ASTM C191-01a

Standard Test Method for Time of Setting of Hydraulic Cement by Vicat Needle

SCOPE
1.1 These methods determine the time of setting of hydraulic cement by means of the Vicat needle. Two test methods are given; Method A is the Reference Test Method using the manually operated standard Vicat apparatus, while Method B permits the use of an automatic Vicat machine that has, in accordance with the qualification requirements of this method, demonstrated acceptable performance.
Note 1—For the method for determining time of setting by Gillmore needles, see Test Method C 266.
1.2 The values stated in SI units are to be regarded as the standard. Values in parentheses are for information only.
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. See 1.4 for a specific warning statement.
1.4 Warning: Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. The use of gloves, protective clothing, and eye protection is recommended. Wash contact area with copious amounts of water after contact. Wash eyes for a minimum of 15 min. Avoid exposure of the body to clothing saturated with the liquid phase of the unhardened material. Remove contaminated clothing immediately after exposure.

General Information

• Status: Historical
• Publication Date: 09-Nov-2001
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.30 - Time of Set

Relations

• Replaces: ASTM C191-01 - Standard Test Method for Time of Setting of Hydraulic Cement by Vicat Needle
• Effective Date: 10-Nov-2001
• Replaced By: ASTM C191-03 - Standard Test Method for Time of Setting of Hydraulic Cement by Vicat Needle
• Effective Date: 10-Jul-2003
• Referred By: ASTM C1856/C1856M-17 - Standard Practice for Fabricating and Testing Specimens of Ultra-High Performance Concrete
• Effective Date: 10-Nov-2001
• Referred By: ASTM C1857/C1857M-19 - Standard Test Method for Evaluating the Adhesion (Pull-Off) Strength of Concrete Repair and Overlay Mortar
• Effective Date: 10-Nov-2001
• Referred By: ASTM C10/C10M-19 - Standard Specification for Natural Cement
• Effective Date: 10-Nov-2001
• Referred By: ASTM D5759-12(2020) - Standard Guide for Characterization of Coal Fly Ash and Clean Coal Combustion Fly Ash for Potential Uses
• Effective Date: 10-Nov-2001
• Referred By: ASTM C1708/C1708M-19 - Standard Test Methods for Self-leveling Mortars Containing Hydraulic Cements
• Effective Date: 10-Nov-2001
• Referred By: ASTM C887-20 - Standard Specification for Packaged, Dry, Combined Materials for Surface Bonding Mortar
• Effective Date: 10-Nov-2001
• Referred By: ASTM C141/C141M-14(2022) - Standard Specification for Hydrated Hydraulic Lime for Structural Purposes
• Effective Date: 10-Nov-2001
• Referred By: ASTM C150/C150M-22 - Standard Specification for Portland Cement
• Effective Date: 10-Nov-2001
• Referred By: ASTM D8030/D8030M-23 - Standard Practice for Sample Preparation for GCCM
• Effective Date: 10-Nov-2001
• Referred By: ASTM C226-22 - Standard Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement
• Effective Date: 10-Nov-2001
• Referred By: ASTM C183/C183M-23 - Standard Practice for Sampling and the Amount of Testing of Hydraulic Cement
• Effective Date: 10-Nov-2001
• Referred By: ASTM C465-23 - Standard Specification for Processing Additions for Use in the Manufacture<brk/> of Hydraulic Cements
• Effective Date: 10-Nov-2001
• Referred By: ASTM C595/C595M-23 - Standard Specification for Blended Hydraulic Cements
• Effective Date: 10-Nov-2001

Standards Content (Sample)

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.
American Association State
Designation: C 191 – 01a
Highway and Transportation Officials Standard
AASHTO No.: T131
Standard Test Method for
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Time of Setting of Hydraulic Cement by Vicat Needle
This standard is issued under the fixed designation C 191; 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 of Length Change of Hardened Cement Paste, Mortar, and
2
Concrete
1.1 These methods determine the time of setting of hydrau-
2
C 595 Specification for Blended Hydraulic Cements
lic cement by means of the Vicat needle. Two test methods are
C 1005 Specification for Reference Masses and Devices for
given; Method A is the Reference Test Method using the
Determining Mass and Volume for Use in the Physical
manually operated standard Vicat apparatus, while Method B
2
Testing of Hydraulic Cements
permits the use of an automatic Vicat machine that has, in
C 1157 Performance Specification for Blended Hydraulic
accordance with the qualification requirements of this method,
2
Cement
demonstrated acceptable performance.
NOTE 1—For the method for determining time of setting by Gillmore 3. Apparatus
needles, see Test Method C 266.
3.1 Reference Masses and Devices for Determining Mass,
1.2 The values stated in SI units are to be regarded as the
conforming to the requirements of Specification C 1005. The
standard. Values in parentheses are for information only.
devices for determining mass shall be evaluated for precision
1.3 This standard does not purport to address all of the
and bias at a total load of 1 kg.
safety concerns, if any, associated with its use. It is the
3.2 Glass Graduates, 200 or 250-mL capacity, and conform-
responsibility of the user of this standard to establish appro-
ing to the requirements of Specification C 490.
priate safety and health practices and determine the applica-
4. Temperature and Humidity
bility of regulatory limitations prior to use. See 1.4 for a
specific warning statement. 4.1 The temperature of the air in the vicinity of the mixing
1.4 Warning: Fresh hydraulic cementitious mixtures are
slab, the dry cement, molds, and base plates shall be main-
caustic and may cause chemical burns to skin and tissue upon tained between 20 and 27.5°C (68 and 81.5°F). The tempera-
prolonged exposure. The use of gloves, protective clothing,
ture of the mixing water and of the moist closet or moist room
and eye protection is recommended. Wash contact area with shall not vary from 23°C (73.4°F) by more than 6 1.7°C (3°F).
copious amounts of water after contact. Wash eyes for a
4.2 The relative humidity of the laboratory shall be not less
minimum of 15 min. Avoid exposure of the body to clothing than 50 %. The moist closet or moist room shall be so
saturated with the liquid phase of the unhardened material.
constructed as to provide storage facilities for test specimens at
Remove contaminated clothing immediately after exposure. a relative humidity of not less than 90 %.
3
2. Referenced Documents 5. Preparation of Cement Paste
2.1 ASTM Standards:
5.1 Mix 650 g of cement with the percentage of mixing
2
C 150 Specification for Portland Cement water required for normal consistency following the procedure
C 187 Test Method for Normal Consistency of Hydraulic
described in Practice C 305. Distilled water is preferable and
2
Cement shall be used for all referee or cooperative tests.
C 266 Test Method for Time of Setting of Hydraulic-
5.2 At the option of the tester, use the test specimen used for
2
Cement Paste by Gillmore Needles determining normal consistency, or mix a new batch for
C 305 Practice for Mechanical Mixing of Hydraulic Cement
determining time of setting by Method A.
2
Pastes and Mortars of Plastic Consistency 5.3 For Method B, use the paste remaining from the batch
C 490 Practice for Use of Apparatus for the Determination
used for the normal consistency for molding the test specimen
or mix a new batch (see Note 2).
NOTE 2—The specimen used for the determination of the normal
consistency will have an irregular surface, making it unsuitable for the
1
This method is under the jurisdiction of ASTM Committee C01 on Cement and
automatic setting time apparatus.
is the direct responsibility of Subcommittee C01.30 on Time of Set.
Current edition approved Nov. 10, 2001. Published February 2002. Originally
published as C 191 – 44. Last previous edition C 191 – 01.
2
Annual Book of ASTM Standards, Vol 04.01. 3
See Test Method C 187.
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