‘The bridge that eats smog’

An intriguing innovation employed in the bridge construction is found in the concrete itself. Figg describes a wonder material called photo-catalytic titanium dioxide, which accelerates the decomposition of organic material. In other words, it eats pollution.

“The cement has a nanotechnology in it such that when UV light hits the surface of the concrete, it creates a photo-catalytic reaction that cleans pollution out of the air,” Figg said. “It is a pollution-eating kind of concrete and it is also self-cleaning.”

The new I-35W is the only bridge in the U.S. to employ the pollution-eating technology to date.

source

Concrete used on the I-35W is considered high-performance, containing silica fume and fly ash for low permeability and a longer life span.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s