Clam Shells (Megapitaria Squalida) For The Manufacture Of Mineral Additives In Concrete Mixes

Alicia Zulema Rodríguez Lizárraga, Karla Karina Romero Valdez, Jesús Manuel Bernal Camacho and Víctor Manuel Martínez García

SAP Biomedical & Chemical Engineering Innovation, 2026

Abstract: This research analyzes the feasibility of using chocolate clam shells (Megapitaria squalida) as a mineral additive in concrete mixtures to reduce the environmental impact of marine waste and the high consumption of Portland cement. A quantitative methodological approach was applied, including the collection, cleaning, crushing, calcination, and grinding of the biomaterial, followed by compressive strength and durability tests on concrete specimens with 10% partial cement replacement. The results showed that shells calcined at 800°C and 1000°C exhibit suitable pozzolanic properties and improve the mechanical strength of concrete, exceeding the values obtained in reference mixtures. Likewise, electrical resistivity tests indicated a very low chloride penetration, demonstrating high durability and good protection against steel reinforcement corrosion. The findings confirm that Megapitaria squalida shells, due to their high calcium carbonate (CaCO₃) content, represent a sustainable and economically viable alternative for producing eco-friendly concrete. Their incorporation contributes to reducing CO₂ emissions associated with cement manufacturing, promoting practices aligned with the Sustainable Development Goals (SDGs).

Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:cwf:evkart:evk2026381

DOI: 10.56294/evk2026381

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