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Description of ASTM-C90 2013ASTM C90 - 13Standard Specification for Loadbearing Concrete Masonry UnitsActive Standard ASTM C90 | Developed by Subcommittee: C15.03 Book of Standards Volume: 04.05 ASTM C90Abstract 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. This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 1. 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.
Note 1 The requirements of this specification have been researched, evaluated, and established for over a century,
resulting in the physical properties and attributes defined here. These requirements are uniquely and solely applicable to concrete masonry units manufactured on equipment using low or zero
slump concrete and the constituent materials defined herein. Many performance attributes of concrete masonry units are indirectly accounted for, or inherently reflected within, the
requirements of this specification without direct measurement, assessment, or evaluation. Applying the requirements of this specification to products that may be similar in appearance, use,
or nature to those covered by this specification may not address all pertinent physical properties necessary to ensure performance or serviceability of the resulting construction in
real-world applications under typical exposure environments. Products manufactured using alternative materials, manufacturing methods, or curing processes not covered by this specification
should not be evaluated solely using the requirements in this specification; however, developers of new products can consider the property requirements of this specification as a beginning
benchmark for unit performance. It is reasonable to test new products for system performance as well as unit performance.
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 2 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.
ASTM Standards C33 Specification for Concrete Aggregates C140 Test Methods for Sampling and Testing Concrete Masonry Units and Related Units C150 Specification for Portland Cement C331 Specification for Lightweight Aggregates for Concrete Masonry Units C426 Test Method for Linear Drying Shrinkage of Concrete Masonry Units C595 Specification for Blended Hydraulic Cements C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete C979 Specification for Pigments for Integrally Colored Concrete C989 Specification for Slag Cement for Use in Concrete and Mortars C1157 Performance Specification for Hydraulic Cement C1232 Terminology of Masonry C1240 Specification for Silica Fume Used in Cementitious Mixtures C1314 Test Method for Compressive Strength of Masonry Prisms E72 Test Methods of Conducting Strength Tests of Panels for Building Construction E519 Test Method for Diagonal Tension (Shear) in Masonry Assemblages Keywords absorption; compressive strength; concrete masonry units; equivalent web thickness; face shell; flange; lightweight; linear drying shrinkage; loadbearing; medium weight; normal weight; webs; ICS Code ICS Number Code 91.100.30 (Concrete and concrete products) DOI: 10.1520/C0090 ASTM International is a member of CrossRef. ASTM C90The following editions for this book are also available...
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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