Secret ingredient for high-strength bridges

Posted by
On April 1, 2014

Felt bearing pads like the one pictured above are placed between concrete girders and deck panels to prevent cracking as the bridge moves during temperature changes. (Photos by Terry Barner)

Last fall, a new bridge was built east of Jefferson City, Mo., that incorporates an unusual, high-strength concrete mix in its girders and support structure. The three-span bridge is outfitted with sensors and other instrumentation to collect data on how well the bridge performs over time.

It’s another milestone for John J. Myers, professor of civil, architectural and environmental engineering, who worked on the project with the Missouri Department of Transportation and Missouri S&T’s National University Transportation Center. Myers has spent the past decade studying and testing high-strength concrete and other innovative concrete systems for implementation.

Myers and his team found that using high-strength, self-consolidating concrete can either extend the span length of the girders — a structure’s main support member — or reduce the number of girder lines needed in a given span. Self-consolidating concrete is a high- performance concrete that can flow easily into tight and constricted spaces without separation or the need of vibration to remove trapped air. Myers believes the material will also cost less to maintain and last longer than conventional concrete.

mm
Posted by

On April 1, 2014. Posted in 2014, Around the Puck, Research, Spring 2014, Video

Recent Posts

Celebrating 150 years

Celebrating 150 years

Please join us as we honor the university’s past, celebrate its present and envision its future, fr[...]
Leading into the future

Leading into the future

Mohammad Dehghani: S&T’s ninth chancellor Mohammad Dehghani was perplexed. A project engi[...]
Learning by leading

Learning by leading

Missouri S&T students leave the university with more than a degree. They gain invaluable experi[...]
"Forged in Gold: Missouri S&T’s First 150 Years"

"Forged in Gold: Missouri S&T’s First 150 Years"

In the 1870s, Rolla seemed an unlikely location for a new college. There were only about 1,400 resi[...]
By the numbers: Fall/Winter 2019

By the numbers: Fall/Winter 2019

Missouri S&T’s rank among Missouri colleges for alumni salary potential, according to Pays[...]