Butong bubble concrete
The Swedish company Butong presented its Bubble concrete during the MaterialDistrict. Butong bubble concrete panels are made by compressing two ‘doubled’ moulds. In this way, a material with regular cavities and a more or less light-filtering properties is created . The way the molds are brought together determines the filter effect of the panel. The panels have holes or cavities on both sides in a hexagonal pattern. The cells of the two sides of the matrix are connected, so that the panel retains its uniform thickness. In its semi-hard state, panels can be easily deformed or cut to size. The panels are suitable for architectural and interior application, such as ceilings or for vertical gardens, or can be used to create objects such as lampshades. The holes can be filled with different colors of concrete, glass or left open, depending on the requirements.
By adding titanium oxide in the liquid concrete, the panel also removes nitrogen oxides from the air.
The panels have a density of 10 – 20 kg/m², depending on the desired transparency and strength. Butong panels do not have a limited size. Larger panels are possible, but must then be made on site and will therefore be more expensive. Panel depths vary depending on the matrix and desired translucency and strength.
More in Innovative Materials 2019 number 2