ASTM C472-99(2014)

Standard Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete

ABSTRACT
These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete. Test methods are detailed for the following: precautions for physical tests, reagents and materials, free water, fineness, normal consistency of gypsum plaster and gypsum concrete, setting time, setting time (temperature rise method), compressive strength, and density. Materials include distilled or deionized water and standard sand. For each test method, the following are specified: significance and use, apparatus, and procedure.
SCOPE
1.1 These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete.  
1.2 The test methods appear in the following sections:    
Sections  
Precautions for Physical Tests  
4  
Reagents and Materials  
5  
Free Water  
6  
Fineness  
7  
Normal Consistency of Gypsum Plaster  
8  
Normal Consistency of Gypsum Concrete  
9  
Setting Time  
10  
Setting Time (Temperature Rise Method)  
11  
Compressive Strength  
12  
Density  
13
1.3 The values regarded as the standard are either in inch-pound units or SI (metric). The values stated first shall be regarded as the standard. Values following in parentheses are approximate and are provided for information purposes only.  
1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) are not requirements of the standard.  
1.5 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.For a specific precautionary statement, see X1.2.1.

General Information

• Status: Historical
• Publication Date: 31-Mar-2014
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.01 - Specifications and Test Methods for Gypsum Products

Relations

• Replaces: ASTM C472-99(2009) - Standard Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete
• Effective Date: 01-Apr-2014
• Replaced By: ASTM C472-20 - Standard Test Methods for Physical Testing of Gypsum, Gypsum Plasters, and Gypsum Concrete
• Effective Date: 01-Apr-2020
• Referred By: ASTM E3355-23 - Standard Guide for Characterization of Coal Combustion Products (CCPs) in Storage Area(s) for Beneficial Use
• Effective Date: 01-Apr-2014
• Referred By: ASTM C59/C59M-00(2020) - Standard Specification for Gypsum Casting Plaster and Gypsum Molding Plaster
• Effective Date: 01-Apr-2014
• Referred By: ASTM C22/C22M-00(2021) - Standard Specification for Gypsum
• Effective Date: 01-Apr-2014
• Referred By: ASTM F2678-16(2021) - Standard Practice for Preparing Panel Underlayments, Thick Poured Gypsum Concrete Underlayments, Thick Poured Lightweight Cellular Concrete Underlayments, and Concrete Subfloors with Underlayment Patching Compounds to Receive Resilient Flooring
• Effective Date: 01-Apr-2014
• Referred By: ASTM C631-09(2020) - Standard Specification for Bonding Compounds for Interior Gypsum Plastering
• Effective Date: 01-Apr-2014
• Referred By: ASTM F710-22 - Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring
• Effective Date: 01-Apr-2014
• Referred By: ASTM C11-23 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 01-Apr-2014
• Referred By: ASTM C474-15(2020) - Standard Test Methods for Joint Treatment Materials for Gypsum Board Construction
• Effective Date: 01-Apr-2014
• Referred By: ASTM C110-20 - Standard Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• Effective Date: 01-Apr-2014
• Referred By: ASTM C617/C617M-15 - Standard Practice for Capping Cylindrical Concrete Specimens
• Effective Date: 01-Apr-2014
• Referred By: ASTM F2224-09(2020) - Standard Specification for High Purity Calcium Sulfate Hemihydrate or Dihydrate for Surgical Implants
• Effective Date: 01-Apr-2014
• Referred By: ASTM F2419-11(2021) - Standard Practice for Installation of Thick Poured Gypsum Concrete Underlayments and Preparation of the Surface to Receive Resilient Flooring
• Effective Date: 01-Apr-2014
• Referred By: ASTM C28/C28M-10(2020) - Standard Specification for Gypsum Plasters
• Effective Date: 01-Apr-2014

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:C472 −99 (Reapproved 2014)
Standard Test Methods for
Physical Testing of Gypsum, Gypsum Plasters and Gypsum
1
Concrete
This standard is issued under the fixed designation C472; 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 2. Referenced Documents
2
1.1 These test methods cover the physical testing of 2.1 ASTM Standards:
gypsum, gypsum plasters, and gypsum concrete. C11 Terminology Relating to Gypsum and Related Building
Materials and Systems
1.2 The test methods appear in the following sections:
C778 Specification for Standard Sand
Sections
E11 Specification for Woven Wire Test Sieve Cloth and Test
Precautions for Physical Tests 4 Sieves
Reagents and Materials 5
Free Water 6
3. Terminology
Fineness 7
Normal Consistency of Gypsum Plaster 8
3.1 Definitions:
Normal Consistency of Gypsum Concrete 9
3.1.1 For useful definitions refer to Terminology C11.
Setting Time 10
Setting Time (Temperature Rise Method) 11
4. Precautions for Physical Tests
Compressive Strength 12
Density 13
4.1 Gypsum products are greatly affected by small amounts
1.3 The values regarded as the standard are either in
of impurities introduced by careless laboratory manipulation.
inch-pound units or SI (metric). The values stated first shall be
In order to obtain accurate results, it is absolutely essential to
regarded as the standard. Values following in parentheses are
observe the following precautions:
approximate and are provided for information purposes only.
4.1.1 Keep all apparatus thoroughly clean. Remove all
traces of set plaster.
1.4 The text of this standard references notes and footnotes
which provide explanatory material. These notes and footnotes
NOTE 1—For mixing pastes and mortars, a 500-ml rubber dental bowl
(excluding those in tables and figures) are not requirements of
is a convenience.
NOTE 2—Use care when drying gypsum, gypsum plasters, or gypsum
the standard.
concrete. Exceeding the specified drying temperatures may calcine the
1.5 This standard does not purport to address all of the
specimens, which will cause inaccurate test results.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 5. Reagents and Materials
priate safety and health practices and determine the applica-
5.1 Distilled or Deionized Water—free of chlorides and
bility of regulatory limitations prior to use. For a specific
sulfates at a temperature of 21 6 1°C (70 6 2°F).
precautionary statement, see X1.2.1.
5.2 Standard Sand— Specification C778, 20–30 sand.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
6. Free Water
ization established in the Decision on Principles for the
6.1 Significance and Use—This test method determines the
Development of International Standards, Guides and Recom-
free water contained in gypsum, gypsum plasters, and gypsum
mendations issued by the World Trade Organization Technical
concrete samples, and prepares the sample for subsequent
Barriers to Trade (TBT) Committee.
testing.
1
These test methods are under the jurisdiction of ASTM Committee C11 on 6.2 Apparatus:
Gypsum and Related Building Materials and Systems and are the direct responsi-
bility of Subcommittee C11.01 on Specifications and Test Methods for Gypsum
2
Products. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2014. Published April 2014. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1961. Last previous edition approved in 2009 as C472 – 99 (2009). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/C0472-99R14. the ASTM website.
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C472−99 (2014)
sheet of paper on the table and tap it sharply against the table. Then
6.2.1 Balance, capable of weighing not less than 500 g at
transfer all the retained material back into the sieve and continue sieving.
a precision of 0.1 g.
6.2.2 Drying Oven, set at 45 6 3°C. 7.4 Report—Report the percent by weight retained on each
6.2.3 Desiccator, containing calcium chloride or equiva- sieve or passing particular sieves in accordance with the
lent desiccant. material specification to the nearest full percentage point.
6.3 Procedure: 7.5 Precision and Bias—The precision and
...