CE22 - Sociétés urbaines, territoires, constructions et mobilité

Digital construction with renewable binder and ecological activation for thermally efficient elements – BREATHE

Submission summary

The construction sector has a crucial impact on energy consumption and carbon emissions. Over the last 20 years, more concrete was produced than any other synthetic material: roughly 35 billion tons. However, concrete is blamed for a variety of environmental problems. As yet, in the foreseeable future, there is no viable alternative to concrete to meet our society’s needs and mitigate the ongoing climate changes. Thus, the construction industry needs to benefit from an increased level of technology in order to reduce its carbon footprint
.
Since a transformation of the construction sector is key to ensuring that these environmental ambitions are fulfilled, rethinking the use of concrete through 3D printing or additive manufacturing – either directly on-site or precast – is crucial. For the additive manufacturing of construction materials, two techniques can be used: the extrusion of fresh concrete/mortar and the selective binding of a loose particle-bed by a fluid.

The aim is to focus on the Selective Cement Activation (SCA) method, which consists of activating a powder made from a mix-design of bonding mineral mixed with granulates (sand with or without gravel, depending on the desired resolution) by injecting or spraying a solution composed of water and additives

This project statement addresses this innovative 3D printing process which aims to reduce the use of raw materials, employ bio-based materials and lower the environmental impact of concrete construction by producing innovative blocks named BREATHE (Brick Renewable Ecological Activated Thermally Hygroscopic Efficient).

The BREATHE project aims to join together the mechanical benefit of mortars with Calcium-Sulfo-Aluminate cement, the thermal benefit of bio-based construction materials (hempcrete which is an assembly of lime and hemp shives), and the technology benefit of the SCA 3D printing technique.

Project coordination

Alexandre PIERRE (LABORATOIRE DE MECANIQUE ET MATERIAUX DU GENIE CIVIL - EA 4114)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

L2MGC LABORATOIRE DE MECANIQUE ET MATERIAUX DU GENIE CIVIL - EA 4114

Help of the ANR 214,678 euros
Beginning and duration of the scientific project: - 36 Months

Useful links

Explorez notre base de projets financés

 

 

ANR makes available its datasets on funded projects, click here to find more.

Sign up for the latest news:
Subscribe to our newsletter