ASTM C471M-20

Standard Test Methods for Chemical Analysis of Gypsum and Gypsum Products (Metric)

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 These test methods appear in the following order:    
Section(s)  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in Gypsum
Using a Moisture Balance  
17  
Alternative Procedure for Analysis of Combined Water in Gypsum
Using a Moisture Balance  
18  
Alternative Procedure for Analysis for Calcium Sulfate by
Ammonium Acetate Method  
19  
Alternative Procedure for Analysis for Sodium Chloride by the
Coulometric Method  
20  
Determination of Sand in Set Plaster  
21  
Wood-fiber Content in Wood-fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic
Absorption Method  
23  
Optional Procedure for Analysis for Sodium by Flame Photometry  
24  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products—General Provisions  
25  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products by Gas Chromatograph Equipped with a Mass Spectrometer (GS/MS)  
26  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products by Gas Chromatograph
Equipped with an Electron Capture Detector (GC/ECD)  
27  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products by High-performance Liquid Chromatograph
Equipped with and Ultraviolet Detector (HPLC/UV)  
28  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 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: Historical
• Publication Date: 30-Sep-2020
• 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

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: C471M − 20
Standard Test Methods for
Chemical Analysis of Gypsum and Gypsum Products
1
(Metric)
This standard is issued under the fixed designation C471M; 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 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 These test methods cover the chemical analysis of
responsibility of the user of this standard to establish appro-
gypsum and gypsum panel products, including gypsum ready-
priate safety, health, and environmental practices and deter-
mixed plaster, gypsum wood-fibered plaster, and gypsum
mine the applicability of regulatory limitations prior to use.
concrete.
1.6 This international standard was developed in accor-
1.2 These test methods appear in the following order:
dance with internationally recognized principles on standard-
Section(s)
ization established in the Decision on Principles for the
Preparation of Sample 4
Development of International Standards, Guides and Recom-
Complete Procedure 5–16
mendations issued by the World Trade Organization Technical
Alternative Procedure for Analysis of Free Water in Gypsum 17
Using a Moisture Balance
Barriers to Trade (TBT) Committee.
Alternative Procedure for Analysis of Combined Water in Gypsum 18
Using a Moisture Balance
2. Referenced Documents
Alternative Procedure for Analysis for Calcium Sulfate by 19
Ammonium Acetate Method 2
2.1 ASTM Standards:
Alternative Procedure for Analysis for Sodium Chloride by the 20
C11 Terminology Relating to Gypsum and Related Building
Coulometric Method
Determination of Sand in Set Plaster 21
Materials and Systems
Wood-fiber Content in Wood-fiber Gypsum Plaster 22
C22/C22M Specification for Gypsum
Optional Procedure for Analysis for Sodium by the Atomic 23
C28/C28M Specification for Gypsum Plasters
Absorption Method
Optional Procedure for Analysis for Sodium by Flame Photometry 24
C59/C59M Specification for Gypsum Casting Plaster and
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 25
8
Gypsum Molding Plaster
Panel Products—General Provisions
C61/C61M Specification for Gypsum Keene’s Cement
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 26
8
Panel Products by Gas Chromatograph Equipped with a Mass
C317/C317M Specification for Gypsum Concrete
Spectrometer (GS/MS)
C778 Specification for Standard Sand
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 27
8
C842 Specification forApplication of Interior Gypsum Plas-
Panel Products by Gas Chromatograph
Equipped with an Electron Capture Detector (GC/ECD)
ter
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 28
8
D1193 Specification for Reagent Water
Panel Products by High-performance Liquid Chromatograph
Equipped with and Ultraviolet Detector (HPLC/UV) D1428 Test Method for Test for Sodium and Potassium In
Water and Water-Formed Deposits by Flame Photometry
1.3 The values stated in SI units are to be regarded as
3
(Withdrawn 1989)
standard. No other units of measurement are included in this
D2013/D2013M Practice for Preparing Coal Samples for
standard.
Analysis
1.4 The text of this standard references notes and footnotes
E11 Specification for Woven Wire Test Sieve Cloth and Test
that provide explanatory material. These notes and footnotes
Sieves
(excluding those in tables and figures) shall not be considered
E177 Practice for Use of the Terms Precision and Bias in
as requirements of the standard.
ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to
1
These test methods are under the jurisdiction of ASTM Committee C11 on
2
Gypsum and Related Building Materials and Systems and are the direct responsi- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bility of Subcommittee C11.01 on Specifications and Test Methods for Gypsum contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Products. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2020. Published October 2020. Originally the ASTM website.
ε1 3
approved in 1961. Last previous edition approved in 2017 as C471M – 17 . DOI: The last approved version of this historical standard is referenced on
10.1520/C0471M-20. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C471M − 20
4
Determine the Precision of a Test Method (No. 100) sieve and discard the residue retained on the sieve.
Reweigh the rema
...

