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Brimstone's carbon-negative Portland cement meets ASTM C150 building industry standard – Interesting Engineering

New cement technology offers the same applications as conventional cement with a substantially lower carbon footprint.
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A new cement created using a carbon-negative production process that utilizes carbon-free calcium silicate rock has been undergoing tests to see if it conforms to third-party ASTM C150 standards, and has been found to meet or exceed the standards for ordinary Portland cement
While conventional cement production involves heating limestone and releasing significant amounts of carbon dioxide, Brimstone has come up with a new solution that eliminates CO2 emissions from the source rock. 
On 13 July, the Oakland-based cement company received third-party certification that its cement not only meets, but exceeds the standards of Portland cement , becoming the first ultra-low carbon, carbon-neutral or carbon-negative cement to meet this critical and universally accepted industry requirement, a statement by the company reported.
Watch Brimstone Energy’s video on the carbon-neutral cement production process below:

The accomplishment validates the use of carbon-neutral cement that works the same way as regular cement in construction without compromises. 
Cody Finke, co-founder, and CEO of Brimstone states, “not only will our process slash carbon emissions and compete on price, we’ve now proven that it delivers the exact same material relied on by engineers and builders worldwide—and without forcing millions of construction workers to get retrained to use a new material.”
Additionally, Finke highlights that Brimestone applied three essential principles to decarbonize cement – producing the exact same trusted material, at much lower carbon, and at an equal or lower cost to other options.
Cement production is a substantial driver of climate change and accounts for 7.5 percent of global CO2 emissions and 5.5 percent of total greenhouse gas (GHG) emissions. 
Brimstone says that its cement production process is carbon-negative across a range of energy scenarios and provides a pathway to eliminate this footprint. 
Furthermore, the process generates magnesium compounds that permanently absorb CO2 from the air which makes it carbon-negative.
The imaginative approach allows Brimstone to produce ordinary Portland cement (OPC) and supplementary cementitious materials (SCM) while significantly reducing the carbon footprint associated with cement production.
The firm’s statement explains that since OPC makes up 95 percent of all cement produced in the US, their new solution will prove essential to the construction industry as it relies on the predictable performance of concrete made with OPC. 
“Its strength, workability, durability, and compatibility with steel and other materials—to build structures safely and efficiently,” said Brimstone.
The construction industry has been introduced to alternative new materials in the past, but none have ever met the quality mark and achieved market standard certification. They haven’t been approved due to regulatory hurdles, insurance liabilities and workforce training constraints.
Hugo Leandri, co-founder and CTO of Brimstone said: “By delivering the exact same cement, we clear away the main obstacles to adoption, offering an opportunity to dramatically speed up the path to net-zero construction. The same buildings, bridges, and roads being built today can be built tomorrow without carbon.”
Brimstone stated that it would look to sell its OPC and SCM solutions at the same price as conventionally made materials. The approved eco-friendly cement could significantly impact the real estate and construction industry, which accounts for 40% of global carbon emissions.
Marty Ozinga IV, CEO of Ozinga, an independent concrete supplier said that Brimstone’s ASTM-certified Portland cement will allow the construction industry to source more sustainable concrete without compromising performance, cost or regulatory compliance. 
“It’s a true win-win situation, enabling modern construction to prioritize both technical performance and the climate.”
The cement company is soon to deploy the new technology at scale by constructing a pilot plant on land in Nevada.


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