Alinabiwe Nyamuhanga Ally, Élodie Ruffine Zang
The mining process involves drilling and excavation, resulting in the production of waste rock and tailings. This study aims to evaluate the mechanical strength and the environmental and economic impact of using Coltan Mining Waste (CMW) as a substitute for aggregates in concrete and mortar production. To achieve this, the CMW needs to be characterised. The Dreux Gorisse method was primarily used to produce concrete with a strength of 20 MPa at 28 days. The mortars were formulated according to the NF P 18-452 standard. The environmental impact of using CMW as substitutes for natural aggregates in the production of concrete and mortar was analysed using SimaPro software. The results showed that mortars and concrete made with CMW have comparable compressive strengths to the reference mortar and concrete, reduce the negative impact on ecosystem quality, human health, resources, and climate change. It has also been shown that the substitution of aggregates by CMW reduces the cost of concrete and mortar as a function of the distance from the aggregate footprint.
@article{0a128370-75c2-4a53-8f39-dd04a8e9ea14,
title={Substitution of Aggregates in Concrete a},
author={Alinabiwe Nyamuhanga Ally and Élodie Ruffine Zang},
year={2026},
language={en}
}TY - JOUR TI - Substitution of Aggregates in Concrete a AU - Alinabiwe Nyamuhanga Ally AU - Élodie Ruffine Zang PY - 2026 LA - en ER -
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