ASTM C265-08
(Test Method)Standard Test Method for Water-Extractable Sulfate in Hydrated Hydraulic Cement Mortar (Withdrawn 2017)
Standard Test Method for Water-Extractable Sulfate in Hydrated Hydraulic Cement Mortar (Withdrawn 2017)
SIGNIFICANCE AND USE
Excess soluble sulfate ions in hardened cement can result in reduced durability. This test method is intended to show whether calcium sulfate has been used in cement in such amount to leave excess soluble sulfate in hardened mortar. The test method is used to establish compliance in Specification C 595 for those cements in which optimized SO3 exceeds the table limit. This test method also can provide useful information on other hydraulic cements, such as those specified in Specifications C 150 and C 1157.
When this test method is used in conjunction with Test Method C 563, use the appropriate age of test specimens (24 h, 3 days, or 7 days) to coincide with the age of specimens used in Test Method C 563.
SCOPE
1.1 This test method covers the measurement of water-extractable SO3 in hardened hydraulic cement mortar. This measurement is assumed to represent unreacted, available sulfate remaining in the mortar.
1.1.1 Warning—Fresh hydraulic cementious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 Values in SI units were obtained by measurement in SI units or by appropriate conversion using the Rules for Conversion and Rounding given in IEEE/ASTM SI-10 Standard of measurements made in other units.
1.4 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.
WITHDRAWN RATIONALE
This test method covers the measurement of water-extractable SO3 in hardened hydraulic cement mortar. This measurement is assumed to represent unreacted, available sulfate remaining in the mortar.
Formerly under the jurisdiction of ASTM Committee C01 on Cement, this test method was withdrawn in January 2017 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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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
Designation: C265 − 08
Standard Test Method for
Water-Extractable Sulfate in Hydrated Hydraulic Cement
1
Mortar
This standard is issued under the fixed designation C265; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* C563 Test Method for Approximation of Optimum SO in
3
Hydraulic Cement Using Compressive Strength
1.1 This test method covers the measurement of water-
C595 Specification for Blended Hydraulic Cements
extractable SO in hardened hydraulic cement mortar. This
3
C778 Specification for Sand
measurement is assumed to represent unreacted, available
C1157 Performance Specification for Hydraulic Cement
sulfate remaining in the mortar.
D1193 Specification for Reagent Water
1.1.1 Warning—Fresh hydraulic cementious mixtures are
E11 Specification for Woven Wire Test Sieve Cloth and Test
caustic and may cause chemical burns to skin and tissue upon
Sieves
prolonged exposure.
IEEE/ASTM SI-10 Standard for Use of the International
1.2 The values stated in SI units are to be regarded as the
System of Units (SI): The Modern Metric System
standard. The values given in parentheses are for information
only.
3. Terminology
1.3 Values in SI units were obtained by measurement in SI
3.1 Definitions—The terms used in this test method are
units or by appropriate conversion using the Rules for Conver-
defined in accordance with Terminology C219.
sion and Rounding given in Standard IEEE/ASTM SI-10 of
measurements made in other units.
4. Significance and Use
1.4 This standard does not purport to address all of the
4.1 Excess soluble sulfate ions in hardened cement can
safety concerns, if any, associated with its use. It is the
result in reduced durability. This test method is intended to
responsibility of the user of this standard to establish appro-
show whether calcium sulfate has been used in cement in such
priate safety and health practices and determine the applica-
amount to leave excess soluble sulfate in hardened mortar. The
bility of regulatory limitations prior to use.
test method is used to establish compliance in Specification
C595 for those cements in which optimized SO exceeds the
2. Referenced Documents 3
table limit. This test method also can provide useful informa-
2
2.1 ASTM Standards:
tion on other hydraulic cements, such as those specified in
C109/C109M Test Method for Compressive Strength of
Specifications C150 and C1157.
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
4.2 When this test method is used in conjunction with Test
Specimens)
Method C563, use the appropriate age of test specimens (24 h,
C114 Test Methods for Chemical Analysis of Hydraulic
3 days, or 7 days) to coincide with the age of specimens used
Cement
in Test Method C563.
C150 Specification for Portland Cement
C219 Terminology Relating to Hydraulic Cement
C305 Practice for Mechanical Mixing of Hydraulic Cement 5. Apparatus
Pastes and Mortars of Plastic Consistency
5.1 Sieve—A 2.36-mm (No.8) sieve conforming to Specifi-
cation E11.
1 5.2 Mixer, Bowl, and Paddle—An electrically driven me-
This test method is under the jurisdiction ofASTM Committee C01 on Cement
and is the direct responsibility of Subcommittee C01.28 on Sulfate Content chanical mixer equipped with a paddle and bowl, as specified
Current edition approved May 1, 2008. Published June 2008. Originally
in the Apparatus section of Practice C305.
approved in 1951. Last previous edition approved in 2006 as C265 – 06. DOI:
10.1520/C0265-08.
5.3 Polyethylene Containers—Watertight polyethylene bags
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
of 1-L (1-qt) capacity or approximately 360-mm (14-in.) sheet
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
material, made using polyethylene at least 0.10-mm (0.004-in.)
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. in thickness.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C265 − 08
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5.4 Mortar and Pestle—Amortar of 1.5-L(1 ⁄2-qt) size, and 10.2 Filter the slurry on a dry No. 2A Büchner funnel with
a pestle, both of which shall be iron or porcelain. the aid of suction using a dry 90-mm, medium, ashless paper.
Complete filtration within a period of 2 min. Filter again,
5.5 Water Bath—Awater bath thermostatically controlled at
whether the filtrate is turbid or not, using a new dry filter paper
23.0 6 0.15 °C .
without suction.
6. Reagen
...
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