Dean Bierwagen, P.E., Iowa Dept. of Transportation (Bridges and Structures), Iowa, USA


What design challenges does Ductal® solve for you and; how do you see it used in the future?

D. B. : 1. Applications in repair such as deck replacement (using a reduced section such as a waffle slab), where reduce weight could increase bridge capacity.

2. Increased durability; could be used in areas where normal concrete does not perform well (joint locations).

3. Consider using as an overlay in precast panels for new bridges to improve durability and reduce permeability of decks.

4. Consider using in areas where a reduced cross section or reduced weight is required.

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