ASTM C1693-11

Standard Specification for Autoclaved Aerated Concrete (AAC)

SCOPE
1.1 This specification covers autoclaved aerated concrete (AAC), 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 in which curing is carried out using high-pressure steam.
1.2 The raw materials used in the production of autoclaved aerated concrete are portland cement or blended cements, quartz sand, water, lime, gypsum or anhydrite, and an agent resulting in macroscopic voids. The quartz sand used as a raw material may be replaced by a siliceous fine aggregate other than sand, and usually is ground to a fine powder before use. Fly ash may be used as a sand replacement. The batched raw materials are mixed thoroughly together to form a slurry. The slurry is cast into steel molds. Due to the chemical reactions that take place within the slurry, the volume expands. After setting, and before hardening, the mass is machine cut into units of various sizes. The units then are steam-cured under pressure in autoclaves where the material is transformed into a hard calcium silicate.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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. See Section 6, 7, and 8.

General Information

• Status: Historical
• Publication Date: 14-Jul-2011
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C27 - Precast Concrete Products
• Drafting Committee: C27.60 - Precast Autoclaved Aerated Concrete

Relations

• Replaces: ASTM C1693-09e1 - Standard Specification for Autoclaved Aerated Concrete (AAC)
• Effective Date: 15-Jul-2011
• Replaced By: ASTM C1693-11(2017) - Standard Specification for Autoclaved Aerated Concrete (AAC)
• Effective Date: 01-Jun-2017
• Referred By: ASTM C1691-21 - Standard Specification for Unreinforced Autoclaved Aerated Concrete (AAC) Masonry Units
• Effective Date: 15-Jul-2011
• Referred By: ASTM C1686-09(2017) - Standard Practice for Installation and Testing of Reinforced Autoclaved Aerated Concrete (AAC) Units
• Effective Date: 15-Jul-2011
• Referred By: ASTM C1694-09(2017) - Standard Specification for Reinforced Autoclaved Aerated Concrete (AAC) Elements
• Effective Date: 15-Jul-2011
• Referred By: ASTM C1692-18 - Standard Practice for Construction and Testing of Autoclaved Aerated Concrete (AAC) Masonry
• Effective Date: 15-Jul-2011
• Referred By: ASTM C1232-21a - Standard Terminology for Masonry
• Effective Date: 15-Jul-2011

