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

• Rodríguez Lizárraga, Alicia Zulema ^[1] ; Romero Valdez, Karla Karina ^[1] ; Bernal Camacho, Jesús Manuel ^[1] ; Martínez García, Víctor Manuel ^[1]
  1. [1] Universidad Autónoma de Sinaloa

     Universidad Autónoma de Sinaloa

     México

     
• Localización: SAP Biomedical & Chemical Engineering Innovation, ISSN-e 3125-2281, Nº. 5, 2026
• Idioma: inglés
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• Resumen

  • 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).