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: C471M − 17a C471M − 20
Standard Test Methods for
Chemical Analysis of Gypsum and Gypsum Products
1
(Metric)
This standard is issued under the fixed designation C471M; 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
ε NOTE—Corrected Research Report number in December 2017.
1. Scope*Scope
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster,
gypsum wood-fibered plaster, and gypsum concrete.
1.2 TheThese test methods appear in the following order:
Section(s)
Preparation of Sample 4
Complete Procedure 5 – 16
Alternative Procedure for Analysis of Free Water in Gypsum 17
Using a Moisture Balance
Alternative Procedure for Analysis of Combined Water in Gypsum 18
Using a Moisture Balance
Alternative Procedure for Analysis for Calcium Sulfate by 19
Ammonium Acetate Method
Alternative Procedure for Analysis for Sodium Chloride by the 20
Coulometric Method
Determination of Sand in Set Plaster 21
Wood-fiber Content in Wood-fiber Gypsum Plaster 22
Optional Procedure for Analysis for Sodium by the Atomic 23
Absorption Method
Optional Procedure for Analysis for Sodium by Flame Photometry 24
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 25
8
Panel Products—General Provisions
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 26
8
Panel Products by Gas Chromatograph Equipped with a Mass Spectrometer (GS/MS)
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 27
8
Panel Products by Gas Chromatograph
Equipped with an Electron Capture Detector (GC/ECD)
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 28
8
Panel Products by High-performance Liquid Chromatograph
Equipped with and Ultraviolet Detector (HPLC/UV)
Sections
Preparation of Sample 4
Complete Procedure 5 – 16
Alternative Procedure for Analysis of Free Water in 17
Gypsum Using a Moisture Balance
Alternative Procedure for Analysis of Combined Water in 18
Gypsum Using a Moisture Balance
Alternative Procedure for Analysis for Calcium Sulfate by 19
1
These test methods are under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and are the direct responsibility of
Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.
Current edition approved Oct. 1, 2017Oct. 1, 2020. Published November 2017October 2020. Originally approved in 1961. Last previous edition approved in 2017 as
ε1
C471M – 17.C471M – 17 . DOI: 10.1520/C0471M-17AE01.10.1520/C0471M-20.
*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 ----------------------
C471M − 20
Ammonium Acetate Method
Alternative Procedure for Analysis for Sodium Chloride by 20
the Coulometric Method
Determination of Sand in Set Plaster 21
Wood-Fiber Content in Wood-Fiber Gypsum Plaster 22
Optional Procedure for Analysis for Sodium by the Atomic 23
Absorption Method
Optional Procedure for Analysis for Sodium by Flame 24
Photometry
Determination of Orthorhombic Cyclooctasulfur (S ) in 25
8
Ggypsum Panel Products—General Provisions
Determination of Orthorhombic Cyclooctasulfur (S ) in 26
8
Gypsum Panel Products by Gas Chromatograph
Equipped with a Mass Spectrometer (GS/MS)
Determination of Orthorhombic Cyclooctasulfur (S ) in 27
8
Gypsum Panel Products by Gas Chromatograph
Equipped with an Electron Capture Detector (GC/ECD)
Determination of Orthorhombic Cyclooctasulfur (S ) in 28
8
Gypsum Panel Products by High-performance Liquid
Chromatograph Equipped with and Ultraviolet Detector
(HPLC ⁄UV)
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
1.4 The values stated in SI units are to be regarded as 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, health, and env
...