ASTM C1362-97(2002)
(Test Method)Standard Test Method for Flow of Freshly Mixed Hydraulic Cement Concrete
Standard Test Method for Flow of Freshly Mixed Hydraulic Cement Concrete
SCOPE
1.1 This test method covers determination of the flow of a sample of freshly mixed concrete, either in the field or in the laboratory.
1.2 This test method is applicable to concrete having coarse aggregate up to 37.5 mm in size. If the coarse aggregate is larger than 37.5 mm in size, the test method is applicable when the fraction of concrete larger than 37.5 mm is removed in accordance with Practice C 172.
1.3 The values stated in SI units are the standard.
1.4 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.
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Designation: C 1362 – 97 (Reapproved 2002)
Standard Test Method for
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Flow of Freshly Mixed Hydraulic Cement Concrete
This standard is issued under the fixed designation C 1362; 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.
1. Scope 4. Significance and Use
1.1 This test method covers determination of the flow of a 4.1 This test method permits a rapid assessment of the flow
sample of freshly mixed concrete, either in the field or in the and consistency of freshly mixed concrete (see Note 1).
laboratory. 4.2 This test method also provides information on the
1.2 This test method is applicable to concrete having coarse change in flow and consistency with time of concrete contain-
aggregate up to 37.5 mm in size. If the coarse aggregate is ing superplasticizer admixtures.
larger than 37.5 mm in size, the test method is applicable when 4.3 This test method can be used to measure the uniformity
the fraction of concrete larger than 37.5 mm is removed in characteristics of flow and consistency of freshly mixed
accordance with Practice C 172. concrete and its change with time.
1.3 The values stated in SI units are the standard.
NOTE 1—This test method may not be appropriate for use in evaluating
1.4 This standard does not purport to address all of the
gap-graded aggregate concrete.
safety concerns, if any, associated with its use. It is the
5. Apparatus
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5.1 Details of the apparatus are shown in Fig. 1. The
bility of regulatory limitations prior to use.
apparatus consists of (1) measuring rod, (2) scale datum, (3)
hollow tube with round holes and longitudinal slots, (4)
2. Referenced Documents
holding pin, (5) collar floater, and (6) tube point.
2.1 ASTM Standards:
5.2 Measuring rod is a hollow tube, 13 mm in outside
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C 172 Practice for Sampling Freshly Mixed Concrete
diameter, 336 mm long with a wall thickness of 1.5 mm and it
C 670 Practice for Preparing Precision and Bias Statements
is capped at both ends with a cap 15 mm in outside diameter.
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for Test Methods for Construction Materials
A scale datum is 45 mm in outside diameter and 25 mm wide
and fabricated to fit hollow tube and accommodate measuring
3. Summary of Test Method
rod. Hollow tube has an outside diameter of 33 mm, and it is
3.1 A flow apparatus comprising an outer partially perfo-
310 mm long with a wall thickness of 4 mm and has 16 round
rated hollow tube and an inner calibrated floating rod is
holes, 9.4 mm in diameter, and 4 longitudinal slots, 9.4 mm
inserted into a sample of freshly mixed concrete to a preset
wide by 50 mm long, which are distributed around the
level and held in place by a collar floater. A portion of the
circumference of the tube as shown in Fig. 1. A pin which is a
concrete is allowed to flow into the hollow tube through its
rivet, 3.2 mm in diameter, protrudes 3.2 mm inside tube. Collar
perforations for a period of 40 s. The inner floating rod is then
floater, made of a plate 5 mm thick, has an outside diameter of
lowered onto the concrete surface that has penetrated the
90 mm and inside diameter of 33 mm, is connected to hollow
hollow tube. The height of the concrete in the hollow tube is
tube. Tube point is machined from a rod stock and fashioned
read from the scale on the upper portion of the floating rod
into a conical shape. It is secured to the bottom end of hollow
protruding from the top of the hollow tube. With increasing
tube, and it is used to facilitate the insertion of the assembly
fluidity of the concrete a higher flow reading is obtained on a
into the fresh concrete. All individual dimensions shall have a
scale from zero to one hundred divisions.
tolerance of 61 % of their value. Make all parts of the
apparatus of non-corrosive materials that are not affected by
chemicals found in the fresh concrete.
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This test method is under the jurisdiction of ASTM Committee C09 on
6. Sampling
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee
C09.60 on Testing Fresh Concrete.
6.1 Determine the flow either as the concrete is placed in the
Current edition approved Dec. 10, 2002. Published February 2003. Originally
forms prior to any manipulation or in a suitable container such
approved in 1997. Last previous edition approved in 1997 as C 1362–97.
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Annual Book of ASTM Standards, Vol 04.02. as a can, a hopper, a pail, or a wheelbarrow. The sample of
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