Since the launch of the Roadmap, substantial progress has been made. We are very proud of what the industry has accomplished together so far and are excited to see what’s next.
In the Roadmap, PCA recommended a swift and widespread shift from regular cement to portland-limestone cement (PLC), a mix that is already widely used in Europe and can immediately reduce CO2 emissions by about 10%.
The number of state Departments of Transportation, major consumers of cement, that have formally approved the use of PLC has climbed to 46 in 2022.
In California alone, the shift to PLC could result in 786,000 tonnes of CO2 potentially saved per year if a 100% shift to PLC occurred.
As of August 2022, approximately 20% of PCA member company cement plants have publicly announced plans to produce PLC, with some plants producing only PLC.
The cement industry has also called for increased funding for research and development for carbon capture, utilization and storage – CCUS. The recently passed Inflation Reduction Act has provided important updates, including greater incentives for the cement industry to develop, install and operate carbon capture and storage technologies at its facilities.
We are taking a lead in pilot projects, testing the commercial use of carbon capture in partnership with the Department of Energy, with six projects currently underway at U.S. cement plants.
Cement manufacturers are constantly pushing efficiency and looking for available, lower-carbon fuel for plants. The industry has reduced traditional fossil fuels by 15%, with 60 plants using lower-carbon sources of energy.
Reducing Emissions at the Cement Plant Focuses on the Production of Clinker and Cement
The first step in making cement is producing a binding ingredient called clinker. The production of clinker is a major source of CO2, accounting for more than 60% of the emissions from cement manufacturing.
There’s a lot of opportunity to cut emissions at this step.Learn More
When mixed with water, cement holds aggregates together and forms concrete.
Optimizing the ingredients in cement not only enhances the benefits of cement-based products, but also reduces the carbon intensity of cements.Learn More