ASTM C187-98
(Test Method)Standard Test Method for Normal Consistency of Hydraulic Cement
Standard Test Method for Normal Consistency of Hydraulic Cement
SCOPE
1.1 This test method covers the determination of the normal consistency of hydraulic cement.
1.2 This standard does not purport to address all of the safety problems, 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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American Association State
Designation:C 187–98 Highway and Transportation Officials Standard
AASHTO No.: T 129
Standard Test Method for
Normal Consistency of Hydraulic Cement
This standard is issued under the fixed designation C 187; 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 fication C 1005. The weighing device shall be evaluated for
precision and accuracy at a total load of 1000 g.
1.1 This test method covers the determination of the normal
4.2 GlassGraduates,200or250-mLcapacity,andconform-
consistency of hydraulic cement.
ing to the requirements of Practice C 490.
1.2 The values stated in SI units are to be regarded as the
4.3 Vicat Apparatus—The Vicat apparatus shall consist of a
standard. The values given in parentheses are for information
frameA (Fig. 1) bearing a movable rodB, weighing 300 g, one
only.
endC, the plunger end, being 10 mm in diameter for a distance
1.3 This standard does not purport to address all of the
of at least 50 mm, and the other end having a removable needle
safety concerns, if any, associated with its use. It is the
D, 1 mm in diameter and 50 mm in length. The rod B is
responsibility of the user of this standard to establish appro-
reversible, and can be held in any desired position by a set
priate safety and health practices and determine the applica-
screw E, and has an adjustable indicator F, which moves over
bility of regulatory limitations prior to use.
a scale (graduated in millimetres) attached to the frame A. The
2. Referenced Documents
paste is held in a rigid conical ring G, resting on a plane
nonabsorptivesquarebaseplateH,about100mmoneachside.
2.1 ASTM Standards:
The rod B shall be made of stainless steel having a hardness of
C 305 PracticeforMechanicalMixingofHydraulicCement
not less than 35 HRC (Note), and shall be straight with the
Pastes and Mortars of Plastic Consistency
plunger end which is perpendicular to the rod axis. The ring
C 490 Practice for Use of Apparatus for the Determination
shall be made of a noncorroding, nonabsorbent material, and
of Length Change of Hardened Cement Paste, Mortar, and
shall have an inside diameter of 70 mm at the base and 60 mm
Concrete
at the top, and a height of 40 mm. In addition to the above, the
C 1005 Specification forWeights andWeighing Devices for
Vicat apparatus shall conform to the following requirements:
Use in the Physical Testing of Hydraulic Cements
Weight of movable rod 300 6 0.5 g (0.661 lb 6 8 grains) in
D 1193 Specification for Reagent Water
Diameter of plunger end of rod 10 6 0.05 mm (0.394 6 0.002 in.)
E 177 Practice for Use of the Terms Precision and Bias in
Diameter of needle 1 6 0.05 mm (0.039 6 0.002 in.)
ASTM Test Methods
Inside diameter of ring at bottom 70 63mm(2.75 6 0.12 in.)
Inside diameter of ring at top 60 63mm(2.36 6 0.12 in.)
Height of ring 40 61mm(1.57 6 0.04 in.)
3. Significance and Use
Graduated scale The graduated scale, when compared
3.1 This test method is intended to be used to determine the
with a standard scale accurate to within
0.1 mm at all points, shall not show a
amount of water required to prepare hydraulic cement pastes
deviation at any point greater than 0.25
for testing.
mm.
NOTE 1—The requirement that the rod be made of stainless steel shall
4. Apparatus
apply only to new Vicat apparatus or replacement rods and not to
4.1 Weights and Weighing Devices—The weights and
equipment in use which meets the other requirements of this test method.
weighing devices shall conform to the requirements of Speci-
5. Temperature and Humidity
5.1 The temperature of the air in the vicinity of the mixing
1 slab, the dry cement, molds, and base plates shall be main-
This test method is under the jurisdiction ofASTM Committee C-1 on Cement
tained between 20 and 27.5°C (68 and 81.5°F). The tempera-
and is the direct responsibility of Subcommittee C01.22 on Workability.
Current edition approved July 10, 1998. Published December 1998. Originally
tureofthemixingwatershallnotvaryfrom23.0°C(73.5°F)by
published as C 187 – 44. Last previous edition C 187 – 86 (1991).
more than 62.0°C (3.5°F).
Annual Book of ASTM Standards, Vol 04.01.
5.2 The relative
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