ASTM D3142/D3142M-11
(Test Method)Standard Test Method for Specific Gravity, API Gravity, or Density of Cutback Asphalts by Hydrometer Method
Standard Test Method for Specific Gravity, API Gravity, or Density of Cutback Asphalts by Hydrometer Method
SIGNIFICANCE AND USE
Accurate determination of the density, specific gravity, or API gravity of cutback asphalts is necessary for the conversion of measured volumes to volumes at the standard temperature of 15°C or 60°F.
Similarly, accurate determination is necessary for converting volumes to mass as required in other ASTM tests on cutback asphalts.
Values corrected to 15°C and 60°F will be different because the two temperatures are not equal.
SCOPE
1.1 This test method covers the laboratory determination, using a glass hydrometer, of the density, specific gravity, or API gravity of cutback asphalts as defined in Specifications D2026, D2027, and D2028 (Note 1). Values are measured on a hydrometer at convenient temperatures, readings of density, specific gravity, and API gravity being reduced to 15°C or 60°F by means of international standard tables. By means of these same tables, values determined in one of the three systems of measurement are convertible to equivalent values in either system so that measurements may be made in the units of local convenience.
Note 1—This test method is applicable to cutback asphalts and in general follows, but provides more explicit routines than, the procedure outlined in Test Method D1298.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 7.
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Designation:D3142/D3142M −11
Standard Test Method for
Specific Gravity, API Gravity, or Density of Cutback Asphalts
1
by Hydrometer Method
This standard is issued under the fixed designation D3142/D3142M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D140 Practice for Sampling Bituminous Materials
D1250 Guide for Use of the Petroleum Measurement Tables
1.1 This test method covers the laboratory determination,
D1298 Test Method for Density, Relative Density (Specific
using a glass hydrometer, of the density, specific gravity, or
Gravity), or API Gravity of Crude Petroleum and Liquid
API gravity of cutback asphalts as defined in Specifications
Petroleum Products by Hydrometer Method
D2026, D2027, and D2028 (Note 1). Values are measured on a
D2026 Specification for Cutback Asphalt (Slow-Curing
hydrometer at convenient temperatures, readings of density,
Type)
specificgravity,andAPIgravitybeingreducedto15°Cor60°F
D2027 Specification for Cutback Asphalt (Medium-Curing
by means of international standard tables. By means of these
Type)
same tables, values determined in one of the three systems of
D2028 Specification for Cutback Asphalt (Rapid-Curing
measurement are convertible to equivalent values in either
Type)
system so that measurements may be made in the units of local
E1 Specification for ASTM Liquid-in-Glass Thermometers
convenience.
E100 Specification for ASTM Hydrometers
NOTE 1—This test method is applicable to cutback asphalts and in
E220 Test Method for Calibration of Thermocouples By
general follows, but provides more explicit routines than, the procedure
Comparison Techniques
outlined in Test Method D1298.
1.2 Units—The values stated in either SI units or inch-
3. Terminology
pound units are to be regarded separately as standard. The
3.1 Definitions of Terms Specific to This Standard:
values stated in each system may not be exact equivalents;
3.1.1 API gravity—a function of specific gravity 15/15°C
therefore,eachsystemshallbeusedindependentlyoftheother.
[60/60°F], represented by the equation:
Combining values from the two systems may result in noncon-
°API 5 141.5/SG 15/15°C 2 131.5 or
@ #
formance with the standard.
°API 5 @141.5/SG 60/60°F# 2 131.5
1.3 This standard does not purport to address all of the
No statement of reference temperature is required since 15°C
safety concerns, if any, associated with its use. It is the
[60°F] is included in the definition.
responsibility of the user of this standard to establish appro-
3.1.2 density—The mass of material per unit volume. When
priate safety and health practices and determine the applica-
reporting results, explicitly state the density in units of mass
bility of regulatory limitations prior to use. Specific precau-
(kilograms) and volume (litres), together with the standard
tionary statements are given in Section 7.
reference temperature.
