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ASTM C1591-04

(Test Method)

Standard Test Method for Determination of the Modulus of Elasticity of AAC (Withdrawn 2013)

Standard Test Method for Determination of the Modulus of Elasticity of AAC (Withdrawn 2013)

SIGNIFICANCE AND USE
This test method is intended to provide simplified and economical means for obtaining data on the chord modulus of elasticity developed for different types of AAC grades.
SCOPE
1.1 This procedure covers the determination of the modulus of elasticity of Autoclaved Aerated Concrete (AAC) in compression by determining the stress-strain behavior. AAC is a cementitious product based on calcium silicate hydrates in which low density is attained by the inclusion of an agent resulting in macroscopic voids, and is subjected to high pressure steam curing.
Note 1 - Installed units covered by this standard must be protected against direct exposure to moisture using a coating material accepted by the AAC manufacturer.
1.2 AAC tested in accordance with this test method shall comply with Specification C 1386.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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WITHDRAWN RATIONALE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 procedure covers the determination of the modulus of elasticity of Autoclaved Aerated Concrete (AAC) in compression by determining the stress-strain behavior. AAC is a cementitious product based on calcium silicate hydrates in which low density is attained by the inclusion of an agent resulting in macroscopic voids, and is subjected to high pressure steam curing.
Formerly under the jurisdiction of Committee C27 on Precast Concrete Products, this test method was withdrawn in January 2013 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by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.

General Information

Status
Withdrawn
Publication Date
30-Nov-2004
Withdrawal Date
03-Jan-2013
ICS
91.100.30 - Concrete and concrete products
Technical Committee
C27 - Precast Concrete Products
Drafting Committee
C27.60 - Precast Autoclaved Aerated Concrete
Current Stage
Ref Project

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ASTM C1591-04 - Standard Test Method for Determination of the Modulus of Elasticity of AAC (Withdrawn 2013)ASTM C1591-04 - Standard Test Method for Determination of the Modulus of Elasticity of AAC (Withdrawn 2013)
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ASTM C1591-04 - Standard Test Method for Determination of the Modulus of Elasticity of AAC (Withdrawn 2013)
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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: C1591 − 04
StandardTest Method for
1
Determination of the Modulus of Elasticity of AAC
This standard is issued under the fixed designation C1591; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Significance and Use
1.1 This procedure covers the determination of the modulus 3.1 This test method is intended to provide simplified and
of elasticity of Autoclaved Aerated Concrete (AAC) in com-
economical means for obtaining data on the chord modulus of
pression by determining the stress-strain behavior. AAC is a
elasticity developed for different types of AAC grades.
cementitious product based on calcium silicate hydrates in
which low density is attained by the inclusion of an agent
4. Apparatus
resulting in macroscopic voids, and is subjected to high
4.1 Testing Machine, conforming to the requirements of
pressure steam curing.
PracticesE4(Constant-Rateof-TraverseCRT-TypeTestingMa-
NOTE 1—Installed units covered by this standard must be protected
chine section). The spherical head and bearing blocks shall
against direct exposure to moisture using a coating material accepted by
confirm to the Apparatus Section of Test Method C39/C39M.
the AAC manufacturer.
1.2 AAC tested in accordance with this test method shall
4.2 Calipers—Calipers shall allow a reading with a preci-
comply with Specification C1386.
sion of 0.1 mm.
1.3 The values stated in SI units are to be regarded as the 4.3 Drying Ovens—Two ovens typically are used for this
standard. The values given in parentheses are for information
test procedure. One maintained at a temperature of 105 6 5°C
only.
and another maintained at a temperature of 70 6 5°C.
1.4 This standard does not purport to address all of the
4.4 Compressometer, may be used to determine the strain
safety concerns, if any, associated with its use. It is the
behavior of the specimen during compression and shall have a
responsibility of the user of this standard to establish appro-
precision of 0.001 mm.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Specimens
5.1 Shape of Specimens—The modulus of elasticity is de-
2. Referenced Documents
termined on prisms having the dimensions of 100 mm (4 in.)
2
2.1 ASTM Standards:
by 100 mm (4 in.) by 200 mm (8 in.). Prisms of other sizes or
C39/C39MTest Method for Compressive Strength of Cylin-
cylindrical specimens can be used provided that the width
drical Concrete Specimens
(diameter) of such other specimens is not less than 75 mm (3
C1386Specification for Precast Autoclaved Aerated Con-
in.) and the ratio between the height and the width shall be 2.
crete (AAC) Wall Construction Units
5.2 Number and Orientation of Specimens—Atest set shall
E4Practices for Force Verification of Testing Machines
consist of three specimens. Whenever possible one specimen
E575Practice for Reporting Data from Structural Tests of
shall be prepared for the upper third of the product, one from
Building Constructions, Elements, Connections, and As-
the middle third, and one from the bottom third as determined
semblies
by the direction of rising of the mass during manufacturing.
Specimens are prepared such that the loading is applied to the
100 mm (4 in.) by 100 mm (4 in.) surface and is perpendicular
1
This test method is under the jurisdiction ofASTM Committee C27 on Precast
to the direction of rising during manufacture.
Concrete Products and is the direct responsibility of Subcommittee C27.60 on
Precast Autoclaved Aerated Concrete.
5.3 Preparation of the Specimens—The specimens shall be
Current edition approved Dec. 1, 2004. Published January 2005. DOI: 10.1520/
C1591-04.
dried to a moisture content between 5 and 15% by weight.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Afterdryingandbeforetestingthespecimensshallbestoredat
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
room temperature until the specimens have reached an equi-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. librium temperature.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1591 − 04
6. Procedure 7. Calculations
6.1 Density and Moisture Content Determination—The dry 7.1 The compressive load (force) in each case shall be
density of comparable specimens and the moisture content of converted to a compressive stress using the formula:
the test specimens shall be determined according to Spec
...

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