ASTM C 471M : 2020
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Standard Test Methods for Chemical Analysis of Gypsum and Gypsum Products (Metric)
Hardcopy , PDF
01-14-2021
English
10-23-2020
1.1These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.
1.2These 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 |
| Alternative Procedure for Analysis of Combined Water in Gypsum | 18 |
| Alternative Procedure for Analysis for Calcium Sulfate by | 19 |
| Alternative Procedure for Analysis for Sodium Chloride by the | 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 | 23 |
| Optional Procedure for Analysis for Sodium by Flame Photometry | 24 |
| Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum | 25 |
| Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum | 26 |
| Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum | 27 |
| Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum | 28 |
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4The 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.
1.5This 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.
1.6This 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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