Concrete corner column lost shuttering block - is square based with bearing joints filled with coarse concrete for force locking

摘要

The shuttering block, has a square base area, and its external side lengths (S) equal the thickness (D1) of the adjoining walls (W). One bearing surface (L), at least, is shaped so that, when coarse concrete is filled in and compacted, the outside edge bearing joints (KL) are also filled, producing form-locking connection between the block's bearing surfaces. Insulating material (D) may be provided on the outsides, while inner sides can have cutouts (AS).