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Organic Concrete. Smart materials or smart ass?

At the Lisbon Biennial, the Portuguese practice Extrastudio is asking us to reflect on the increasingly fine line between urban space and nature via an innovatory material: organic concrete. Exploiting concrete’s intrinsic ability to hold humidity, casting a gaze at the cracks in our cities and perhaps having read Marcovaldo, Extrastudio is proposing the application of organic concrete as a living surface in urban public spaces.

Seeds and soil are incorporated directly into the slabs so as to collect water and allow plants to grow; and two layers of metal mesh are sunk into the concrete to make it stronger. The designers are only suggesting horizontal use for the moment but they are working on a vertical version of their invention. M.P.

http://www.extrastudio.pt

Organic concrete: technical data 
The material consists in a reinforced concrete slab with turf incorporated in a percentage ranging from 10% to 30% in order to obtain a more dispersed or a denser pattern, uncompromising its mechanical resistance. In section the concrete is interrupted by parts of pre-compressed turf reaching both sides of a 30-50 mm slab, allowing the root system of plants to connect to the ground.
Credits
e-studio (project team: João Ferrão, João Costa, Ribeiro Sónia Oliveira, Anu Lassila Sónia Caldeira, Inês Bordado)
Client: Experimentadesign
Project: 2005
1st phase prototypes: e-studio
2nd phase prototypes and production: Constromat, lda
Photography: Jose Pedro Tomaz
Photo Jose Pedro Tomaz
Photo Jose Pedro Tomaz
Photo Jose Pedro Tomaz
Photo Jose Pedro Tomaz

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