The Minnesota Department of Transportation (MnDOT) along with the National Road Research Alliance, has launched a pioneering study to explore alternative concrete paving mixtures aimed at reducing the global warming potential (GWP) during construction while maintaining or exceeding the long-term performance of conventional mixtures. The research focuses on the development and testing of 16 experimental test cells at the Minnesota Road Research Facility (MnROAD). This project underscores MnDOT’s commitment to climate change mitigation through innovative construction practices.
The study’s primary objectives include creating a comprehensive matrix of test sections and a construction quality assurance (QA) plan to ensure the efficacy and durability of the new concrete mixtures. Detailed documentation within the report outlines the specific concrete mixtures evaluated, the extensive list of tests performed on plant-produced concrete, and observations from the construction process. A preliminary assessment of the environmental impact of these mixtures has also been included, providing a foundational understanding of their potential benefits.
MnDOT is committed to transparency and continuous improvement. Follow-up studies will offer annual performance updates and detailed lab testing results over the next three years, assessing the real-world application and durability of these sustainable concrete mixtures. These findings will be made available to the public, highlighting MnDOT’s proactive steps towards environmentally responsible infrastructure development
Read the full report here: https://mdl.mndot.gov/items/NRRA202401