Minnesota Department of Transportation

511 Travel Info

Research Projects

We put your ideas in motion

Vacuum Grouting of Post Tensioned Bridges

Status:  Complete
Report Date:  02/08/2017

Summary:

Researchers provided recommendations and general guidance to assist MnDOT in developing cost-effective strategies for future investigation and repair contracts of post-tensioned bridges built in Minnesota before 2003. To develop these recommendations, researchers identified grout voids in post-tensioning ducts on two representative bridges, documented strand corrosion and repaired voids by filling them with grout.

Final Report:

Related Materials: