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Bio-stabilised Compressed Earth Blocks (Bio-CEBs) for regenerative building

Project description

Decarbonising construction with enhanced earthen building blocks

The construction sector generates substantial greenhouse gas emissions, making urgent decarbonisation essential. Although earthen constructions are thermally efficient and locally scalable, their structural variability, particularly low strength and poor erosion resistance, limits their large-scale use. Supported by the Marie Skłodowska-Curie Actions programme, the Bio-CEBs project aims to develop a new solution by harnessing the adhesive properties of locust bean gum and sodium alginate to produce high-quality, locally sourced earth blocks. Using both materials is expected to improve durability and mechanical performance while preserving recyclability.

Objective

The construction sector plays a vital role in our economy and society, but at a high cost to the environment. Exacerbated by the climate and energy crisis, the demand for sustainable building materials is increasing. Earthen materials are sustainable due to their local availability, high thermal efficiency, recyclability and low emissions. However, due to heterogeneity, they exhibit limited mechanical performance and high susceptibility to erosion. This project concerns the development of innovative compressed earth blocks stabilised with biopolymers (Bio-CEB). Locust bean gum and sodium alginate, derived from renewable resources, are used as environmentally friendly alternatives to conventional lime or cement. By exploiting the combination of the two different molecules, the aim is to improve both the criticalities presented by earthen materials, while preserving their essence and maintaining their recyclability. An extensive experimental campaign, ranging from blocks to full-scale walls and the environmental and economic life-cycle assessment of the proposed materials, will provide fundamental design data for practical implementation. In a mix of excellence, resulting from the collaboration between EPFL, Empa, IG Lehm and Terrabloc, the Bio-CEBs project will provide a modern, safe and sustainable construction solution for regenerative building in the 21st century.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Net EU contribution
€ 292 118,88
Address
BATIMENT CE 3316 STATION 1
1015 Lausanne
Switzerland
Region
Schweiz/Suisse/Svizzera Région lémanique Vaud
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)