3.1.3 observed values—values observed at temperatures
2. Referenced Documents
other than the standard reference temperature. Values observed
2
2.1 ASTM Standards:
at other temperatures are only hydrometer readings, and not
C670 Practice for Preparing Precision and Bias Statements
density, relative density (specific gravity), or API gravity.
for Test Methods for Construction Materials
3.1.4 specific gravity—The ratio of mass of a given volume
of a material at a specified temperature to the mass of an equal
1
This test method is under the jurisdiction of ASTM Committee D04 on Road volume of pure water measured at the reference temperature.
and Paving Materials and is the direct responsibility of Subcommittee D04.47 on
When reporting results, the standard reference temperature
Miscellaneous Asphalt Tests.
must be stated.
Current edition approved Dec. 15, 2011. Published January 2012. Originally
approved in 1972. Last previous edition approved in 2005 as D3142 – 05. DOI:
4. Summary of Test Method
10.1520/D3142/D3142M-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.1 The sample is brought to the testing temperature and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
transferred to a hydrometer cylinder at approximately the same
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. temperature. The cylinder and its contents are placed in a
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D3142/D3142M−11
constant-temperature bath to avoid excessive temperature 6.4 Constant-Temperature Bath, capab
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D3142–05 Designation: D3142/D3142M – 11
Standard Test Method for
Specific Gravity, API Gravity, or Density of Cutback Asphalts
1
by Hydrometer Method
This standard is issued under the fixed designation D3142/D3142M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the laboratory determination, using a glass hydrometer, of the density, specific gravity, or API
gravity of cutback asphalts as defined in Specifications D2026, D2027, and D2028 (Note 1). Values are measured on a hydrometer
at convenient temperatures, readings of density, specific gravity, and API gravity being reduced to 15°C or 60°F by means of
international standard tables. By means of these same tables, values determined in one of the three systems of measurement are
convertible to equivalent values in either system so that measurements may be made in the units of local convenience.
NOTE 1—This test method is applicable to cutback asphalts and in general follows, but provides more explicit routines than, the procedure outlined
in Test Method D1298.
1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated
in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in nonconformance with the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. Specific precautionary statements are given in Section 7.
2. Referenced Documents
2
2.1 ASTM Standards:
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
D140 Practice for Sampling Bituminous Materials
D1250 Guide for Use of the Petroleum Measurement Tables
D1298 Test Method for Density, Relative Density (Specific Gravity), orAPI Gravity of Crude Petroleum and Liquid Petroleum
Products by Hydrometer Method
D2026 Specification for Cutback Asphalt (Slow-Curing Type)
D2027 Specification for Cutback Asphalt (Medium-Curing Type)
D2028 Specification for Cutback Asphalt (Rapid-Curing Type)
E1 Specification for ASTM Liquid-in-Glass Thermometers
E100 Specification for ASTM Hydrometers
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 API gravity—a function of specific gravity 15/15°C [60/60°F], represented by the equation:
°API5~141.5/SG 60/60°F!–131.5
No statement of reference temperature is required since 60°F is included in the definition.
1
This test method is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.47 on
Miscellaneous Asphalt Tests.
Current edition approved June 1, 2005. Published July 2005. Originally approved in 1972. Last previous edition approved in 1997 as D3142–97. DOI: 10.1520/D3142-05.
Current edition approved Dec. 15, 2011. Published January 2012. Originally approved in 1972. Last previous edition approved in 2005 as D3142 – 05. DOI:
10.1520/D3142/D3142M-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D3142/D3142M – 11
°API 5 [141.5/SG 15/15°C] – 131.5 or
°API 5 [141.5/SG 60/60°F] – 131.5
No statement of reference temperature is required since 15°C [60°F] is included in the definition.
3.1.2 density—The mass of material per unit volume. When reporting results, explicitly state the density in units of mass
(kilograms) and volume (litres), together with the standard refe
...
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