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This highly engineered, clean cement has similar (or better!) ultimate strength, durability, slump, and set time as the cement we use today for our buildings and infrastructure.
Our ASTM C1157-compliant cement will be the first to commercial scale that approaches “true-zero” emissions — rather than just “net-zero” — by avoiding CO₂, NOx, SOx, mercury, and particulates in the first place and foregoing the need for carbon capture and storage.
The desires of the construction ecosystem are at the center of our work. Our ASTM C1157 Sublime Cement works with existing concrete equipment and operations can be more durable, whiter in color, lower density, and consistent quality, for both aesthetic and functional benefits.
Sublime Cement manufacturing doesn’t emit CO₂ that then needs to be cleaned up with expensive, complex carbon capture and storage (CCS) infrastructure. Because we replace the kiln, we can ultimately scale down the cost to match the kiln.
Emissions Impact
Avoids combustion processes
Full replacement
for OPC in most applications
Cost parity
at scale
Scalability
% of global supply potential
Sublime Cement™
Cement today (OPC)
OPC + Carbon Capture
Supplementary Cementitious Materials
Carbonated / CO₂-Cured
Sublime CementTM
Emissions Impact
Full Replacement
for OPC in most applications
Scalability
% of global supply potential
Avoids combustion processes
Cost Parity
at scale
Cement today (OPC)
Emissions Impact
Full Replacement
for OPC in most applications
Scalability
% of global supply potential
Avoids combustion processes
Cost Parity
at scale
OPC + Carbon Capture
Emissions Impact
Full Replacement
for OPC in most applications
Scalability
% of global supply potential
Avoids combustion processes
Cost Parity
at scale
Supplementary Cementitious Materials
Emissions Impact
Full Replacement
for OPC in most applications
Scalability
% of global supply potential
Avoids combustion processes
Cost Parity
at scale
Carbonated / CO₂-Cured
Emissions Impact
Full Replacement
for OPC in most applications
Scalability
% of global supply potential
Avoids combustion processes
Cost Parity
at scale
Alkali-Silica Reaction (ASTM C1260/C1239, AASHTO T380)
Rapid Chloride Permeability Test (RCPT) (ASTM C1202)
Electrical Surface Resistivity (AASHTO T358)
Drying Shrinkage of Concrete (ASTM C157)
Sulfate Attack (ASTM C1012)
Freeze-thaw resistance (ASTM C666)
Third-party validations ensure our performance, safety, and emissions reduction impact.
American Engineering Testing ensured our product meets ASTM C1157, the standard performance specification for hydraulic cement.
Our Safety Data Sheets ensure our product complies with OSHA’s Hazard Communication Standard 29CFR1910.1200 and can be safely handled just like the cement the world is used to.
Climate Earth completed our screening life cycle assessment (LCA), validating our process’ path to a >90% reduction in cement’s global warming potential.
The global construction industry is rightfully mindful of safety and cautious about new materials. We’ve developed a comprehensive validation process — that starts in our lab and ends in the field — to earn their trust.
Here’s how we got there
Calorimetry tests heat of hydration, indicators of early-age behavior and strength development.
We test for flowability, compressive strength, and admixture compatibility.
We test for the concrete’s fresh and hardened durability properties.
External, ASTM-validated labs test our material across strength and durability parameters.
Local ready-mix partners test our cement’s performance in their concrete mixes.
We ensure our material can mix and pour out of a truck and set and finish when placed by concrete contractors.
This all leads up to field construction projects, where our material is mixed at the batching plant, transported in ready-mix trucks, pumped, placed, and finished into a final hardened concrete slab.
We test for flowability, compressive strength, and admixture compatibility.
External, ASTM-validated labs test our material across strength and durability parameters.
We ensure our material can mix and pour out of a truck and set and finish when placed by concrete contractors.
Here’s how we got there
Calorimetry tests heat of hydration, indicators of early-age behavior and strength development.
We test for flowability, compressive strength, and admixture compatibility.
We test for the concrete’s fresh and hardened durability properties.
External, ASTM-validated labs test our material across strength and durability parameters.
Local ready-mix partners test our cement’s performance in their concrete mixes.
We ensure our material can mix and pour out of a truck and set and finish when placed by concrete contractors.
This all leads up to field construction projects, where our material is mixed at the batching plant, transported in ready-mix trucks, pumped, placed, and finished into a final hardened concrete slab.
We test for flowability, compressive strength, and admixture compatibility.
External, ASTM-validated labs test our material across strength and durability parameters.
We ensure our material can mix and pour out of a truck and set and finish when placed by concrete contractors.
Here’s how we got there
We replace carbon-intensive limestone with calcium silicate minerals or industry wastes
We test for the concrete’s fresh and hardened durability properties.
Local ready-mix partners test our cement’s performance in their concrete mixes.
This all leads up to field construction projects, where our material is mixed at the batching plant, transported in ready-mix trucks, pumped, placed, and finished into a final hardened concrete slab.
We test for flowability, compressive strength, and admixture compatibility.
External, ASTM-validated labs test our material across strength and durability parameters.
We ensure our material can mix and pour out of a truck and set and finish when placed by concrete contractors.
Here’s how we got there
We replace carbon-intensive limestone with calcium silicate minerals or industry wastes
We test for the concrete’s fresh and hardened durability properties.
Local ready-mix partners test our cement’s performance in their concrete mixes.
This all leads up to field construction projects, where our material is mixed at the batching plant, transported in ready-mix trucks, pumped, placed, and finished into a final hardened concrete slab.
We test for flowability, compressive strength, and admixture compatibility.
External, ASTM-validated labs test our material across strength and durability parameters.
We ensure our material can mix and pour out of a truck and set and finish when placed by concrete contractors.
We produce Sublime Cement out of our 250TPY pilot facility in Somerville, MA and are developing our first commercial kiloton facility to open in Holyoke, MA. Inquire about partnering today around a testing deployment or reserving Sublime Cement produced out of Holyoke.
Corporate
Sublime Systems
28 Park Street
Somerville, MA 02143
Contact
info@sublime-systems.com
+1 617 831 4328
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