To achieve that, Sublime Systems says it has replaced the traditional heat-fueled cement-making process with an electrochemical one that runs at ambient temperatures, meaning it can be achieved ...

Finally, an electrochemical process is carried out to produce calcium hydroxide – a zero-carbon precursor for cement and lime production. The ZeroCAL process of creating lime for cement ...

To sum it up briefly, cement is a climate nightmare for two main reasons. One, the process used to make cement requires super-high temperatures (I’m talking over 1,500 °C, or 2,700 °F), which ...

That’s both because of the energy used to make cement—a process that involves heating up crushed rocks to as much as 2,800 degrees Fahrenheit—and because limestone, the main material, also ...

When cement is mixed with water, sand, and gravel, it hardens into concrete—the second-most-used substance on the planet (after water). In the conventional cement-making process, emissions ...

As concrete is the second most used material on earth, behind only water, the process of making it more sustainable is a huge task. In contrast to traditional Portland cement, Prometheus Materials’ ...

Portland cement is old, making it trusted among builders. It’s been used since the 18th century, giving architects and engineers decades of knowledge on how it works.

The company is trying to get a product that is 100% ReAct approved as a replacement for cement and says its testing has shown it can meet international requirements, but the regulatory process ...

In effect, says Andrew, this is a spontaneous reversal of the cement-making process: As soon as calcium compounds in the concrete are exposed to CO 2 in the air, he says, “they will try to close ...

Process emissions are an unavoidable part of cement-making’s status quo. The core input of ordinary Portland cement — the product that makes up the vast majority of cement made today — is ...

After concrete is made, it gradually absorbs carbon dioxide from the atmosphere in a process called carbonation. With the ingredients and techniques common today, making cement produces more ...