ASTM C 638 : 1992 : R1997
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Descriptive Nonmenclature of Constituents of Aggregates for Radiation-Shielding Concrete
Hardcopy , PDF
11-11-2014
English
01-01-1997
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
C 09
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| DocumentType |
Reference Material
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| Pages |
4
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| ProductNote |
Reconfirmed 1997
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy |
1.1 This nomenclature is intended to give accurate descriptions of some common or important naturally occurring and synthetic constituents of aggregates for radiation-shielding concrete, that, at the same time, are not common or important constituents of concrete aggregates in general use. While most of the minerals and rocks discussed below may occur in small quantities in aggregates in general use, they are not major constituents of such aggregates. Common constituents of aggregates in general use are described in Descriptive Nomenclature C294. Radiation-shielding concrete often contains such aggregates, but other special aggregates are used in some circumstances.
1.2 The synthetic aggregates included are ferrophosphorus and boron frit.
1.3 The descriptions are not adequate to permit the identification of materials, since accurate identification of natural and synthetic aggregate constituents in many cases can only be made by a qualified geologist, mineralogist, or petrographer, using the apparatus and procedures of those sciences.
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