Concrete composition, method for manufacturing a concrete composition, and method for designing the mix of a concrete composition
A concrete composition utilizing blast furnace slag and carbonated steelmaking slag as binders with controlled surface area and particle size, along with chemical admixtures, addresses CO2 emissions in cement production, achieving reduced environmental impact and structural performance.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- NIPPON STEEL CORPORATION
- Filing Date
- 2025-12-16
- Publication Date
- 2026-07-01
AI Technical Summary
Existing concrete compositions emit significant amounts of CO2 during production due to the use of cement, and there is a need to reduce this environmental impact while maintaining structural integrity and performance.
A concrete composition using blast furnace slag powder and carbonated steelmaking slag powder as binders, along with cement and slaked lime, to reduce cement usage and incorporate calcium carbonate, which stimulates hydraulic hardening, combined with specific surface area and particle size considerations for aggregates, and chemical admixtures to control hydration and fluidity.
The composition significantly reduces CO2 emissions by minimizing cement use, achieves desired strength through alkaline stimulation, and allows for on-site mixing to adapt to site conditions, ensuring appropriate fluidity and strength for various applications.
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