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ASTM C1693-11(2017)

(Specification)

Standard Specification for Autoclaved Aerated Concrete (AAC)

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.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
31-May-2017
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

Relations

Refers
ASTM C39/C39M-17b - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
Effective Date
01-Aug-2017
Refers
ASTM C144-17 - Standard Specification for Aggregate for Masonry Mortar
Effective Date
15-Dec-2017
Refers
ASTM E4-14 - Standard Practices for Force Verification of Testing Machines
Effective Date
01-Jun-2014
Refers
ASTM C39/C39M-16b - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
Effective Date
01-Aug-2016
Refers
ASTM C618-17 - Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
Effective Date
01-Oct-2017
Refers
ASTM C39/C39M-16a - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
Effective Date
01-Jul-2016
Refers
ASTM C595/C595M-15 - Standard Specification for Blended Hydraulic Cements
Effective Date
01-Jul-2015
Refers
ASTM C595/C595M-17 - Standard Specification for Blended Hydraulic Cements
Effective Date
01-Apr-2017
Refers
ASTM E575-05(2018) - Standard Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and Assemblies
Effective Date
01-Jul-2018
Referred By
ASTM C1692-18 - Standard Practice for Construction and Testing of Autoclaved Aerated Concrete (AAC) Masonry
Effective Date
01-Jun-2017
Referred By
ASTM C1691-21 - Standard Specification for Unreinforced Autoclaved Aerated Concrete (AAC) Masonry Units
Effective Date
01-Jun-2017
Referred By
ASTM C1694-09(2017) - Standard Specification for Reinforced Autoclaved Aerated Concrete (AAC) Elements
Effective Date
01-Jun-2017
Referred By
ASTM C1232-21a - Standard Terminology for Masonry
Effective Date
01-Jun-2017
Referred By
ASTM C1686-09(2017) - Standard Practice for Installation and Testing of Reinforced Autoclaved Aerated Concrete (AAC) Units
Effective Date
01-Jun-2017

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ASTM C1693-11(2017) - Standard Specification for Autoclaved Aerated Concrete (AAC)ASTM C1693-11(2017) - Standard Specification for Autoclaved Aerated Concrete (AAC)
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ASTM C1693-11(2017) - Standard Specification for Autoclaved Aerated Concrete (AAC)
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C1693 −11 (Reapproved 2017)
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 2. Referenced Documents
2
1.1 This specification covers autoclaved aerated concrete 2.1 ASTM Standards:
(AAC), a cementitious product based on calcium silicate C22/C22M Specification for Gypsum
hydrates in which low density is attained by the inclusion of an C33 Specification for Concrete Aggregates
agent resulting in macroscopic voids, and in which curing is C39/C39M Test Method for Compressive Strength of Cylin-
carried out using high-pressure steam. drical Concrete Specimens
C144 Specification for Aggregate for Masonry Mortar
1.2 The raw materials used in the production of autoclaved
C150 Specification for Portland Cement
aerated concrete are portland cement or blended cements,
C332 Specification for Lightweight Aggregates for Insulat-
quartz sand, water, lime, gypsum or anhydrite, and an agent
ing Concrete
resulting in macroscopic voids. The quartz sand used as a raw
C595/C595M Specification for Blended Hydraulic Cements
material may be replaced by a siliceous fine aggregate other
C618 Specification for Coal Fly Ash and Raw or Calcined
than sand, and usually is ground to a fine powder before use.
Natural Pozzolan for Use in Concrete
Fly ash may be used as a sand replacement. The batched raw
C1692 Practice for Construction and Testing of Autoclaved
materials are mixed thoroughly together to form a slurry. The
Aerated Concrete (AAC) Masonry
slurry is cast into steel molds. Due to the chemical reactions
E4 Practices for Force Verification of Testing Machines
that take place within the slurry, the volume expands. After
E575 Practice for Reporting Data from Structural Tests of
setting, and before hardening, the mass is machine cut into
Building Constructions, Elements, Connections, and As-
units of various sizes. The units then are steam-cured under
semblies
pressure in autoclaves where the material is transformed into a
hard calcium silicate.
3. Classification
1.3 The values stated in inch-pound units are to be regarded
3.1 AAC units manufactured in accordance with this speci-
as standard. The values given in parentheses are mathematical
fication are classified according to their strength class.
conversions to SI units that are provided for information only
and are not considered standard.
4. Materials and Manufacture
1.4 This standard does not purport to address all of the
4.1 Raw Materials—Materials shall conform to the follow-
safety concerns, if any, associated with its use. It is the
ing applicable specifications:
responsibility of the user of this standard to establish appro-
4.1.1 Portland Cement, Specification C150.
priate safety and health practices and determine the applica-
4.1.2 Blended Cements, Specification C595/C595M.
bility of regulatory limitations prior to use. See Section 6, 7,
4.1.3 Pozzolan, Specification C618.
and 8.
4.1.4 Gypsum, Specification C22/C22M.
1.5 This international standard was developed in accor-
4.1.5 Aggregates, Specifications C33, C144,or C332.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5. Physical Requirements
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5.1 Compressive Strength—The compressive strength shall
Barriers to Trade (TBT) Committee.
be determined according to Section 6 and shall conform to the
requirements of Table 1.
1
This specification is under the jurisdiction ofASTM Committee C27 on Precast
Concrete Products and is the direct responsibility of Subcommittee C27.60 on
2
Precast Autoclaved Aerated Concrete. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
CurrenteditionapprovedJune1,2017.PublishedJuly2017.Originallyapproved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 2009. Last previous edition approved in 2011 as C1693 – 11. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
C1693-11R17. 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 (2017)
A
TABLE 1 Physical Requirements
Strength Class Compressive
...

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