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ASTM C638-92(1997)

Historical Reaffirmation

Standard Descriptive Nonmenclature of Constituents of Aggregates for Radiation-Shielding Concrete

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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.


SDO ASTM: ASTM International
Document Number C638
Publication Date Jan. 1, 1997
Language en - English
Page Count 3
Revision Level 92(1997)
Supercedes
Committee C09.41
Publish Date Document Id Type View
Jan. 1, 2020 C0638-20 Revision
June 1, 2014 C0638-14 Revision
Dec. 1, 2009 C0638-09 Revision
Dec. 10, 2002 C0638-92R02 Reaffirmation
Jan. 1, 1997 C0638-92R97 Reaffirmation