Delta S may be the saving grace that could cut down on costs and increase the livelihood of asphalt in construction projects. Created by chemist John Warner and his colleagues at Warner Babcock Institute of Green Chemistry, Delta S is a non-toxic molecule that reverses oxidation in asphalt. Delta S does this “by pulling off the old petroleum from the pieces of stone aggregate, then binding the whole substance together. By restoring the binder in recycled asphalt to its original performance, the molecule allows as much as 50 percent of the asphalt to be reused with the same performance and lifespan as new asphalt.”
This could truly change the game for asphalt and in mending streets around the world. By using recycled concreted, companies can cut down on cost while being kind to the environment.