula.5.Significance and Use5.1 Felt papers for roofing and flooring are important in theconstruction industry.Felt papers with different end use prop-erties can be made.The kerosine number is a relative measureof the amount of a bituminous saturant a lot of saturating gradepaper is capable of absorbing,and is useful in choosing papersfor specific levels of saturation or manufacture into specific endproducts.Generally,higher relative kerosine numbers basedupon this test method are desirable.6.Apparatus6.1 Glass Vessel,approximately 1500-mL capacity,forsoaking specimens of felt in kerosine,under vacuum.6.2 Vacuum Pump,capable of reaching and maintaining avacuum of at least 700 mm Hg in the glass vessel.6.3 Lightweight Glass or Metal Weighing Container,withtightly fitting cover,60 by 140 mm(212by 512in.)or larger;to contain felt strips in a horizontal position without bending ordistorting them.6.4 Drying Oven,with dimensions at least 300 by 300 by300 mm(12 by 12 by 12 in.).6.5 Other ApparatusDesiccator,wire hook,and if neces-sary a punch to make a small hole in a corner of the specimensafter they are cut.7.Materials7.1 Water-White Kerosine,having a specific gravity of 0.8006 0.025 at 25C,as determined in accordance with TestMethod D 1298.8.Sampling8.1 Acceptance SamplingObtain a sample in accordancewith Practice D 585.1This test method is under the jurisdiction of ASTM Committee D06 on Paperand Paper Products and is the direct responsibility of Subcommittee D06.92 on TestMethods.Current edition approved May 10,1996.Published July 1996.Originallypublished as D 727 43 T.Last previous edition D 727 76(1992)e1.2Annual Book of ASTM Standards,Vol 04.03.3Annual Book of ASTM Standards,Vol 15.09.4Annual Book of ASTM Standards,Vol 05.01.5Annual Book of ASTM Standards,Vol 14.02.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.8.2 Sampling for Other PurposesThe sampling and thenumber of test specimens depends on the purpose of thetesting.Practice E 122 is recommended.9.Test Specimens9.1 From each test unit of the sample cut two sets of six testspecimen strips,each strip measuring 51 by 127 6 3 mm(2 by5 612in.)with the longer side parallel to the machinedirection of the sheet.10.Procedure10.1 Place a set of strips in the tared weighing container andexpose them,uncovered,for at least 1 but not more than 2 h inan oven,the interior of which is maintained at a temperature of105 6 3C.Keep the felt strips flat;do not fold,roll,or distortthem