Like Cement,
Only Better
Lower Carbon Footprint
Reliable Supply Chain
Engineered Advantages
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ABOUT
A New, Patented* Low-Carbon Alternative Binder
GRAYBOND™ is an engineered and customizable alternative cement, slag, and
fly ash produced by Graymont, one of the world’s largest calcium-based solution providers.
For a Sustainable Cement Industry
Replacing up to 35% of cement with GRAYBOND™ makes it possible to lower the GHG emissions associated with binder use.
Less Cement, Less Binder, Less GHGs
GRAYBOND™ also has the potential to reduce overall binder consumption by optimizing the chemical composition based on project-specific needs.
The Future of Construction
GRAYBOND™ presents a powerful opportunity to advance sustainable construction practices while maintaining structural integrity.
WHY GRAYBOND™?
GRAYBOND™ Benefits
Customizable
calcium lime-based high
performance binder
Game-changer for decarbonization efforts by
reducing carbon intensity
of the industrial sector
Cost competitive
with cement
Lower carbon footprint
compared to cement and
traditional binders
Familiar chemical
makeup supports existing
engineering plan
Reduces risk and
enhances flexibility
in the supply chain
APPLICATIONS
Key Applications
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.
Precast and Ready-Mix Construction Products
Achieve lower-carbon concrete mixes for use in your custom landscaping and construction projects.
CASE STUDY
Challenge
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?
Solution
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.
Result
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.
Types of Binders
The types and dosing of binders used in the testing program are listed below.
- Untreated-Control
- 4% Hi-Cal Quicklime
- 4% Cement
- 4% GRAYBOND™
Challenge
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.
Solution
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.
Result
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.
CASE IN POINT
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).
CASE STUDY
Developing GRAYBOND™:
A Slag Alternative for Paste Backfill Operations
Challenge
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.
Solution
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.
Result
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.
CASE IN POINT
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).
RESOURCES
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CONTACT
How Can GRAYBOND™ Strengthen Your Project?
Contact us to learn how high-performance, low-carbon alternative cement binder solutions can enhance your next mining or construction project.