ASTM-C90 › Historical Revision Information
Standard Specification for Loadbearing Concrete Masonry Units
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This specification covers hollow and solid concrete masonry units made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials. There are three classes of concrete masonry units: normal weight, medium weight, and lightweight. These units are suitable for both loadbearing and nonloadbearing applications. Concrete masonry units shall be made from lightweight or normal weight aggregates, or both.
Scope
1.1 This specification covers hollow and solid (see 5.3 and 5.4) concrete masonry units made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials. There are three classes of concrete masonry units: (1) normal weight, (2) medium weight, and (3) lightweight. These units are suitable for both loadbearing and nonloadbearing applications.
1.2 Concrete masonry units covered by this specification are made from lightweight or normal weight aggregates, or both.
1.3 The text of this specification references notes and footnotes which 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 inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Note 1—When particular features are desired such as surface textures for appearance or bond, finish, color, or particular properties such as density classification, higher compressive strength, fire resistance, thermal performance or acoustical performance, these features should be specified separately by the purchaser. Suppliers should be consulted as to the availability of units having the desired features.
Keywords
absorption; compressive strength; concrete masonry units; equivalent web thickness; face shell; flange; lightweight; linear drying shrinkage; loadbearing; medium weight; normal weight; webs; Concrete construction materials/applications--specifications; Concrete masonry units--specifications; Loadbearing masonry units--specifications; Masonry units--specifications; ICS Number Code 91.100.30 (Concrete and concrete products)
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91.100.30 (Concrete and concrete products Including admixtures)
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Document Number
ASTM-C90-11a
Revision Level
2011A EDITION
Status
Superseded
Modification Type
Revision
Publication Date
June 15, 2011
Document Type
Specification
Page Count
4 pages
Committee Number
C15.03