ASTM C317/C317M-24
(Specification)Standard Specification for Gypsum Concrete
Standard Specification for Gypsum Concrete
ABSTRACT
This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered. Gypsum concrete shall consist of calcined gypsum to which are added aggregates, wood chips, or wood shavings in proportion to meet the applicable requirements of this specification. Test method in this specification shall be performed in order to determine the physical properties of the gypsum concrete. Setting time is determined by the Vicat method.
SCOPE
1.1 This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered.
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.3 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.
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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: C317/C317M − 24
Standard Specification for
1
Gypsum Concrete
This standard is issued under the fixed designation C317/C317M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 4. Materials and Manufacture
1.1 This specification covers mill-mixed gypsum concrete, 4.1 Gypsum concrete shall consist of calcined gypsum to
consisting essentially of calcined gypsum and suitable which is added aggregates, wood chips, or wood shavings in
aggregate, requiring the addition of water only at the job site. proportion to meet the applicable requirements of this specifi-
Gypsum concrete is intended for use in the construction of cation.
poured-in-place roof decks or slabs. Two classes, based on the
4.2 Calcined Gypsum—Specification C28/C28M.
compressive strength and density, are covered.
4.3 Aggregates—Specification C35.
1.2 The values stated in either inch-pound units or SI units
4.4 Wood Chips or Wood Shavings, shall be dry wood,
are to be regarded separately as standard. The values stated in
uniform and clean in appearance, passing a 1-in. [25 mm]
each system may not be exact equivalents; therefore, each
1
sieve, and not more than ⁄16 in. [1.5 mm] thick.
system shall be used independently of the other. Combining
values from the two systems may result in nonconformance
5. Physical Properties
with the standard.
5.1 Determine the physical properties of gypsum concrete in
1.3 This international standard was developed in accor-
accordance with Test Methods C472.
dance with internationally recognized principles on standard-
5.1.1 Setting Time—Gypsum concrete shall set in not less
ization established in the Decision on Principles for the
than 20 min and not more than 90 min determined by the Vicat
Development of International Standards, Guides and Recom-
method.
mendations issued by the World Trade Organization Technical
5.1.2 Compressive Strength—Gypsum concrete shall have
Barriers to Trade (TBT) Committee.
the following compressive strength for the respective classes:
2. Referenced Documents
2
2.1 ASTM Standards: Class Compressive Strength,
psi [MPa]
C11 Terminology Relating to Gypsum and Related Building
A 500 [3.5] – 1000 [7.0]
Materials and Systems
B >1000 [7.0]
C28/C28M Specification for Gypsum Plasters
C35 Specification for Inorganic Aggregates for Use in Gyp-
sum Plaster
5.1.3 Density—Gypsum concrete, Class A, shall have a
C472 Test Methods for Physical Testing of Gypsum, Gyp-
3 3
density of not more than 60 lb/ft [960 kg/m ].
sum Plasters, and Gypsum Concrete
6. Sampling
3. Terminology
6.1 Randomly select at least 1 % of the packages, but not
3.1 Definitions of terms shall be in accordance with Termi-
less than five packages. Take samples from both the outer
nology C11.
portion and the center of each package. Mix the samples so
1 obtained to provide a composite sample of not less than 15 lb
This specification is under the jurisdiction of ASTM Committee C11 on
Gypsum and Related Building Materials and Systems and is the direct responsibility [6.5 kg]. Immediately place the sample in a clean, dry, airtight
of Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.
container for delivery to the laboratory.
Current edition approved April 1, 2024. Published April 2024. Originally
approved in 1953. Last previous edition approved in 2019 as C317/
7. Inspection
C317M – 00 (2019). DOI: 10.1520/C0317_C0317M-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7.1 Inspection of the gypsum concrete shall be agreed upon
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
between the purchaser and the supplier as part of the purchase
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. agreement.
*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
1
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C317/C317M − 24
8. Rejection 10. Packaging and Marking
10.1 Gypsum concrete shall be shipped dry and free of
8.1 Rejection of gypsum concrete that fails to conform to
lumps.
the requirements of this specification shall be reported to the
producer or supplier promptly and in writing. The notice of 10.2 When shipped for resale, the follow
...
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.
Designation: C317/C317M − 00 (Reapproved 2019) C317/C317M − 24
Standard Specification for
1
Gypsum Concrete
This standard is issued under the fixed designation C317/C317M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Scope*
1.1 This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate,
requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof
decks or slabs. Two classes, based on the compressive strength and density, are covered.
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in nonconformance with the standard.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C28/C28M Specification for Gypsum Plasters
C35 Specification for Inorganic Aggregates for Use in Gypsum Plaster
C472 Test Methods for Physical Testing of Gypsum, Gypsum Plasters, and Gypsum Concrete
3. Terminology
3.1 Definitions of terms shall be in accordance with Terminology C11.
4. Materials and Manufacture
4.1 Gypsum concrete shall consist of calcined gypsum to which is added aggregates, wood chips, or wood shavings in proportion
to meet the applicable requirements of this specification.
4.2 Calcined Gypsum—Specification C28/C28M.
1
This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of
Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.
Current edition approved Oct. 1, 2019April 1, 2024. Published October 2019April 2024. Originally approved in 1953. Last previous edition approved in 20152019 as
C317C317/C317M – 00 (2015). DOI: 10.1520/C0317_C0317M-00R19. – 00 (2019). DOI: 10.1520/C0317_C0317M-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
1
---------------------- Page: 1 ----------------------
C317/C317M − 24
4.3 Aggregates—Specification C35.
4.4 Wood Chips or Wood Shavings, shall be dry wood, uniform and clean in appearance, passing a 1-in. [25-mm][25 mm] sieve,
1
and not more than ⁄16 in. [1.5 mm] thick.
5. Physical Properties
5.1 Setting Time—Gypsum concrete shall set in not less than 20 min and not more than 90 min.
5.1 Compressive Strength—Gypsum concrete shall have the following compressive strength for the respective classes:Determine
the physical properties of gypsum concrete in accordance
with
Class Compressive Strength, min,
psi [MPa]
A 500 [3.5]
B 1000 [7.0]
Test Methods C472.
5.1.1 Setting Time—Gypsum concrete shall set in not less than 20 min and not more than 90 min determined by the Vicat method.
5.1.2 Compressive Strength—Gypsum concrete shall have the following compressive strength for the respective classes:
Class Compressive Strength,
psi [MPa]
A 500 [3.5] – 1000 [7.0]
B >1000 [7.0]
3 3
5.1.3 Density—Gypsum concrete, Class A, shall have a density of not more than 60 lb/ft [960 kg/m ].
3 3
5.3 Density—Gypsum concrete, Class A, shall have a density of not more than 60 lb/ft [960 kg/m ].
6. Sampling
6.1 Randomly select at least 1 % of the packages, but not less than five packages. Take samples from both the outer portion and
the center of each package. Mix the samples so obtained to provide a composite
...
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