ASTM C1891-19e1
(Test Method)Standard Test Method for Fineness of Hydraulic Cement by Air Jet Sieving at 45-µm (No. 325)
Standard Test Method for Fineness of Hydraulic Cement by Air Jet Sieving at 45-µm (No. 325)
SIGNIFICANCE AND USE
5.1 This test method provides data for assessing compliance where specifications limit the amount of material retained when sieved on a 45-µm (No. 325) sieve.
SCOPE
1.1 This test method covers the determination of the fineness of hydraulic cement by means of air jet sieving using a 45-µm (No. 325) sieve by Air Jet sieving.
1.2 The values stated in SI units are regarded as the standard. The inch-pound equivalents 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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´1
Designation: C1891 − 19
Standard Test Method for
Fineness of Hydraulic Cement by Air Jet Sieving at 45-µm
1
(No. 325)
This standard is issued under the fixed designation C1891; 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.
1
ε NOTE—Added research report footnote to Section 11 and corrected formatting of Appendix X1 and Appendix X2 edito-
rially in January 2020.
1. Scope 3.1.1 Terms relating to this test method are defined in
Terminology C219.
1.1 This test method covers the determination of the fine-
ness of hydraulic cement by means of air jet sieving using a
4. Summary of Test Method
45-µm (No. 325) sieve by Air Jet sieving.
4.1 A known mass of hydraulic cement is placed on a test
1.2 The values stated in SI units are regarded as the
sieve that is inserted in the sieve holder of the air jet sieve
standard. The inch-pound equivalents may be approximate
apparatus. Air from a slowly-rotating nozzle located beneath
the sieve passes through the sieve to fluidize the sample for a
1.3 This standard does not purport to address all of the
predetermined period of time. The exit air flow removes
safety concerns, if any, associated with its use. It is the
undersized particles downward through the test sieve to a
responsibility of the user of this standard to establish appro-
vacuum canister.The mass of hydraulic cement retained on the
priate safety, health, and environmental practices and deter-
test sieve is determined, and the percent passing the test sieve
mine the applicability of regulatory limitations prior to use.
is calculated.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Significance and Use
ization established in the Decision on Principles for the
5.1 This test method provides data for assessing compliance
Development of International Standards, Guides and Recom-
where specifications limit the amount of material retained
mendations issued by the World Trade Organization Technical
when sieved on a 45-µm (No. 325) sieve.
Barriers to Trade (TBT) Committee.
6. Apparatus
2. Referenced Documents
6.1 Air Jet Sieving Apparatus:
2.1 ASTM Standards:
6.2 Sieve:
C219 Terminology Relating to Hydraulic and Other Inor-
6.2.1 Sieve Frame—The sieve frame shall be of a rigid
ganic Cements
material, preferably bronze or stainless steel, not subject to
C430 Test Method for Fineness of Hydraulic Cement by the
corrosion (for purposes of the cleaning procedure). The frame
45-µm (No. 325) Sieve
shall be circular and it shall be 203 mm (8 in.) in diameter to
E11 Specification for Woven Wire Test Sieve Cloth and Test
fit the air jet sieving apparatus.
Sieves
6.2.2 Sieve Cloth—The sieve frame shall be fitted with a
E177 Practice for Use of the Terms Precision and Bias in
45-µm (No. 325) stainless steel AISI Type 304 woven-wire
ASTM Test Methods
sieve cloth, conforming to the requirements of E11. The sieve
E691 Practice for Conducting an Interlaboratory Study to
cloth shall be mounted in the frame without distortion, loose-
Determine the Precision of a Test Method
ness or wrinkling. The joint between the cloth and frame shall
be smooth and without holes.
3. Terminology
6.3 Sieve Cover—A cover made of hard plastic or metal is
3.1 Definitions:
necessary for covering the sieve and achieving a seal. The seal
needs to be such that the apparatus can maintain a vacuum
pressure throughout the test period.
