ASTM C90-16a
- Standard Specification for Loadbearing Concrete Masonry Units
- standard by ASTM International, 12/15/2016
- Category: ASTM
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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: Normal Weight, Medium Weight, and Lightweight. These units are suitable for both loadbearing and nonloadbearing applications.
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