ASTM C266-04

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Designation:C266–04
Standard Test Method for
Time of Setting of Hydraulic-Cement Paste by Gillmore
1
Needles
This standard is issued under the fixed designation C 266; 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 219 Terminology Relating to Hydraulic Cement
C 305 PracticeforMechanicalMixingofHydraulicCement
1.1 This test method covers the determination of the time of
Pastes and Mortars of Plastic Consistency
setting of hydraulic-cement paste by means of the Gillmore
C 511 Specification for Moist Cabinets, Moist Rooms, and
needles.
Water Storage Tanks Used in the Testing of Hydraulic
1.2 The values stated in SI units are to be regarded as the
Cements and Concretes
standard. The values given in parentheses are for information
C 670 Practice for Preparing Precision and Bias Statements
only.
for Test Methods for Construction Materials
1.3 This standard does not purport to address all of the
C 1005 Specification for Reference Masses and Devices for
safety concerns, if any, associated with its use. It is the
Determining Mass and Volume for Use in the Physical
responsibility of the user of this standard to establish appro-
Testing of Hydraulic Cements
priate safety and health practices and determine the applica-
D 1193 Specification for Reagent Water
bility of regulatory limitations prior to use.
Warning: Fresh hydraulic cementitious mixtures are caustic
3. Terminology
and may cause chemical burns to skin and tissue upon
3.1 Refer to Terminology C 219 for definitions of terms.
prolonged exposure. The use of gloves, protective clothing,
and eye protection is recommended. Wash contact area with
4. Summary of Test Method
copious amounts of water after contact. Wash eyes for a
4.1 Sufficient water is added to the cement that is being
minimum of 15 min. Avoid exposure of the body to clothing
tested to produce a paste of normal consistency.Aspecimen is
saturated with the liquid phase of the unhardened material.
molded from this paste and is tested for time of setting by
Remove contaminated clothing immediately after exposure.
means of the Gillmore initial and final needles.The initial time
1.4 The text of this standard references notes and footnotes
of setting is the time required for the test specimen to bear the
which provide explanatory material. These notes and footnotes
initial Gillmore needle without appreciable indentation, while
(excluding those in tables and figures) shall not be considered
the time required for the test specimen to bear the final
as requirements of the standard.
Gillmore needle without appreciable indentation is the final
2. Referenced Documents time of setting.
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2.1 ASTM Standards:
5. Significance and Use
C 151 Test Method for Autoclave Expansion of Portland
5.1 The purpose of this test method is to establish whether
Cement
a cement complies with a specification limit on Gillmore time
C 183 Practice for Sampling and the Amount of Testing of
of setting.
Hydraulic Cement
C 187 Test Method for Normal Consistency of Hydraulic
6. Apparatus
Cement
6.1 Flat Trowel, having a sharpened straight-edged steel
blade 100 to 150 mm in length.
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6.2 Mixer, Bowl, Paddle, and Scraper, conforming to the
This test method is under the jurisdiction ofASTM Committee C01 on Cement
and is the direct responsibility of Subcommittee C01.30 on Time of Set.
requirements of Practice C 305.
Current edition approved Nov. 1, 2004. Published November 2004. Originally
6.3 Glass Graduates, 200 or 250 mL capacity, conforming
approved in 1951. Last previous edition approved in 1999 as C 266 – 99.
2 to the requirements of Practice C 1005.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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C266–04
6.4 Mass Determining Devices, conforming to the require- then form the pat by drawing the trowel from the outer edge
ments of Specification C 1005. The devices for determining toward the center, then flattening the top. After making, place
mass shall be evaluated for precision and bias at a total load of the pat in the moist cabinet or moist room and allow it to
1000 g. remain there except when the determinations of time of setting
6.5 Plane Non-absorptive Plates, 100 mm 6 5 mm square, are being made.
of similar planeness, corrosivity, and absorptivity to that of 1
...