Chippewa Valley Times

An unassuming slab of concrete at the University of Wisconsin-Stout is demonstrating innovative engineering for a sustainable future. The project, overseen by Associate Professor Kevin MacDonald and executed by the Student Construction Association, aims to develop low-carbon concrete alternatives.

"This is a perfect example of why the polytechnic education works very well," said MacDonald, highlighting the educational value and real-world application of the project. Concrete production contributes significantly to global carbon emissions, making sustainable practices crucial.

The initiative was sparked by upcoming renovations to Heritage Hall, necessitating the relocation of bus shelters. MacDonald saw this as an opportunity for students to apply classroom knowledge practically. The project uses a concrete recipe that replaces traditional portland cement with blast-furnace slag, reducing resource intensity and potentially achieving carbon-negative results.

Student Jeremy O'Connor noted the challenges due to rapid setting times and environmental conditions but expressed pride in overcoming them: "We were still able to finish the concrete successfully and complete the pour through adversity."

MacDonald's extensive industry experience includes notable projects like replacing Minneapolis's Interstate 35W bridge. His work with low-carbon concrete aligns with broader industry trends toward sustainability. The Portland Cement Association's recent name change to American Cement Association reflects this shift.

"The climate change issue is an engineering problem we’re going to solve," MacDonald stated, emphasizing the role of reduced emissions in addressing environmental concerns.

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