Organic stabilization in earthen plaster: Eco-compatible architecture and ancient techniques in Tata Somba homes

Abstract

The study of organic stabilization is crucial for understanding its impact on the durability and effectiveness of earthen plaster. Analyzing natural admixtures' effects on plaster properties provides insights that aid in optimizing plaster composition and application for desired characteristics. The addition of biopolymers, known to enhance plaster performance, necessitates further investigation to understand their role in earthen plaster stabilization. This study focuses on Tata Somba homes in Benin and Togo, recognized as UNESCO World Heritage sites. These unique architectural examples embody “architecture without architects”, relying solely on local traditional knowledge. The objective is to explore and revive Tata Somba's ancient eco-technology for earth plaster stabilization. Research shows that biopolymers' combined stabilization and application techniques can improve earthen plaster performance. Seven promising bio-stabilizers were identified, suggesting their potential as sustainable, effective options for CO2 mitigation in buildings. These findings not only deepen our understanding of earthen architecture but also underscore the potential of merging traditional, eco-friendly building methods with modern scientific insights to create sustainable solutions for cultural heritage preservation and contemporary built environments.