ASTM D2168-02a
(Test Method)Standard Test Methods for Calibration of Laboratory Mechanical-Rammer Soil Compactors
Standard Test Methods for Calibration of Laboratory Mechanical-Rammer Soil Compactors
SIGNIFICANCE AND USE
Mechanical compactors are commonly used to replace the hand compactors required for Test Methods D 698 and D 1557 in cases where it is necessary to increase production.
The design of mechanical compactors is such that it is necessary to have a calibration process that goes beyond determining the mass and drop of the hammer.
Note 1—The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria is Practice D 3740 are generally considered capable of competent and objective testing/sampling/inspection/and the like. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.
SCOPE
1.1 These test methods for the calibration of mechanical soil compactors are for use in checking and adjusting mechanical devices used in laboratory compacting of soil and soil-aggregate in accordance with Test Methods D 698, D 1557 and other methods of a similar nature which might specify this method. Calibration for use with one method does not qualify the equipment for use with another method.
1.2 The weight of the mechanical rammer is adjusted as described in and in order to provide that the mechanical compactor will produce the same result as the manual compactor.
1.3 Two alternative procedures are provided as follows:SectionTest Method ACalibration based on the compaction of a selected soil sample5Test Method BCalibration based on the deformation of a standard lead cylinder6
1.4 If a mechanical compactor is calibrated in accordance with the requirements of either Test Method A or Test Method B, it is not necessary for it to meet the requirements of the other method.
1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.6 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.
General Information
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Standards Content (Sample)
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Designation:D2168–02a
Standard Test Methods for
Calibration of Laboratory Mechanical-Rammer Soil
1
Compactors
This standard is issued under the fixed designation D2168; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* D653 Terminology Relating to Soil, Rock, and Contained
Fluids
1.1 Thesetestmethodsforthecalibrationofmechanicalsoil
D698 Test Methods for Laboratory Compaction Character-
compactors are for use in checking and adjusting mechanical
3
istics of Soil Using Standard Effort (12 400 ft-lbf/ft (600
devices used in laboratory compacting of soil and soil-
3
kN-m/m ))
aggregate in accordance with Test Methods D698, D1557 and
D1557 Test Methods for Laboratory Compaction Charac-
other methods of a similar nature which might specify this
teristics of Soil Using Modified Effort (56,000 ft-lbf/
method. Calibration for use with one method does not qualify
3 3
ft (2,700 kN-m/m ))
the equipment for use with another method.
D2487 Practice for Classification of Soils for Engineering
1.2 The weight of the mechanical rammer is adjusted as
Purposes (Unified Soil Classification System)
described in 5.4 and 6.5 in order to provide that the mechanical
D3740 Practice for Minimum Requirements for Agencies
compactor will produce the same result as the manual com-
Engaged in Testing and/or Inspection of Soil and Rock as
pactor.
Used in Engineering Design and Construction
1.3 Two alternative procedures are provided as follows:
E11 SpecificationforWovenWireTestSieveClothandTest
Section
Sieves
Test Method A Calibration based on the compaction of a 5
selected soil sample
E145 Specification for Gravity-Convection and Forced-
Test Method B Calibration based on the deformation of a 6
Ventilation Ovens
standard lead cylinder
1.4 If a mechanical compactor is calibrated in accordance 3. Significance and Use
with the requirements of either Test Method A or Test Method
3.1 Mechanical compactors are commonly used to replace
B,itisnotnecessaryforittomeettherequirementsoftheother
the hand compactors required for Test Methods D698 and
method.
D1557 in cases where it is necessary to increase production.
1.5 The values stated in inch-pound units are to be regarded
3.2 The design of mechanical compactors is such that it is
as the standard. The values given in parentheses are for
necessary to have a calibration process that goes beyond
information only.
determining the mass and drop of the hammer.
1.6 This standard does not purport to address all of the
NOTE 1—The quality of the result produced by this standard is
safety concerns, if any, associated with its use. It is the
dependent on the competence of the personnel performing it, and the
responsibility of the user of this standard to establish appro-
suitability of the equipment and facilities used. Agencies that meet the
priate safety and health practices and determine the applica-
criteria is Practice D3740 are generally considered capable of competent
bility of regulatory limitations prior to use.
and objective testing/sampling/inspection/and the like. Users of this
standard are cautioned that compliance with Practice D3740 does not in
2. Referenced Documents
itself assure reliable results. Reliable results depend on many factors;
2
Practice D3740 provides a means of evaluating some of those factors.
2.1 ASTM Standards:
4. Apparatus
1
These test methods are under the jurisdiction ofASTM Committee D18 on Soil
4.1 For Test MethodA, in addition to the apparatus require-
and Rock and are the direct responsibility of Subcommittee D18.03 on Texture,
ments specified in Test Methods D698 and D1557, the follow-
Plasticity and Density Characteristics of Soils.
ing is required:
Current edition approved Nov. 10, 2002. Published January 2003. Originally
apprroved in 1990. Last previous edition D2168 – 02. DOI: 10.1520/D2168-02A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM 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.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D2168–02a
4.1.1 Drying Oven——Thermostatically controlled oven, 4.2.1 Lead Deformation Apparatus—A lead deformation
preferably of the forced-draft type, meeting the requirements apparatus consisting of an
...
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