GRAYBOND™ is an engineered and customizable alternative binder produced by Graymont, one of the world’s largest calcium-based solution providers.
Mine Tailings Backfill
Enable increased resource recovery while providing a resilient tailings storage solution for underground mining.
Soil Stabilization
Create a strong base for construction projects by enhancing the strength and stability of soils.
Ready-Mix Concrete Products
Expand your supply chain by using low-carbon alternative cement without compromising on quality.
Precast Concrete Products
Cut the carbon footprint by replacing up to 50% of your cement with no trade-offs in performance.
Replacing up to 35% of cement with GRAYBOND™ makes it possible to lower the GHG emissions associated with binder use.
GRAYBOND™ also has the potential to reduce overall binder consumption by optimizing the chemical composition based on project-specific needs.
GRAYBOND™ presents a powerful opportunity to advance sustainable construction practices while maintaining structural integrity.
Soil stabilization is necessary in construction to ensure a strong and reliable foundation; however, the traditional use of cement significantly increases the carbon footprint of this process. How can optimizing the composition and dosing of GRAYBOND™ Binder based on the soil type and mineralogy lower the greenhouse gas footprint without compromising the strength of the final application?
The strength characteristics of various soil-binder mixtures, including the low-carbon GRAYBOND™ binder were tested using unconfined compressive strength testing at 7 and 28 days.
Based on the test results, the GRAYBOND™ family of binders developed by Graymont produced superior strength performance to cement and could be used as an alternative binder to cement and lime for treatment of certain soil types.
The types and dosing of binders used in the testing program are listed below.
Paste backfilling is a critical step of the underground mining cycle, enabling increased resource recovery while providing a resilient tailings storage solution. However, paste backfilling is increasingly challenged by limited availability of industrial byproduct binders, such as GGBFS, and traditional cement binders can be responsible for up to 70% of the GHG emissions in the backfill process.
GRAYBOND™ is a versatile engineered lime-based binder for paste backfill which maintains a low GHG footprint and can be made adaptable to various mine conditions, such as high sulfate ores, without compromising strength and other performance requirements.
Third party verification studies conducted on samples from a mine backfill site show how up to 50% replacement of cement with GRAYBOND CRF™ binder, purpose designed for cemented rockfill processes, provides excellent performance, maintaining at least 80% of the cement strength after seven (7) days and demonstrating performance better than cement after 90 days.
The calculated decarbonization potential of GRAYBOND™ binders is significant compared to typical cements with performance comparable to slag co-products used in the market today.
A theoretical paste plant using 40,000 tons of cement a year would produce nearly 37,000 tons of CO2 based on the 922 kg/ton of cement publish by the Portland Cement Association (PCA 2021).
The construction industry faces increasing pressure to reduce its carbon footprint but it can’t risk compromising reliability, workability, or strength for lower carbon intensity is not an option. Graymont needed to prove that GRAYBOND™ could perform in ready-mix concrete under the daily demands of a true construction setting.
GRAYBOND™ was used to replace 25% of the OPC content in concrete at Graymont’s high-traffic Indian Creek plant. The objective was to assess constructability, strength, and durability — while quantifying carbon reduction at the binder level.
Using GRAYBOND™ cut the carbon footprint of the binder by up to 20% — a meaningful reduction with no trade-offs in constructability or performance.
Paste backfilling is a critical step of the underground mining cycle, enabling increased resource recovery while providing a resilient tailings storage solution. However, paste backfilling is increasingly challenged by limited availability of industrial byproduct binders, such as GGBFS, and traditional cement binders can be responsible for up to 70% of the GHG emissions in the backfill process.
GRAYBOND™ is a versatile engineered lime-based binder for paste backfill which maintains a low GHG footprint and can be made adaptable to various mine conditions, such as high sulfate ores, without compromising strength and other performance requirements.
Third party verification studies conducted on samples from a mine backfill site show how up to 50% replacement of cement with GRAYBOND CRF™ binder, purpose designed for cemented rockfill processes, provides excellent performance, maintaining at least 80% of the cement strength after seven (7) days and demonstrating performance better than cement after 90 days.
The calculated decarbonization potential of GRAYBOND™ binders is significant compared to typical cements with performance comparable to slag co-products used in the market today.
A theoretical paste plant using 40,000 tons of cement a year would produce nearly 37,000 tons of CO2 based on the 922 kg/ton of cement publish by the Portland Cement Association (PCA 2021).
Contact us to learn how high-performance, low-carbon alternative cement binder solutions can enhance your next mining or construction project.
