Aragonite additive for smoother, stronger, and more easily 3D-printable building materials

This technology is an aragonite-based additive for construction materials that enhances the flow, printability, and strength of cement and other building materials used in modern construction.

Unmet Need: Better flow control for advanced building materials

Modern construction methods, including automated placement and 3D printing, require materials that can be placed smoothly yet retain their shape almost immediately. Traditional cement additives, such as limestone or calcite, often fail to provide both flowability and stability, leading to printed layers that slump or deform. There is a need for simple, widely compatible additives that support smoother material deposition and better structural performance.

The Technology: Construction material additive that improves material flow and strength

This technology is a functional aragonite-based additive that enhances the behavior of building materials during placement or 3D printing. When mixed with cement, clay, gypsum, lime, or other base materials, aragonite helps the mixture flow more smoothly during dispensing while still retaining its shape once placed. These improvements result in more precise and reliable shapes, improved layer stability, and up to 12% higher flexural strength compared to comparable mixtures without aragonite.

Applications:

• 3D-printed concrete and other construction materials
• Prefabricated building components
• Residential and commercial construction materials
• Additive for building mixtures made of clay, lime, gypsum, or biopolymer
• Complex or multi-layer structures such as walls, beams, and cantilevers
• Automated or robotic construction systems

Advantages:

• Enables smoother placement and more consistent material flow
• Improves shape stability during and after printing
• Increases flexural strength of finished structures
• Works with many common building materials
• Compatible with existing mixing and fabrication workflows
• Supports higher-precision 3D printing and automated construction

Lead Inventor:

Shiho Kawashima, Ph.D.

Patent Information:

Patent Pending (WO/2024/249956)

Related Publications:

• Williams JM, Zhao D, Zhang N, Chin A, Kawashima S, Moment AJ. “Directed synthesis of aragonite through semi-continuous seeded crystallization methods for CO2 utilization.” CrystEngComm. 2023 Oct 19; 25: 6050-6066.

• Zhao D, Williams JM, Li Z, Park AHA, Radlińska A, Hou P, Kawashima S. “Hydration of cement pastes with calcium carbonate polymorphs.” Cement and Concrete Research. 2023 Jul 22; 173: 107270.

• Zhao D, Williams JM, Park AHA, Kawashima S. “Rheology of cement pastes with calcium carbonate polymorphs.” Cement and Concrete Research. 2023 Jun 14; 172: 107214.

Tech Ventures Reference:

• IR CU23290

• Licensing Contact: Dovina Qu