ASTM C191-04b

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.
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.
Note 1—For the method for determining the time of setting by Gillmore needles, see Test Method C266.

General Information

• Status: Historical
• Publication Date: 31-Oct-2004
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.30 - Time of Set

Relations

• Replaces: ASTM C191-04a - Standard Test Method for Time of Setting of Hydraulic Cement by Vicat Needle
• Effective Date: 01-Nov-2004
• Replaced By: ASTM C191-07 - Standard Test Methods for Time of Setting of Hydraulic Cement by Vicat Needle
• Effective Date: 15-Jul-2007
• 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: 01-Nov-2004
• Referred By: ASTM D8030/D8030M-23 - Standard Practice for Sample Preparation for GCCM
• Effective Date: 01-Nov-2004
• Referred By: ASTM C465-23 - Standard Specification for Processing Additions for Use in the Manufacture<brk/> of Hydraulic Cements
• Effective Date: 01-Nov-2004
• Referred By: ASTM C1157/C1157M-23 - Standard Performance Specification for Hydraulic Cement
• Effective Date: 01-Nov-2004
• Referred By: ASTM C183/C183M-23 - Standard Practice for Sampling and the Amount of Testing of Hydraulic Cement
• Effective Date: 01-Nov-2004
• Referred By: ASTM C1222-23 - Standard Practice for Evaluation of Laboratories Testing Hydraulic Cement
• Effective Date: 01-Nov-2004
• Referred By: ASTM C887-20 - Standard Specification for Packaged, Dry, Combined Materials for Surface Bonding Mortar
• Effective Date: 01-Nov-2004
• Referred By: ASTM C1856/C1856M-17 - Standard Practice for Fabricating and Testing Specimens of Ultra-High Performance Concrete
• Effective Date: 01-Nov-2004
• Referred By: ASTM C150/C150M-22 - Standard Specification for Portland Cement
• Effective Date: 01-Nov-2004
• Referred By: ASTM C953-17 - Standard Test Method for Time of Setting of Grouts for Preplaced-Aggregate Concrete in the Laboratory
• Effective Date: 01-Nov-2004
• Referred By: ASTM C10/C10M-19 - Standard Specification for Natural Cement
• Effective Date: 01-Nov-2004
• Referred By: ASTM C226-22 - Standard Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement
• Effective Date: 01-Nov-2004
• Referred By: ASTM C1698-19 - Standard Test Method for Autogenous Strain of Cement Paste and Mortar
• Effective Date: 01-Nov-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
American Association State
Designation:C191–04b Highway and Transportation Officials Standard
AASHTO No.: T131
Standard Test Methods for
1
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 C 151 Test Method for Autoclave Expansion of Portland
Cement
1.1 These test methods determine the time of setting of
C 183 Practice for Sampling and the Amount of Testing of
hydraulic cement by means of the Vicat needle. Two test
Hydraulic Cement
methods are given; Method A is the Reference Test Method
C 187 Test Method for Normal Consistency of Hydraulic
using the manually operated standard Vicat apparatus, while
Cement
Method B permits the use of an automatic Vicat machine that
C 219 Terminology Relating to Hydraulic Cement
has, in accordance with the qualification requirements of this
C 266 Test Method for Time of Setting of Hydraulic-
method, demonstrated acceptable performance.
Cement Paste by Gillmore Needles
1.2 The values stated in SI units are to be regarded as the
C 305 PracticeforMechanicalMixingofHydraulicCement
standard. Values in parentheses are for information only.
Pastes and Mortars of Plastic Consistency
1.3 This standard does not purport to address all of the
C 511 Specification for Mixing Rooms, Moist Cabinets,
safety concerns, if any, associated with its use. It is the
Moist Rooms, and Water Storage Tanks Used in the
responsibility of the user of this standard to establish appro-
Testing of Hydraulic Cements and Concretes
priate safety and health practices and determine the applica-
C 595 Specification for Blended Hydraulic Cements
bility of regulatory limitations prior to use. See 1.4 for a
C 1005 Specification for Reference Masses and Devices for
specific warning statement.
Determining Mass and Volume for Use in the Physical
1.4 Warning—Fresh hydraulic cementitious mixtures are
Testing of Hydraulic Cements
caustic and may cause chemical burns to skin and tissue upon
C 1157 Performance Specification for Blended Hydraulic
prolonged exposure. The use of gloves, protective clothing,
Cement
and eye protection is recommended. Wash contact area with
D 1193 Specification for Reagent Water
copious amounts of water after contact. Wash eyes for a
minimum of 15 min. Avoid exposure of the body to clothing
3. Terminology
saturated with the liquid phase of the unhardened material.
2 3.1 Definitions—The terms used in this test method are
Remove contaminated clothing immediately after exposure.
defined in accordance with Terminology C 219.
1.5 The text of this standard references notes and footnotes
which provide explanatory material.These notes and footnotes
4. Summary of Test Method
(excluding those in tables and figures) shall not be considered
4.1 A paste that is proportioned and mixed to normal
as requirements of the standard.
consistency, as described in the Test Method C 187, is molded
NOTE 1—For the method for determining the time of setting by
and placed in a moist cabinet and allowed to start setting.
Gillmore needles, see Test Method C 266.
Periodic penetration tests are performed on this paste by
allowing a 1-mm Vicat needle to settle into this paste. The
2. Referenced Documents
Vicat initial time of setting is the time elapsed between the
3
2.1 ASTM Standards:
initial contact of cement and water and the time when the
C 150 Specification for Portland Cement
penetration is measured or calculated to be 25 mm. The Vicat
final time of setting is the time elapsed between initial contact
1 of cement and water and the time when the needle does not
These test methods are under the jurisdiction of ASTM Committee C01 on
Cement and is the direct responsibility of Subcommittee C01.30 on Time of Set. leave a complete circular impression in the paste surface.
Current edition approved Nov. 1, 2004. Published November 2004. Originally
approved in 1944. Last previous edition approved in 2004 as C 191 – 04a.
2
Section on Safety, Manual of Cement Testing, Annual Book of ASTM
Standards, Vol 04.01.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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C191–04b
5. Significance and Use 8. Sampling
8.1 When the test is required for acceptance testing, sa
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