Navigating Low-Carbon Cement Options, Tradeoffs, and Approval Pathways

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Removethecarbonbutnotthequality

About us

We're Prometheus Materials. We make a supplemental blend that replaces a portion of cement in a 1:1 ratio

  • Concentrated carbon reduction strategy
  • Meaningful reduction at low replacement levels
  • No changes to operations
  • Can achieve carbon NEGATIVE

Most Recent Pour

Data Center Ductbank Implementation

Location: Aurora, Colorado

Prometheus Materials successfully completed a ductbank installation using ProZERO™ for a major data center project. Approximately 63 tons of ProZERO™ were used at an 8% cement replacement level, supporting the placement of over 2,500 cubic yards of low-voltage ductbank.
Material was delivered via bulkers and stored onsite in temporary silos before being incorporated into concrete trucks using standard batching and handling practices, demonstrating compatibility with conventional ready-mix operations.

Milestones —

  • Successful ductbank installation using ProZERO™
  • Demonstrated compatibility with conventional ready-mix operations
  • Achieved customer carbon reduction goals in a low-risk application area
Duct Bank

Our Strategic Partners, Clients, and Recent Pours

logo-colorgrey
HenselPhelps
Turner
CU Boulder
Clayco
suffolk
Microsoft
DG
Skanska
brannan
cemex
SOM

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Answers to our most frequently asked questions

Where do you grow the algae?

We have strategic partners that are based in key growing climates to ensure efficiencies and effectiveness of the algae

Given the timeframe requirement for an EPD, we have a third-party LCA that demonstrates our GWP.

  1. We can achieve compressive strengths from flowable fill (150 PSI) up to 6000 PSI in both interior and exterior applications.
  2. As a result of our proprietary blended SCM formulation, we are able to maintain the same long-term performance expected from traditional cement and concrete

Dosage is based on project goals and mix specifications. For ready-mix producers, this is typically set by targeted cement replacement levels (10–40%). We work with suppliers to determine the appropriate replacement percentage needed to meet targeted GWP and carbon reduction goals within your local market.

We recommend that you or your lab conduct testing using your own materials and placement practices. We provide mix guidance and technical support throughout the process.

ProZERO™ integrates similarly to other OPC replacements (slag, natural pozzolan, fly ash, limestone, etc.). Suppliers can use existing handling and batching practices. We work with suppliers to determine the best delivery method. ProZERO™ has been delivered to partners, job sites, and batch plants via bags, super sacks, and bulker trailers.

Materials are stable under standard conditions. Store dry and protected from moisture.

We don’t have a specific sealer requirement. Water-and saline-based sealers that have been tested have performed similarly to normal OPC.

We have not seen adverse interactions with typical aggregates. Your local aggregate of choice will work. If using special or novel aggregates, additional testing may be required.

We expect this application to be viable, though it has not yet been formally tested. A trial batch is recommended prior to deployment.

Trailer or bulker. Shipping is at the cost of the buyer, FOB Longmont CO.

Short ton.