System and method for making and applying a non-portland cement-based material

• Main Authors: Schrell, Andreas, Camali, Eugene James, Benz, Robert George
• Format: Patent
• Language: English
• Published: 26.07.2024
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

Sewer refurbishing and concrete restoration and construction may involve the application of shotcrete, which may be pneumatically projected towards the surface in need of repair or construction. This shotcrete includes materials found in basic concrete, such as, sand, Portland cement, and liquid. Previous methods have attempted to alter the material composition of the shotcrete in order to obtain certain benefits. Accordingly, some approaches have involved the use of geopolymers. However, these materials are often subject to corrosion as a result of the organic material inherent in these products. The present invention provides a system and method for applying a construction material. The method may include mixing blast furnace slag material, geopolymer material, alkali-based powder, and sand at a batching and mixing device to generate a non-Portland cement-based material. The method may also include transporting the non-Portland cement-based material from the mixing device, through a conduit to a nozzle and combining the transported non-Portland cement-based material with liquid at the nozzle to generate a partially liquefied non-Portland cement-based material. The method may further include pneumatically applying the partially liquefied non-Portland cement-based material to a surface. The construction material includes volcanic rock flour, blast furnace slag, sand and alkali.