Concrete Block (CMU) - Durable Construction Material for Walls & Foundations #1663269 (License: Personal Use)

This image displays a typical灰-colored concrete masonry unit (CMU), commonly used in commercial and residential construction. The block features two longitudinal hollow cores that reduce weight while maintaining compressive strength, and its rough, aggregate-rich surface enhances mortar adhesion. CMUs are valued for durability, fire resistance, and thermal mass properties.

Used on construction material supplier websites, building code reference pages, DIY guides, and contractor resource hubs; targets architects, builders, and homeowners researching wall systems or foundation materials.