ASTM C90-22 PDF Download

The ASTM C90-22 standard covers the specifications for hollow and solid concrete masonry units. These units are made from hydraulic cement, water, and mineral aggregates, with or without the inclusion of other materials. The standard defines three classes of concrete masonry units: normal weight, medium weight, and lightweight. These units are suitable for both loadbearing and nonloadbearing applications.

This specification applies to concrete masonry units made from lightweight or normal weight aggregates, or both. The requirements outlined in this standard have been researched, evaluated, and established for over a century, ensuring the physical properties and attributes of the units. It's important to note that the application of this specification to similar products may not cover all the necessary physical properties that ensure performance and serviceability in real-world applications.

The standard includes explanatory notes and footnotes that provide additional information but should not be considered as requirements of the standard. If specific features such as surface textures, finishes, colors, or certain properties like higher compressive strength or fire resistance are desired, they should be specified separately by the purchaser. Suppliers can be consulted to determine the availability of units with these desired features.