Description

The Concrete Block Mattress (CBM) is a rectangular unit made of concrete blocks joined together by polypropylene ropes. The mattress is flexible in two dimensions and is available in a range of thicknesses to suit the conditions required. The CBM is used for the anchorage and protection of underwater pipelines and cables and for protecting the foundations of structures against water scouring. Materials used are selected to offer the required design life in sea water and are chemically stable; there is no significant reduction in compressive strength of the concrete blocks. Lifting of the CBM is carried out using a lifting frame which connects to the lifting loops. The high degree of flexibility allows the mattress to bend without compromising its integrity.