1、Designation: D 2962 97 (Reapproved 2007)An American National StandardStandard Test Method forCalculating Volume-Temperature Correction For Coal-TarPitches1This standard is issued under the fixed designation D 2962; the number immediately following the designation indicates the year oforiginal adopti
2、on 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 calculation of the amount ofexpansion or contract
3、ion of a volume of liquid coal-tar pitchdue to a change of temperature.2. Referenced Documents2.1 ASTM Standards:2D70 Test Method for Density of Semi-Solid BituminousMaterials (Pycnometer Method)D71 Test Method for Relative Density of Solid Pitch andAsphalt (Displacement Method)3. Summary of Test Me
4、thod3.1 Different pitches expand or contract at different rateswhich vary in relation to the relative density of the material.The corresponding values are listed in Table 1.4. Significance and Use4.1 Coal tar pitch is shipped or stored, or both, at varioustemperatures, consequently a means is requir
5、ed 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 Methods D70orD71,whichever is most suitable.5.2 Find the coefficient of expansion per degree Celsius orFahrenheit for the particular material from
6、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 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
7、, divide the measured volume byfactor A (5.4). If the temperature of the material as measured isbelow the standard temperature, multiply the measured volumeby 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 dens
8、ity 60/60F (15.6/15.6C) according to TestMethod D70is 1.28.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 gal at 60F(15.6C).6. Keywords6.1 coal tar pitch; correction factor; pi
9、tch; relative density;volume-temperature correction1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.02.0A on Temperature, Density, Physical Properties.Current edition approved May 1, 2007. Publis
10、hed June 2007. Originallyapproved in 1971. Last previous edition approved in 2002 as D 2962 97 (2002).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
11、Document Summary page onthe ASTM website.TABLE 1 Expansion Coefficient Versus Relative DensityRelative Density 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
12、5351.260 290 5251.270 285 5201.280 280 5101.290 275 5001.300 270 4901.310 265 4801.320 260 4701.330 255 4601.340 250 4501Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity of a
13、ny patent rights asserted in connection 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 re
14、vision at any time by the responsible 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. You
15、r comments will receive careful 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 copy
16、righted by ASTM International, 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 2962 97 (2007)2
