Masonry unit e.g. for retaining walls, embankments, made from stone as prefabricated concrete element for wall and concrete element is made of building waste using removed materials where side view consists of natural stones

摘要

The masonry unit is made from stone as a prefabricated concrete element for a wall. The concrete element is made of a building waste using removed materials where a side view consists of natural stones. The mixing of removed material consisting of brick, lime sandstone and broken natural stone brick-work and concrete granulates is 0-30 mm in diameter. The unit is higher at the front side and the rear has an area for filling of material. The stone is trapezoidal.