English to Polish Tech/Engineering Construction / Civil Engineering

Numerous concrete block systems are available for erosion control.
Hand-placed interlocking masonry blocks are also possible. The voids in the blocks and spaces between them are usually vegetated. Alternatively, the system can be factory fabricated as a unit, brought to the job site, and placed on prepared soil. The prefabricated blocks are either laid on, or bonded to, a high strength geotextile substrate. The finished mat can bend and torque by virtue of the blocks being articulated with joints, weaving patterns, or cables. Such systems are generally not vegetated.