ASTM C90 — CMU Specification

Updated Mar 26, 2026

Standard specification for loadbearing concrete masonry units. Covers compressive strength (net area: 1900 psi min for normal weight), absorption limits, dimensions, and physical requirements for hollow and solid CMU blocks.

category

Masonry

current year

2023

standard body

ASTM

SOURCES

🔗https://www.astm.org/

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