ASTM C143/C143M-00
(Test Method)Standard Test Method for Slump of Hydraulic Cement Concrete
Standard Test Method for Slump of Hydraulic Cement Concrete
SCOPE
1.1 This test method covers determination of slump of hydraulic-cement concrete, both in the laboratory and in the field.
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not 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.
1.4 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.
General Information
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Standards Content (Sample)
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An American National Standard
Designation: C 143/C 143M – 00
Standard Test Method for
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Slump of Hydraulic-Cement Concrete
This standard is issued under the fixed designation C 143/C 143M; 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 (e) 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 procedure to determine slump of plastic hydraulic-cement
concretes.
1.1 This test method covers determination of slump of
hydraulic-cement concrete, both in the laboratory and in the
NOTE 1—This test method was originally developed to provide a
field.
technique to monitor the consistency of unhardened concrete. Under
laboratory conditions, with strict control of all concrete materials, the
1.2 The values stated in either inch-pound units or SI units
slump is generally found to increase proportionally with the water content
are to be regarded separately as standard. Within the text, the
of a given concrete mixture, and thus to be inversely related to concrete
SI units are shown in brackets. The values stated in each
strength. Under field conditions, however, such a strength relationship is
system are not exact equivalents; therefore, each system shall
not clearly and consistently shown. Care should therefore be taken in
be used independently of the other. Combining values from the
relating slump results obtained under field conditions to strength.
two systems may result in nonconformance with the standard.
4.2 This test method is considered applicable to plastic
1.3 This standard does not purport to address all of the
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concrete having coarse aggregate up to 1 ⁄2 in. [37.5 mm] in
safety concerns, if any, associated with its use. It is the
size. If the coarse aggregate is larger than 1 1/2 in. [37.5 mm]
responsibility of the user of this standard to establish appro-
in size, the test method is applicable when it is performed on
priate safety and health practices and determine the applica-
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the fraction of concrete passing a 1 ⁄2-in. [37.5-mm] sieve,
bility of regulatory limitations prior to use.
with the larger aggregate being removed in accordance with the
1.4 The text of this standard references notes and footnotes
section titled “Additional Procedure for Large Maximum Size
which provide explanatory material. These notes and footnotes
Aggregate Concrete” in Practice C 172.
(excluding those in tables and figures) shall not be considered
4.3 This test method is not considered applicable to non-
as requirements of the standard.
plastic and non-cohesive concrete.
2. Referenced Documents
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NOTE 2—Concretes having slumps less than ⁄2 in. [15 mm] may not be
adequately plastic and concretes having slumps greater than about 9 in.
2.1 ASTM Standards:
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[230 mm] may not be adequately cohesive for this test to have signifi-
C 172 Practice for Sampling Freshly Mixed Concrete
cance. Caution should be exercised in interpreting such results.
C 670 Practice for Preparing Precision and Bias Statements
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for Test Methods for Construction Materials
5. Apparatus
5.1 Mold—The test specimen shall be formed in a mold
3. Summary of Test Method
made of metal not readily attacked by the cement paste. The
3.1 A sample of freshly mixed concrete is placed and
metal shall not be thinner than 0.060 in. [1.5 mm] and if
compacted by rodding in a mold shaped as the frustum of a
formed by the spinning process, there shall be no point on the
cone. The mold is raised, and the concrete allowed to subside.
mold at which the thickness is less than 0.045 in. [1.15 mm].
The vertical distance between the original and displaced
The mold shall be in the form of the lateral surface of the
position of the center of the top surface of the concrete is
frustum of a cone with the base 8 in. [200 mm] in diameter, the
measured and reported as the slump of the concrete.
top 4 in. [100 mm] in diameter, and the height 12 in. [300 mm].
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Individual diameters and heights shall be within 6 ⁄8in. [3
4. Significance and Use
mm] of the prescribed dimensions. The base and the top shall
4.1 This test method is intended to provide the user with a
be open and parallel to each other and at right angles to the axis
of the cone. The mold shall be provided with foot pieces and
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This test method is under the jurisdiction of ASTM Committee C09 on
handles similar to those shown in Fig. 1. The mold shall be
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee
constructed without a seam. The interior of the mold shall be
C09.60 on Fresh Concrete Testing.
Current edition approved Aug. 10, 2000. Published October 2000. Ori
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