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:C1693 −11
Standard Specification for
1
Autoclaved Aerated Concrete (AAC)
This standard is issued under the fixed designation C1693; 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 C33 Specification for Concrete Aggregates
C39/C39M Test Method for Compressive Strength of Cylin-
1.1 This specification covers autoclaved aerated concrete
drical Concrete Specimens
(AAC), a cementitious product based on calcium silicate
C144 Specification for Aggregate for Masonry Mortar
hydrates in which low density is attained by the inclusion of an
C150 Specification for Portland Cement
agent resulting in macroscopic voids, and in which curing is
C332 Specification for Lightweight Aggregates for Insulat-
carried out using high-pressure steam.
ing Concrete
1.2 The raw materials used in the production of autoclaved
C595/C595M Specification for Blended Hydraulic Cements
aerated concrete are portland cement or blended cements,
C618 Specification for Coal Fly Ash and Raw or Calcined
quartz sand, water, lime, gypsum or anhydrite, and an agent
Natural Pozzolan for Use in Concrete
resulting in macroscopic voids. The quartz sand used as a raw
C1692 Practice for Construction and Testing of Autoclaved
material may be replaced by a siliceous fine aggregate other
Aerated Concrete (AAC) Masonry
than sand, and usually is ground to a fine powder before use.
E4 Practices for Force Verification of Testing Machines
Fly ash may be used as a sand replacement. The batched raw
E575 Practice for Reporting Data from Structural Tests of
materials are mixed thoroughly together to form a slurry. The
Building Constructions, Elements, Connections, and As-
slurry is cast into steel molds. Due to the chemical reactions
semblies
that take place within the slurry, the volume expands. After
setting, and before hardening, the mass is machine cut into
3. Classification
units of various sizes. The units then are steam-cured under
3.1 AAC units manufactured in accordance with this speci-
pressure in autoclaves where the material is transformed into a
fication are classified according to their strength class.
hard calcium silicate.
1.3 The values stated in inch-pound units are to be regarded
4. Materials and Manufacture
as standard. The values given in parentheses are mathematical
4.1 Raw Materials—Materials shall conform to the follow-
conversions to SI units that are provided for information only
ing applicable specifications:
and are not considered standard.
4.1.1 Portland Cement, Specification C150.
1.4 This standard does not purport to address all of the
4.1.2 Blended Cements, Specification C595/C595M.
safety concerns, if any, associated with its use. It is the
4.1.3 Pozzolan, Specification C618.
responsibility of the user of this standard to establish appro-
4.1.4 Gypsum, Specification C22/C22M.
priate safety and health practices and determine the applica-
4.1.5 Aggregates, Specifications C33, C144,or C332.
bility of regulatory limitations prior to use. See Section 6, 7,
and 8.
5. Physical Requirements
2. Referenced Documents
5.1 Compressive Strength—The compressive strength shall
2
2.1 ASTM Standards: be determined according to Section 6 and shall conform to the
C22/C22M Specification for Gypsum requirements of Table 1.
5.2 Dry Bulk Density—The dry bulk density shall be deter-
1
This specification is under the jurisdiction ofASTM Committee C27 on Precast
mined according to Section 7 and shall conform to the
Concrete Products and is the direct responsibility of Subcommittee C27.60 on
requirements of Table 1.
Precast Autoclaved Aerated Concrete.
Current edition approved July 15, 2011. Published August 2011. Originally
5.3 Drying Shrinkage—The drying shrinkage shall be deter-
ε1
approved in 2009. Last previous edition approved in 2009 as C1693 – 09 . DOI:
mined in accordance with Section 8, and shall conform to the
10.1520/C1693-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or requirements of Table 1.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.4 Modulus of Elasticity—If required, the modulus of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. elasticity shall be determined in accordance with Section 9.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1693−11
A
TABLE 1 Physical Requirements
Strength Class Compressive Strength, Nominal Dry Density Limits,
3 3
psi (MPa) Bulk Density, lb/ft (kg/m )
3 3
min lb/ft (kg/m ) Low
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation:C1693–09 Designation: C1693 – 11
Standard Specification for
1
Autoclaved Aerated Concrete (AAC)
This standard is issued under the fixed designation C1693; 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
´ NOTE—Subsection 3.1 was editorially corrected in December 2009.
1. Scope
1.1 This specification covers autoclaved aerated concrete (AAC), 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 in which curing is carried out using
high-pressure steam.
1.2 The raw materials used in the production of autoclaved aerated concrete are portland cement or blended cements, quartz
sand, water, lime, gypsum or anhydrite, and an agent resulting in macroscopic voids. The quartz sand used as a raw material may
be replaced by a siliceous fine aggregate other than sand, and usually is ground to a fine powder before use. Fly ash may be used
asasandreplacement.Thebatchedrawmaterialsaremixedthoroughlytogethertoformaslurry.Theslurryiscastintosteelmolds.
Due to the chemical reactions that take place within the slurry, the volume expands.After setting, and before hardening, the mass
is machine cut into units of various sizes. The units then are steam-cured under pressure in autoclaves where the material is
transformed into a hard calcium silicate.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
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. See Section 6, 7, and 8.
2. Referenced Documents
2
2.1 ASTM Standards:
C22/C22M Specification for Gypsum
C33 Specification for Concrete Aggregates
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C144 Specification for Aggregate for Masonry Mortar
C150 Specification for Portland Cement
C332 Specification for Lightweight Aggregates for Insulating Concrete
C595/C595M Specification for Blended Hydraulic Cements
C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C1692 Practice for Construction and Testing of Autoclaved Aerated Concrete (AAC) Masonry
E4 Practices for Force Verification of Testing Machines
E575 Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and Assemblies
3. Classification
3.1AAC3.1 AAC units manufactured in accordance with this specification are classified according to their strength class.
4. Materials and Manufacture
4.1 Raw Materials—Materials shall conform to the following applicable specifications:
4.1.1 Portland Cement, Specification C150.
1
This specification is under the jurisdiction of ASTM Committee C27 on Precast Concrete Products and is the direct responsibility of Subcommittee C27.60 on Precast
Autoclaved Aerated Concrete.
Current edition approved Oct. 1, 2009. Published November 2009. DOI: 10.1520/C1693-09E01.
´1
Current edition approved July 15, 2011. Published August 2011. Originally approved in 2009. Last previous edition approved in 2009 as C1693 – 09 . DOI:
10.1520/C1693-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1693 – 11
4.1.2 Blended Cements, Specification C595/C595M.
4.1.3 Pozzolan, Specification C618.
4.1.4 Gypsum, Specification C22/C22M.
4.1.5 Aggregates, Specifications C33, C144, or C332.
5. Physical Requirements
5.1 Compressive Strength—The compressive strength shall be determined according to Section 6 and shall conform to the
requirements of Table 1.
5.2 Dry Bulk Density—The dry bulk density shall be determined according to Section 7 and shall conform to the requirements
of T
...