Novel Green Construction Materials

Researcher:
Prof. Konstantin Kovler | Civil and Environmental Engineering

Categories:

Chemistry & Materials | Sustainability Energy & ConTech

Technology:

Concrete durability improvement is done using fluorosilicate salts as surface treatments (“fluatization”), which are applied to hardened concrete to increase hardness, reduce dusting, and enhance resistance to wear, moisture, and frost. These treatments are widely used for concrete floors and other exposed surfaces, but their effect is largely limited to the outer layer of the material.
This novel technology transforms hexafluorosilicic acid (H₂SiF₆)—a toxic by-product of the phosphate fertilizer industry—into high-value construction materials and active mineral additives for concrete. Through controlled reactions with cementitious and aluminosilicate materials such as cement, gypsum, lime, and clays, the process converts hazardous waste into stable mineral phases, including fluorite and tobermorite crystals. Unlike conventional surface treatments, the technology enables incorporation of the active material directly into building products and concrete mixtures, resulting in enhanced durability, chemical resistance, and long-term performance. In addition to improving material properties, the technology offers an environmentally sustainable solution for valorizing millions of tons of industrial waste currently requiring costly disposal and neutralization.

Advantages:

  • Waste valorization and sustainability, Scalable circular-economy solution
  • Improved durability
  • Bulk performance enhancement, Enhanced resistance, Reduced porosity
  • Cost-effective raw materials

Applications and Opportunities:

Construction materials: Concrete admixtures and mineral additives, Precast building products, Flooring, Infrastructure, Artificial stone and decorative building products

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Shikma Litmanovitz
Director of Business Development, Physical Science
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