Next-gen cement, so we can keep building.
Sublime’s technology makes cement more efficiently, while co-producing critical minerals. Sublime Cement® is a cleaner, more durable, and whiter replacement for today’s portland cement.
Sublime’s breakthrough manufacturing process makes cement more efficiently, while co-producing critical minerals. Sublime Cement® is cleaner, more durable, whiter, and is an industry-accepted replacement for today’s portland cement.
Sublime’s technology makes cement more efficiently, while co-producing critical minerals.
Sublime Cement® is a cleaner, more durable, and whiter replacement for today’s portland cement.
Up to 50% of feedstock and 40% of energy are lost in conventional cement production
Our technology avoids waste and pollution to make clean, beautiful, durable cement anywhere, out of almost anything.
Improves energy efficiency
Sublime’s process foregoes the kiln, the most energy-intensive part of OPC production, and replaces it with a targeted electrochemical process—reducing the energy intensity of production by 30%-40%.
Avoids pollution
Our technology avoids emissions from CO2, CO, NOx, SOx, mercury, and particulates that burden operations, hurt communities and families, and cause climate change.
Unlocks previously inaccessible minerals
We convert low-value rocks and toxic industrial solid waste into clean cement and pure minerals. We up-cycle the whole rock, leaving nothing wasted, compared to ~50% of limestone feedstock that is lost as pollution in OPC manufacturing.
Increases durability
Based off the old Roman recipe, Sublime Cement is more durable than today’s OPC cement in almost every use case—a legacy that stands the test of time.
Replaces OPC in concrete
Sublime Cement replaces OPC to form the durable, reliable concrete our world needs to keep building.
Produces beautiful cement
Our inherently purifying, ambient-temperature process makes Sublime Cement that is whiter in color, a quality desirable for aesthetics and heat reflectivity.
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- Energy efficient
- Pollution avoiding
- Waste reducing
- More durable
- Beautiful cement
We are more energy efficient than today’s average kiln, with a path to 40% energy savings. Our ambient process can easily ramp up and down, integrate with a modern grid.
Avoids emissions from CO2, CO, NOx, SOx, mercury, and particulates that burden operations, hurt communities and families, and cause climate change.
Can convert almost any rock—including toxic industrial solid waste—into clean cement and pure minerals. We up-cycle the whole rock, leaving nothing wasted, compared to ~50% of limestone feedstock that is wasted in OPC manufacturing.
Based off the old Roman recipe, Sublime Cement is more durable than today’s ordinary portland cement in almost every use case—a legacy that stands the test of time.
Sublime Cement is whiter, more aesthetically pleasing, and reduces the urban heat island effect when used outdoors. Goodbye grey, dirty exteriors.
The Sublime
Systems Product
Energy efficient
We are more energy efficient than today’s average kiln, with a path to 40% energy savings. Our ambient process can easily ramp up and down, integrate with a modern grid.
Pollution avoiding
Avoids emissions from CO2, CO, NOx, SOx, mercury, and particulates that burden operations, hurt communities and families, and cause climate change.
Waste reducing
Can convert almost any rock—including toxic industrial solid waste—into clean cement and pure minerals. We up-cycle the whole rock, leaving nothing wasted, compared to ~50% of limestone feedstock that is wasted in OPC manufacturing.
Cost effective
Based off the old Roman recipe, Sublime Cement is more durable than today’s ordinary portland cement in almost every use case—a legacy that stands the test of time.
Better cement
Sublime Cement is whiter, more aesthetically pleasing, and reduces the urban heat island effect when used outdoors. Goodbye grey, dirty exteriors.
Advancing a new era of clean construction — together
With financial backing from the world’s most innovative building materials and construction companies, including Holcim, CRH, Siam Cement Group, and Suffolk Construction, we’ve been deploying cement in real-world projects since 2023 and are now scaling up rapidly to meet demand. We partner with pioneers in innovation who are redefining what is possible, pressing forward with data-driven integrity.
Buildings are monuments to the values of people who build them
Centerpieces of the built environment
Deployed in high-polish interiors and harsh external environments where aesthetic appeal, enhanced durability, and urban heat island effect reduction can be prized.
CO2-conscious customers
Future-forward and impact-oriented consumers massively and cheaply reduce their carbon footprint by using Sublime Cement.
Frictionless marketplace
We test and validate to gain the trust of the world’s largest cement manufacturers, technology hyperscalers, visionary architects, major general contractors, and ready-mix concrete leaders.
Scaling rapidly to meet demand
We scaled from grams to tonnes within 3 years. Now, we’re building a kiloton-scale plant, unlocking future megaton-scale manufacturing and bringing manufacturing pride back to America.
Cement is essential. America is leading its reinvention.
From the Romans, to the Industrial Revolution, to now
Breakthroughs in cement manufacturing—from the Romans’ enduring formulas to England’s industrial innovations—have shaped the modern world. Now it’s America’s turn to drive the next revolution. By modernizing cement production, we’re not only reducing emissions and waste, we’re strengthening domestic supply chains, unleashing energy, reshoring manufacturing, co-producing critical minerals, and building a cleaner, stronger, and more resilient future.
