Why does dry cement mix crumble?

Dry cement mix crumbles primarily due to its composition, which includes fine particles that can easily break apart when not properly hydrated. When mixed with water, the cement particles form chemical bonds that create a solid structure; without this, the mix remains brittle and lacks cohesion. Additionally, exposure to moisture or humidity can lead to clumping or hardening, further contributing to crumbling. Proper storage and mixing are essential to maintain the integrity of dry cement.