Plastic mould for making vertical bonds in reinforced concrete in walls made of hollow concrete blocks

摘要

The mould is made of a piece of moulded plastic 2 millimetres thick which is four sided with four lugs. The shape is designed to fit tightly inside the opening in the corner of the concrete blocks. The mould is placed in the concrete block and extends for one third of its height and fits into the opening the next concrete block. Concrete can be poured down the opening and metal bars can also be inserted.