Facing blocks - for facades of buildings

摘要

Fabrication of facade facing panels, by superimposing a second layer of mineral aggregate on a first layer of mineral aggregate, optionally of the same kind but of smaller dimensions, pressing it down under low pressure to cause it to penetrate the first layer, then superimposing on it a third layer of concrete or cement etc. the whole assembly being held together either by the concrete when this is used in the liquid state or pref. by means of a layer of a binder introduced between the large size mineral aggregate and the concrete, which can be used either in liquid form or as pre-fabricated blocks.