ASTM C1038-01e1

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Designation: C 1038 – 01
Standard Test Method for
Expansion of Hydraulic Cement Mortar Bars Stored in
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Water
This standard is issued under the fixed designation C 1038; 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.
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e NOTE—Section 8.1 was revised editorially in August 2003 to correct a typographical error in a value.
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1. Scope D 1193 Specification for Reagent Water
1.1 This test method covers the determination of the expan-
3. Significance and Use
sion of mortar bars made using hydraulic cement, of which
3.1 This test method is used to determine the amount of
sulfate is an integral part.
expansion of a mortar bar when it is stored in water. The
1.1.1 Warning: Fresh hydraulic cementitious mixtures are
amount of mortar-bar expansion may relate to the amount of
caustic and may cause chemical burns to skin and tissue upon
sulfate in the cement; expansion may become excessive when
prolonged exposure.
the cement contains too much sulfate.
1.2 The values stated in SI units are to be regarded as the
3.2 Some cement specifications limit the amount of sulfate
standard. Values in parentheses are for information only.
contained in hydraulic cement by requiring that the amount of
1.3 This standard does not purport to address all of the
expansion in water not exceed a specified value.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Apparatus
priate safety and health practices and determine the applica-
4.1 Reference Masses and Mass-Determining Devices, con-
bility of regulatory limitations prior to use.
forming to the requirements of Specification C 1005. Evaluate
the device for precision and bias at a total load of 2 Kg.
2. Referenced Documents
4.2 Glass Graduates, Molds, and Length Comparator, con-
2.1 ASTM Standards:
forming to the requirements of Specification C 490.
C 109/C 109M Test Method for Compressive Strength of
4.3 Moist Cabinet or Room, conforming to the requirements
Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube
2 of Specification C 511.
Specimens)
4.4 Mixer, Bowl, and Paddle, conforming to the require-
C 230/C 230M Specification for Flow Table for Use in Tests
2 ments of Practice C 305.
of Hydraulic Cement
4.5 Trowel and Tamper, conforming to the requirements of
C 305 Practice for Mechanical Mixing of Hydraulic Cement
2 Test Method C 109.
Pastes and Mortars of Plastic Consistency
C 490 Practice for Use of Apparatus for the Determination
5. Temperature and Relative Humidity
of Length Change of Hardened Cement Paste, Mortar, and
2 5.1 Molding Room, Dry Materials, and Mixing Water—
Concrete
Maintain the temperature of the molding room, dry materials,
C 511 Specification for Moist Cabinets, Moist Rooms, and
and mixing water at 23.0 6 4.0°C, and maintain the relative
Water Storage Tanks Used in the Testing of Hydraulic
humidity of the molding room at not less than 50 %.
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Cements and Concretes
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C 778 Specification for Standard Sand
6. Reagents and Materials
C 1005 Specification for Reference Masses and Devices for
6.1 Mixing Water—Potable water is satisfactory for routine
Determining Mass and Volume for Use in the Physical
2 tests. For all cooperative tests and in case of dispute, use
Testing of Hydraulic Cements
reagent water conforming to the numerical limits of Type III of
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C 1437 Test Method for Flow of Hydraulic Cement Mortar
Specification D 1193.
6.2 Graded Sand—Sand for making the test specimens shall
conform to the requirements for graded standard sand in
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This test method is under the jurisdiction of ASTM Committee C01 on Cement
Specification C 778.
and is the direct responsibility of Subcommittee C01.28 on Sulfate Content.
Current edition approved Aug. 10, 2001. Published October 2001. Originally
published as C 1038 – 85. Last previous edition C 1038 – 95.
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Annual Book of ASTM Standards, Vol 04.01. Annual Book of ASTM Standards, Vol 11.01.
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C1038–01
7. Procedure 8.2 Subsequent Storage—After the initial measurement,
store the test specimens in saturated lime water in a tank in the
7.1 Number and Dimensions of Test Specimens—Make four
moist cabinet or moist room. Cover the specimens with at least
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25 by 25 by 285-mm, or 1 by 1 by 11 ⁄4-in. test specimens for
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5-mm ( ⁄4-in.) of water during storage. Keep the storage water
each cement. The effective gage length of these specimens is
clean by changing as necessary. Use a tank and lime w
...