ASTM C430-96
(Test Method)Standard Test Method for Fineness of Hydraulic Cement by the 45-µm (No. 325) Sieve
Standard Test Method for Fineness of Hydraulic Cement by the 45-µm (No. 325) Sieve
SCOPE
1.1 This test method covers the determination of the fineness of hydraulic cement by means of the 45-[mu]m (No. 325) sieve.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound equivalents of SI units may be approximate.
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.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
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Designation: C 430 – 96
Standard Test Method for
Fineness of Hydraulic Cement by the 45-μm (No. 325) Sieve
This standard is issued under the fixed designation C 430; 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 ments of Specification E 11 or a 45-μm electroformed rein-
forced nickel sieve sheet conforming to the requirements of
1.1 This test method covers the determination of the fine-
Specification E 161 with the exception that the number of
ness of hydraulic cement by means of the 45-μm (No. 325)
openings shall be 71 6 2 per linear centimetre (180 6 5 per
sieve.
linear inch).
1.2 The values stated in SI units are to be regarded as the
3.1.3 Cloth or Sheet Mounting:
standard. The inch-pound equivalents of SI units may be
3.1.3.1 Woven-Wire Cloth Mounting—Type 304 stainless
approximate.
steel woven-type cloth shall be mounted in the frame without
1.3 This standard does not purport to address all of the
distortion, looseness, or wrinkling. For a sieve fabricated by
safety concerns, if any, associated with its use. It is the
soldering the cloth to the frame, the joint shall be made smooth
responsibility of the user of this standard to establish appro-
to prevent the cement from catching in the joints between the
priate safety and health practices and determine the applica-
sieve cloth and the frame. Two-piece sieves shall clamp tightly
bility of regulatory limitations prior to use.
on the cloth to prevent the cement from catching in the joints
2. Referenced Documents
between the sieve cloth and the frame.
3.1.3.2 Electroformed Sieve Sheet Mounting—
2.1 ASTM Standards:
Electroformed reinforced nickel sieve sheet shall be mounted
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
in the frame without distortion, looseness, or wrinkling. The
poses
joint between the sieve cloth and the frame shall be made
E 161 Specification for Precision Electroformed Sieves
smooth with a material impervious to water.
(Square Opening Series)
3.2 Spray Nozzle—The spray nozzle (Fig. 1) shall be
E 177 Practice for Use of the Terms Precision and Bias in
constructed of metal not subject to corrosion by water and shall
ASTM Test Methods
be 17.5 mm (0.69 in.) in inside diameter with a central hole
3. Apparatus
drilled in line with the longitudinal axis, an intermediate row of
eight holes drilled 6 mm (0.23 in.) center-to-center at an angle
3.1 Sieve:
of 5° from the longitudinal axis, and an outer row of eight holes
3.1.1 Sieve Frame—The sieve frame shall be of metal not
drilled 11 mm (0.44 in.) center-to-center at an angle of 10°
subject to corrosion by water and shall be circular, either 51 6
from the longitudinal axis. All holes shall be 0.5 mm (0.02 in.)
6 mm (2.0 6 0.25 in.) when woven-wire cloth is mounted in
in diameter. The spray nozzle shall have been checked within
the frame or 76 6 6 mm (3.0 6 0.25 in.) in diameter when an
six months prior to testing a cement sample to ensure that the
electroformed sheet is mounted in the frame. The depth of the
flow rate is between 1500 and 3000 g/min at 69 6 3 kPa (10
sieve from the top of the frame to the cloth or sheet shall be 76
6 0.4 psi).
6 6 mm (3.06 0.25 in.). The frame shall have either side walls
3.3 Pressure Gage—The pressure gage shall be 76 mm (3.0
of 89 6 6 mm (3.5 6 0.25 in.) in total height, or legs at least
in.) minimum diameter, and shall be graduated in 7-kPa (1-psi)
12 mm (0.5 in.) in length, sufficient to allow air circulation
increments, and shall have a maximum capacity of 207 kPa (30
beneath the sieve cloth or electroformed sheet.
psi). The accuracy at 69 kPa (10 psi) shall be 62 kPa (60.25
3.1.2 Sieve Cloth or Electroformed Sheet—The sieve frame
psi).
shall be fitted with either a 45-μm (No. 325) stainless steel AISI
Type 304 woven-wire sieve cloth, conforming to the require-
4. Calibration of 45-μm (No. 325) Sieve
4.1 Place 1.000 g of the current lot of National Institute of
This test method is under the jurisdiction of ASTM Committee C-1 on Cement
Standards and Technology standard sample No. 114 on the
and is the direct responsibility of Subcommittee C01.25 on Fineness.
clean, dry, 45-μm (No. 325) sieve and proceed as in Section 5.
Current edition approved Dec. 10, 1996. Published February 1997. Originally
The sieve correction factor is the difference between the test
published as C 430 – 59 T. Last previous edition C 430 – 95.
residue obtained and the assigned residue value indicated by
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C430–96
6. Cleaning of 45-μm (No. 325) Sieves
6.1 Frequency of Cleaning and Calibration—Sieves fitted
with woven wire sieve cloth shall be cleaned after no more than
five determinations. Sieves fitted with an electroformed rein-
forced sieve sheet having 71 openings per linear centimetre
shall be cleaned after no more than three determinations. Both
types of sieves shall be recalibrated after no more than 100
determinations.
6.2 Acceptable Cleaning Procedures—One option for
cleaning is to place the sieve in a low-power (150 W maximum
power input) ultrasonic bath containing an appropriate labora-
tory cleaning solution. The bath is to be operated for suffic
...
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