ASTM C1012-95

Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution

General Information

• Status: Historical
• Publication Date: 31-Dec-1994
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.29 - Sulfate Resistance

Standards Content (Sample)

ASTM CLOL2 95 m 0759530 0562949 493 m
AMERICAN SOCIETY FOR TESTING AND MATERIALS
Designation: C 1012 - 95
1916 RaceSt. Philadelphia, Pa 19103
Reprinted írom the Annual Book of ASTM Standards. Copyright ASTM
If not listed in the current combined index. will appear in the next edtion
Standard Test Method for
Length Change of Hydraulic-Cement Mortars Exposed to a
Suifate Solution'
This standard is issued under the fixed designation C 1012; 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
supenscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope C 618 Specification for Fly Ash and Raw or Calcined
Natural Pozzolan for Use as a Mineral Admixture in
1.1 This test method covers the determination of length
Portland Cement Concrete3
change of mortar bars immersed in a sulfate solution. Mortar
C 684 Test Method for Making, Accelerated Curing, and
bars made using mortar described in Test Method C 109/
Testing of Concrete Compression Test Specimens3
C 109M are cured until they attain a compressive strength of
C 778 Specification for Standard Sand2
at least 20 MPa (2850 psi), as measured using cubes made of
C 9 17 Test Method for Evaluation of Cement Strength
the same mortar, before the bars are immersed.
Uniformity from a Single Source2
SI units are to be regarded as the
1.2 The values stated in
C 989 Specification for Ground Iron Blast-Fumace Slag
standard. The values shown in parentheses are for informa-
for Use in Concrete and Mortars'
tion purposes only.
D 1 193 Specification for Reagent Watef'
1.3 This standard does not purport to address all of the
E 18 Test Methods for Rockwell Hardness and Rockwell
safety concerns, if any, associated with its use. It is the
Superficial Hardness of Metallic Materialss
responsibility of the user of this standard to establish appro-
priaíe safely and health practices and determine the applica-
3. Significance and Use
bility of regulatory limitations prior to use.
3.1 This test method provides a means of assessing the
sulfate resistance of concretes and mortars made using
portland cement, blends of portland cement with pozzolans
2. Referenced Documents
or slags, and blended hydraulic cements. Method C452 is
2.1 ASTM Standards:
suitable for evaluating portland cements but not blended
C 109/C 109M Test Method for Compressive Strength of
cements or blends of portland cement with pozzolans or
Hydraulic Cement Mortars (Using 50-mm (2411.) Cube
slags.
Specimens)2
3.2 The standard exposure solution used in this test
C 150 Specification for Portland Cement3
method, unless otherwise directed, contains 352 moles of
C 157 Test Method for Length Change of Hardened
Na2S04 per m3 (50 g/L). Other sulfate concentrations or
Hydraulic-Cement Mortar and Concrete3
other sulfates such as MgS04 may be used to simulate the
C 2 15 Test Method for Fundamental Transverse, Longitu-
environmental exposure of interest. Further discussion of
dinal, and Torsional Frequencies of Concrete Speci-
these and other technical issues is given in the Appendix.
mens3
C 305 Practice for Mechanical Mixing of Hydraulic Ce-
4. Apparatus
ment Pastes and Mortars of Plastic Consistency2
4.1 Mixer, conforming to the requirements of Practice
C 348 Test Method for Flexural Strength of Hydraulic
C 305.
Cement Mortars2
4.2 Cube Molds, conforming to the requirements of Test
C 349 Test Method for Compressive Strength of Hydraulic
Method C 109.
Cement Mortars (Using Portions of Prisms Broken in
4.3 Bar Molds, conforming to the requirements of Speci-
Flexure)2
fication C 490.
C452 Test Method for Potential Expansion of Portland
4.4 Comparator, conforming to the requirements of Spec-
Cement Mortars Exposed to Sulfate2
ification C 490.
C 490 Practice for Use of Apparatus for the Determination
4.5 Containers-The containers in which the bars are
of Length Change of Hardened Cement Paste, Mortar,
immersed may be plastic, glass, ceramic, or metal. A means
and Concrete2
for supporting the bars shall be included so that no end or
C 595 Specification for Blended Hydraulic Cements2
side of a bar rests against the container. A lid shall be
C 597 Test Method for Pulse Velocity Through Concrete3
included that can be sealed on so that the sulfate solution
cannot evaporate.
4.6 Curing Tank, conforming to the requirements of Test
I This test method is under the jurisdiction of ASTM Committee C-1 on Cement
Method C 684.
and is the direct responsibility of Subcommittee 01.29 on Sulfate Resistance.
Current edition approved June 15, 1995. Published August 1995. Originally
as C 1012 - 1984. Last previous edition C 1012 - 89".
published
2 Annual Book of ASTM Standards, Vol 04.01. Annual Book of ASTM Standards, Vol 11.01.
Annual Book of ASTM Standards, Vol 03
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