What is a Cement Block?
A cement block may also be called a concrete block, a foundation block, or a concrete masonry unit (CMU). It is also known as a breeze block, a cinder block, or a clinker block. These blocks are made with a mixture of Portland cement, aggregate, and water. The standard size is listed as 8 inches x 8 inches x 16 inches (20 cm x 20 cm x 41 cm) in the US and 44 cm x 21.5 cm x 10 cm (17.3 inches x 8.5 inches x 3.9 inches) in the UK, although the blocks are actually a bit smaller to allow room for mortar joints. Some cement block companies will make other sizes upon request.