ASTM D6926-10
(Practice)Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus
Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus
SIGNIFICANCE AND USE
Compacted bituminous mixture specimens molded by this procedure are used for various physical tests such as stability, flow, indirect tensile strength, fatigue, creep, and modulus. Density and voids analysis are also conducted on specimens for mixture design and evaluation of field compaction.
Note 1—Uncompacted mixtures are used for determination of theoretical maximum specific gravity.
SCOPE
Compacted bituminous mixture specimens molded by this procedure are used for various physical tests such as stability, flow, indirect tensile strength, fatigue, creep, and modulus. Density and voids analysis are also conducted on specimens for mixture design and evaluation of field compaction.
Note 1—Uncompacted mixtures are used for determination of theoretical maximum specific gravity.
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Designation: D6926 − 10
Standard Practice for
Preparation of Bituminous Specimens Using Marshall
1
Apparatus
This standard is issued under the fixed designation D6926; 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 1.5 The text of this standard references notes and footnotes
which provide explanatory material. These notes and footnotes
1.1 This practice covers preparation and compaction of 102
(excluding those in tables and figures) shall not be considered
mm (4 in.) diameter by nominal 64 mm (2.5 in.) high
as requirements of the standard.
cylindrical bituminous paving mixture specimens by means of
theoriginalmanualMarshallmethodandsubsequentvariations
2. Referenced Documents
of the method (Test Method D6927). This practice is intended
2
2.1 ASTM Standards:
for use with laboratory and plant produced bituminous mix-
D2493 Standard Viscosity-Temperature Chart for Asphalts
tures with aggregate up to 25 mm (1 in.) maximum size and for
D3666 Specification for Minimum Requirements for Agen-
recompaction of asphalt pavement samples.
cies Testing and Inspecting Road and Paving Materials
1.2 There are three types of Marshall compaction apparatus
D6927 Test Method for Marshall Stability and Flow of
in use. The following types of hammer arrangements are
Asphalt Mixtures
included in this practice:
E11 Specification for Woven Wire Test Sieve Cloth and Test
1.2.1 Manually held hammer handle attached to a flat
Sieves
compaction foot through a spring loaded swivel and is hand
operated (original standard developed by the Corps of Engi-
3. Significance and Use
neers).
3.1 Compacted bituminous mixture specimens molded by
1.2.2 Hammer handle restrained laterally (fixed) but not
this procedure are used for various physical tests such as
vertically attached to a flat compaction foot through a spring
stability, flow, indirect tensile strength, fatigue, creep, and
loaded swivel and is either mechanically or hand operated.
modulus. Density and voids analysis are also conducted on
There may or may not be a constant surcharge on top of the
specimens for mixture design and evaluation of field compac-
hammer handle. Mechanical hammers are available that oper-
tion.
ate at (1) nominal 55 blows per minute and (2) equal to or
NOTE 1—Uncompacted mixtures are used for determination of theo-
greater than 75 blows per minute.
retical maximum specific gravity.
1.2.3 Hammer handle restrained laterally (fixed) with con-
stant surcharge on top of hammer, a slanted compaction foot,
4. Apparatus
rotating mold base, and is mechanically operated.
4.1 Specimen Mold Assembly—Mold cylinders, base plates,
1.3 Although the mass and height of mass drop for each
and extension collars shall conform to the details shown in Fig.
apparatus are the same, density achieved in compacted speci-
1.
mens with the same number of blows will be different. It is up
4.2 SpecimenExtractor—The specimen extractor shall have
to the user to establish the specific required number of blows to
a steel disk that will enter the mold without binding and not be
be used for compaction of the specimen in relation to the field.
1
less than 3.95 in. (100 mm) in diameter and ⁄2 in. (12.5 mm)
1.4 Units—The values stated in inch-pound units are to be
thick. The steel disk is used for extracting compacted speci-
regarded as standard. The values given in parentheses are
mens from molds with the use of the mold collar.Any suitable
mathematical conversions to SI units that are provided for
extraction device such as a hydraulic jack apparatus or a lever
information only and are not considered standard.
arm device may be used, provided the specimens are not
deformed during the extraction process.
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and
Paving Materials and is the direct responsibility of Subcommittee D04.20 on
2
Mechanical Tests of Bituminous Mixtures. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 15, 2010. Published September 2010. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2004. Last previous edition approved in 2004 as D6926–04 DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6926-10. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6926 − 10
in. (mm)
A 4.100 to 4.150 (104.1 to 105.4)
B 4.295 to 3.439 (109.1 to 110.2)
C 4.490 to 4.560 (114.0 to 115.8)
D 4.21
...
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:D6926–04 Designation:D6926–10
Standard Practice for
Preparation of Bituminous Specimens Using Marshall
1
Apparatus
This standard is issued under the fixed designation D6926; 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 practice covers preparation and compaction of 102 mm (4 in.) diameter by nominal 64 mm (2.5 in.) high cylindrical
bituminous paving mixture specimens by means of the original manual Marshall method and subsequent variations of the method
(Test Method D6927). This practice is intended for use with laboratory and plant produced bituminous mixtures with aggregate
up to 25 mm (1 in.) maximum size and for recompaction of asphalt pavement samples.
1.2 There are three types of Marshall compaction apparatus in use. The following types of hammer arrangements are included
in this practice:
1.2.1 Manually held hammer handle attached to a flat compaction foot through a spring loaded swivel and is hand operated
(original standard developed by the Corps of Engineers).
1.2.2 Hammer handle restrained laterally (fixed) but not vertically attached to a flat compaction foot through a spring loaded
swivel and is either mechanically or hand operated. There may or may not be a constant surcharge on top of the hammer handle.
Mechanical hammers are available that operate at (1) nominal 55 blows per minute and (2) equal to or greater than 75 blows per
minute.
1.2.3 Hammer handle restrained laterally (fixed) with constant surcharge on top of hammer, a slanted compaction foot, rotating
mold base, and is mechanically operated.
1.3 Although the mass and height of mass drop for each apparatus are the same, density achieved in compacted specimens with
the same number of blows will be different. It is up to the user to establish the specific required number of blows to be used for
compaction of the specimen in relation to the field.
1.4 Units—The 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.
1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
2. Referenced Documents
2
2.1 ASTM Standards:
D2171Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer
D2493 Standard Viscosity-Temperature Chart for Asphalts
D4402Test Method for Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
D6927 Test Method for Marshall Stability and Flow of Bituminous Mixtures
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Significance and Use
3.1 Compacted bituminous mixture specimens molded by this procedure are used for various physical tests such as stability,
flow, indirect tensile strength, fatigue, creep, and modulus. Density and voids analysis are also conducted on specimens for mixture
design and evaluation of field compaction.
NOTE 1—Uncompacted mixtures are used for determination of theoretical maximum specific gravity.
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.20 on Mechanical
Tests of Bituminous Mixes.
Current edition approved Aug. 1, 2004. Published August 2004. DOI: 10.1520/D6926-04.on Mechanical Tests of Bituminous Mixtures.
Current edition approved June 15, 2010. Published September 2010. Originally approved in 2004. Last previous edition approved in 2004 as D6926–04 DOI:
10.1520/D6926-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
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 ----------------------
D6926–10
4. Apparatus
4.1 Specimen Mold Assembly—Mold cylinders, base plates, and extension collars shall conform to the details shown in
...
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