OYSTER  CONCRETE ® 

Calcium Carbonate- based Concrete

Calcium carbonate-based concrete, derived from oyster shells, presents a sustainable and innovative alternative to traditional concrete. By leveraging the high calcium carbonate (CaCO) content of shells, this material repurposes an abundant byproduct of the shellfish industry, reducing waste while lowering the carbon footprint of construction.

After cleaning, grinding, and processing into fine calcium powder, oyster shells can be incorporated into concrete in several ways: as a partial cement replacement, as aggregate, or as a mineral activator. This method helps reduce sand and limestone extraction while decreasing the energy-intensive production of Portland cement, a major contributor to CO emissions.

From a technical standpoint, this concrete offers unique mechanical and aesthetic properties—a distinctive texture, natural hues, and enhanced resistance to marine environments, particularly against salt-induced deterioration. However, further research is needed to optimize its chemical compatibility with traditional binders and assess its long-term durability.

Through my experimentation, I aim to develop a structural and decorative material that integrates seamlessly into architecture, design, and coastal infrastructure. This project embodies a circular economy approach, transforming industrial waste into a valuable resource for the future of sustainable construction.

Environmental Advantages:
- Biodegradability & Recyclability: Some plant-based glass materials decompose naturally or are hot compostable.
- Lower Carbon Footprint: Producing plant-based glass requires less energy than traditional glass, which must be melted at extremely high temperatures. 
- Renewable Resources: Unlike traditional silica sand (which is being depleted), plant-based glass relies on fast-growing crops.

Technical Properties:
- Lightweight & Strong: lighter and more impact-resistant than conventional glass.
- Customizable Transparency: can be fully transparent or slightly translucent.
- Thermoformable: can be shaped at lower temperatures, making them more energy-efficient to produce.