Concrete blocks, hollow [CBH]

Concrete blocks with two or more cells (cavities) comprising more than 30% of the volume, which may be grouted and reinforced.

Concrete blocks hollow 1.JPG

Hollow concrete blocks, Peru (S. Brzev)

Hollow Concrete Blocks 1.JPG

 

 

 

 

 

 

 

 

Hollow concrete blocks with three cells, Haïti (front) and with two cells, Canada (rear), (S. Brzev)