Coal Ash Spheres Reduce Concrete Cracks

Oct-30-19 Adding tiny spheres of coal ash to concrete mix could help prevent cracks from forming as the material dries.

The material, called SPorA (spherical porous reactive aggregate) was created by a team from Drexel University, who recycled coal ash to create a porous, lightweight aggregate. The material is able to absorb almost half its weight in water, which it then releases gradually into the matrix as it cures to keep cracks from forming. According to the team, the material is affordable and easy to manufacture, “…offering excellent performance characteristics that could be produced at a lower cost than current natural and synthetic options."

More Info about this Invention:

[NEWATLAS.COM]
[DREXEL.EDU]

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