ASTM C637-20
(Specification)Standard Specification for Aggregates for Radiation-Shielding Concrete
Standard Specification for Aggregates for Radiation-Shielding Concrete
ABSTRACT
This specification covers special aggregates for use in radiation-shielding concretes in which composition or high specific gravity, or both, are of prime consideration. Aggregates covered by specification include the natural mineral aggregates of either high density or high fixed water content, or both. These include aggregates that contain or consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine. Also included are synthetic aggregates such as iron, steel, ferrophosphorus and boron frit or other boron compounds. Fine aggregate consisting of natural or manufactured sand including high-density minerals. Coarse aggregate may consist of crushed ore, crushed stone, or synthetic products, or combinations or mixture thereof. Aggregates shall meet the required uniformity of specific gravity and fixed water content. The materials shall also meet the required chemical composition for serpentine, limonite, goethite, barite, ilmenite, hematite, magnetite, iron, ferrophosphorus, boron frit, boron carbide, calcium carbide.
SCOPE
1.1 This specification covers special aggregates and/or high-density aggregates for use in radiation-shielding concretes in which composition or high specific gravity, or both, are of prime consideration.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard.
1.4 The following precautionary caveat pertains only to the test method portion, Section 9, of this specification: 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.
1.5 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.
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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.
Designation:C637 −20
Standard Specification for
1
Aggregates for Radiation-Shielding Concrete
This standard is issued under the fixed designation C637; 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* C128 Test Method for Relative Density (Specific Gravity)
and Absorption of Fine Aggregate
1.1 Thisspecificationcoversspecialaggregatesand/orhigh-
C131 Test Method for Resistance to Degradation of Small-
density aggregates for use in radiation-shielding concretes in
Size CoarseAggregate byAbrasion and Impact in the Los
which composition or high specific gravity, or both, are of
Angeles Machine
prime consideration.
C136 Test Method for Sieve Analysis of Fine and Coarse
1.2 The values stated in SI units are to be regarded as
Aggregates
standard. No other units of measurement are included in this
C219 Terminology Relating to Hydraulic and Other Inor-
standard.
ganic Cements
C535 Test Method for Resistance to Degradation of Large-
1.3 The text of this standard refers to notes and footnotes
that provide explanatory material. These notes and footnotes Size CoarseAggregate byAbrasion and Impact in the Los
Angeles Machine
(excluding those in tables and figures) shall not be considered
as requirements of this standard. C638 Descriptive Nomenclature of Constituents of Aggre-
gates for Radiation-Shielding Concrete
1.4 The following precautionary caveat pertains only to the
test method portion, Section 9, of this specification: This
3. Terminology
standard does not purport to address all of the safety concerns,
if any, associated with its use. It is the responsibility of the user 3.1 Definitions:
of this standard to establish appropriate safety, health, and 3.1.1 For definitions of terms used in this standard, refer to
environmental practices and determine the applicability of Terminologies C125 and C219.
regulatory limitations prior to use.
1.5 This international standard was developed in accor- 4. Classification
dance with internationally recognized principles on standard-
4.1 Aggregates covered by this specification include:
ization established in the Decision on Principles for the
4.1.1 Natural mineral aggregates of either high density or
Development of International Standards, Guides and Recom-
highfixedwatercontent,orboth.Theseincludeaggregatesthat
mendations issued by the World Trade Organization Technical
contain or consist predominately of materials such as barite,
Barriers to Trade (TBT) Committee.
magnetite, hematite, ilmenite, and serpentine.
4.1.2 Synthetic aggregates such as iron, steel, ferrophospho-
2. Referenced Documents
rus and boron frit or other boron compounds (see Descriptive
2
2.1 ASTM Standards:
Nomenclature C638).
C33 Specification for Concrete Aggregates
4.1.3 Fine aggregate consisting of natural or manufactured
C125 Terminology Relating to Concrete and Concrete Ag-
sand including high-density minerals. Coarse aggregate may
gregates
consist of crushed ore, crushed stone, or synthetic products, or
C127 Test Method for Relative Density (Specific Gravity)
combinations or mixtures thereof.
and Absorption of Coarse Aggregate
5. Composition and Relative Density (Specific Gravity)
5.1 Table 1 gives data on chemical composition and relative
1
This specification is under the jurisdiction of ASTM Committee C09 on
density(specificgravity)ofaggregatematerialscoveredbythis
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.20 on Aggregates.
specification.
Current edition approved Jan. 1, 2020. Published February 2020. Originally
5.2 The purchaser shall specify the minimum specific grav-
approved in 1969. Last previous edition approved in 2014 as C637 – 14. DOI:
10.1520/C0637-20.
ity for each size and type of aggregate.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.2.1 Uniformity of Specific Gravity—The relative density
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
(specific gravity) SSD (saturated surface-dry) of successive
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. shipments of aggregate shall not differ by more than 3 % from
*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 ----------------------
C637−20
TABLE 1 Composition and Relative Density
...
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.
Designation: C637 − 14 C637 − 20
Standard Specification for
1
Aggregates for Radiation-Shielding Concrete
This standard is issued under the fixed designation C637; 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*
1.1 This specification covers special aggregates and/or high-density aggregates for use in radiation-shielding concretes in which
composition or high specific gravity, or both, are of prime consideration.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of this standard.
1.4 The following precautionary caveat pertains only to the test method portion, Section 9, of this specification: 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 safety, health, and healthenvironmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C33 Specification for Concrete Aggregates
C125 Terminology Relating to Concrete and Concrete Aggregates
C127 Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate
C128 Test Method for Relative Density (Specific Gravity) and Absorption of Fine Aggregate
C131 Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles
Machine
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
C219 Terminology Relating to Hydraulic and Other Inorganic Cements
C535 Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles
Machine
C638 Descriptive Nomenclature of Constituents of Aggregates for Radiation-Shielding Concrete
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this standard, refer to Terminologies C125 and C219.
4. Classification
4.1 Aggregates covered by this specification include:
4.1.1 Natural mineral aggregates of either high density or high fixed water content, or both. These include aggregates that
contain or consist predominately of materials such as barite, magnetite, hematite, ilmenite, and serpentine.
1
This specification is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.20 on
Aggregates.
Current edition approved June 1, 2014Jan. 1, 2020. Published June 2014February 2020. Originally approved in 1969. Last previous edition approved in 20092014 as
C637 – 09.C637 – 14. DOI: 10.1520/C0637-14.10.1520/C0637-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
C637 − 20
4.1.2 Synthetic aggregates such as iron, steel, ferrophosphorus and boron frit or other boron compounds (see Descriptive
Nomenclature C638).
4.1.3 Fine aggregate consisting of natural or manufactured sand including high-density minerals. Coarse aggregate may consist
of crushed ore, crushed stone, or synthetic products, or combinations or mixtures thereof.
5. Composition and Relative Density (Specific Gravity)
5.1 Table 1 gives data on chemical composition and relative density (specific gravity) of aggregate materials covered by this
specification.
5.2 The purchaser shall specify the minimum specific gravity for each size and type of aggregate.
5.2.1 Unif
...
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