1
This test method is under the jurisdiction ofASTM Committee C01 on Cement
6.4 Vacuum Device—A canister type vacuum cleaner that
and is the direct responsibility of Subcommittee C01.25 on Fineness.
can achieve and maintain at least 2.5 kPa (254 mm or 10-in.
Current edition approved June 15, 2019. Published July 2019. DOI: 10.1520/
C1891-19E01. water column) vacuum.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1891 − 19
6.5 Timer—Adevicecapableoftimingthetestperiodwithin with an anti-static dryer cloth has been found to reduce
1 s. It can be attached and automatic, or such that it lets the material held by static charges.
operator know when to start and stop the apparatus.
8.5 Remove the sieve from the air jet sieve apparatus and
6.6 Vacuum Gauge—A gauge capable of indicating the carefully transfer the residual material to a weigh paper or pan
vacuum pressure below the sieve within 0.1 kPa (12.7-mm or and determine the mass of the residue to the nearest 0.01 g.
NOTE 3—The ideal time to run the apparatus can be determined by
0.5-in
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: C1891 − 19 C1891 − 19
Standard Test Method for
Fineness of Hydraulic Cement by Air Jet Sieving at 45-μm
1
(No. 325)
This standard is issued under the fixed designation C1891; 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.
1
ε NOTE—Added research report footnote to Section 11 and corrected formatting of Appendix X1 and Appendix X2 edito-
rially in January 2020.
1. Scope
1.1 This test method covers the determination of the fineness of hydraulic cement by means of air jet sieving using a 45-μm
(No. 325) sieve by Air Jet sieving.
1.2 The values stated in SI units are regarded as the standard. The inch-pound equivalents 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
C219 Terminology Relating to Hydraulic and Other Inorganic Cements
C430 Test Method for Fineness of Hydraulic Cement by the 45-μm (No. 325) Sieve
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions:
3.1.1 Terms relating to this test method are defined in Terminology C219.
4. Summary of Test Method
4.1 A known mass of hydraulic cement is placed on a test sieve that is inserted in the sieve holder of the air jet sieve apparatus.
Air from a slowly-rotating nozzle located beneath the sieve passes through the sieve to fluidize the sample for a predetermined
period of time. The exit air flow removes undersized particles downward through the test sieve to a vacuum canister. The mass
of hydraulic cement retained on the test sieve is determined, and the percent passing the test sieve is calculated.
5. Significance and Use
5.1 This test method provides data for assessing compliance where specifications limit the amount of material retained when
sieved on a 45-μm (No. 325) sieve.
6. Apparatus
6.1 Air Jet Sieving Apparatus:
6.2 Sieve:
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.25 on Fineness.
Current edition approved June 15, 2019. Published July 2019. DOI: 10.1520/C1891-19.10.1520/C1891-19E01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
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C1891 − 19
6.2.1 Sieve Frame—The sieve frame shall be of a rigid material, preferably bronze or stainless steel, not subject to corrosion
(for purposes of the cleaning procedure). The frame shall be circular and it shall be 203 mm (8 in.) in diameter to fit the air jet
sieving apparatus.
6.2.2 Sieve Cloth—The sieve frame shall be fitted with a 45-μm (No. 325) stainless steel AISI Type 304 woven-wire sieve cloth,
conforming to the requirements of E11. The sieve cloth shall be mounted in the frame without distortion, looseness or wrinkling.
The joint between the cloth and frame shall be smooth and without holes.
6.3 Sieve Cover—A cover made of hard plastic or metal is necessary for covering the sieve and achieving a seal. The seal needs
to be such that the apparatus can maintain a vacuum pressure throughout the test period.
6.4 Vacuum Device—A canister type vacuum cleaner that can achieve and maintain at least 2.5 kPa (254 mm or 10-in. water
column) vacuum.
6.5 Timer—A device capable of timing the test period within 1 s. It can be attached and automatic, or such that it lets the operator
know when to start and stop the apparatus.
6.6 Vacuum Gauge—A gauge capable of indicating the vacuum pressure below the sieve within 0.1 kPa (12.7-mm or 0.5-in.
water column).
6.7 Brush—A brush wit
...
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