Modifying the Microstructure of Concrete to Decrease Emissions

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Figure 3: In this novel MIT Concrete Sustainability Hub experimental setup, a half-inch tire of rigid steel rolls along a polymer pavement, providing a detailed look at the interaction between the wheel and the pavement structure. Tests show that the maximum pavement deflection is just behind the path of travel; in effect, the wheel is constantly rolling uphill. Making road surfaces stiffer — for example, by adding a concrete layer — would mitigate that effect, decreasing wasted fuel and associated emissions.

Photo: Stuart Darsch

Figure 3: In this novel MIT Concrete Sustainability Hub experimental setup, a half-inch tire of rigid steel rolls along a polymer pavement, providing a detailed look at the interaction between the wheel and the pavement structure. Tests show that the maximum pavement deflection is just behind the path of travel; in effect, the wheel is constantly rolling uphill. Making road surfaces stiffer — for example, by adding a concrete layer — would mitigate that effect, decreasing wasted fuel and associated emissions.

Photo: Stuart Darsch

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