1、Designation: D2962 10Standard Practice forCalculating Volume-Temperature Correction For Coal-TarPitches1This standard is issued under the fixed designation D2962; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers calculation of the amount of expan-sion or contraction of a volume of liquid coal-tar pitch due toa chang
3、e of temperature.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety conce
4、rns, 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:2D70 Test Method for Density of Semi-Soli
5、d BituminousMaterials (Pycnometer Method)D71 Test Method for Relative Density of Solid Pitch andAsphalt (Displacement Method)3. Summary of Practice3.1 Different pitches expand or contract at different rateswhich vary in relation to the relative density of the material.The corresponding values are li
6、sted in Table 1.4. Significance and Use4.1 Coal tar pitch is shipped or stored, or both, at varioustemperatures, consequently a means is required to correctvolume to a specified temperature.5. Procedure5.1 Determine the relative density of the pitch at 60/60F(15.6/15.6C) in accordance with Test Meth
7、ods D70 or D71,whichever is most suitable.5.2 Find the coefficient of expansion per degree Celsius orFahrenheit for the particular material from Table 1.5.3 Multiply the coefficient by the number of degreesbetween the standard temperature and the actual temperature ofthe material as measured.5.4 To
8、the product of 5.3 add 1.000. The result is expansionfactor A.5.5 If the temperature of the material as measured is abovethe standard temperature, divide the measured volume byfactor A (5.4). If the temperature of the material as measured isbelow the standard temperature, multiply the measured volum
9、eby factor A (5.4).5.6 ExampleA tank of pitch contains 95 000 gal at 350F(177C). Calculate the volume at 60F (15.6C) as follows:The relative density 60/60F (15.6/15.6C) according to TestMethod D70 is 1.28.1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubrica
10、nts and is the direct responsibility of Subcommittee D02.02 onHydrocarbon Measurement for Custody Transfer (Joint ASTM-API).Current edition approved Oct. 1, 2010. Published November 2010. Originallyapproved in 1971. Last previous edition approved in 2007 as D296297(2007).DOI: 10.1520/D2962-10.2For r
11、eferenced 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.TABLE 1 Expansion Coefficient Versus Relative DensityRelative Densi
12、ty at60/60F (15.6/15.6C)Expansion Coefficientper F per C1.160 3453 1066203 1061.170 340 6101.180 330 6001.190 325 5901.200 320 5801.210 315 5701.220 310 5651.230 305 5551.240 300 5451.250 295 5351.260 290 5251.270 285 5201.280 280 5101.290 275 5001.300 270 4901.310 265 4801.320 260 4701.330 255 4601
13、.340 250 4501Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.From Table 1 the coefficient is 280 3 106per F.The temperature difference of 350 60 = 290 .290 3 280 3 106= 0.0812A = 1.0812The corrected volume is 95,000/1.0812 = 87 865 ga
14、l at 60F(15.6C).6. Keywords6.1 coal tar pitch; correction factor; pitch; relative density;volume-temperature correctionASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressl
15、y 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 responsible technical committee and must be reviewed every five years andif not revised, e
16、ither 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 careful consideration at a meeting of theresponsible technical committee, which you may atte
17、nd. 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, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. I
18、ndividual 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D2962 102
