Rice husk concrete: a sustainable alternative for construction in West Africa

Research led by Edem Chabi at the University of Lorraine and the University of Abomey-Calavi reveals that rice husk concrete can improve thermal performance while reducing agricultural waste. This material, with a thermal conductivity of 0.070 to 0.171 W/(m.K), represents an innovative solution for the construction sector in Benin, in the face of current environmental challenges.

The environmental impact of the construction sector is a growing concern, with high energy consumption and significant CO2 emissions. Edem Chabi's research focuses on integrating rice husk into concrete, a material often overlooked, to offer a sustainable and economical solution in a context of limited resources in West Africa.

The study's results show that the use of rice husk does not hinder cement setting, unlike other aggregates. However, mechanical strength can decrease by up to 60% in the event of desiccation. The thermal conductivity range of rice husk concrete, between 0.070 and 0.171 W/(m.K), highlights its potential to improve the thermal insulation of buildings.

For decision-makers, rice husk concrete represents a strategic opportunity. By adopting this solution, they can meet growing demand for eco-friendly construction while reducing material costs. Conducting case studies to demonstrate the material's performance is essential to encourage its adoption in the field.

« "Using rice husk in concrete improves thermal performance while reducing agricultural waste, but managing the decline in mechanical strength in the event of desiccation is crucial." - Edem Chabi »

« "Rice husk concrete paves the way for sustainable construction solutions in West Africa, and it is essential to inform decision-makers about these innovations." - the Lektaris team »