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Durability of Concrete Bridge Decks with Reduced Reinforcement

Dagher, H. / Hamilton, W. / Kulendran, S.

Abstract The premature deterioration of concrete bridge decks in regions where deicing chemicals are used has created a multi-billion dollar problem in the United States. In this paper, a simple method to extend the life of new concrete bridge decks is explored: the reduction of deck reinforcement. When a reinforcing bar corrodes, its volume will increase, and eventually, the surrounding concrete will crack. With less steel, there will be less material corroding and expanding, and a longer deck life may result. Rather than attempt a precise proof for this thesis, a number of supporting arguments are made. An approximate procedure to estimate the possible gains in deck life resulting from reduced reinforcement is described. The procedure is based on a smeared-cracking finite element model.

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Durability of Concrete Bridge Decks with Reduced Reinforcement

Dagher, H. / Hamilton, W. / Kulendran, S.

Abstract The premature deterioration of concrete bridge decks in regions where deicing chemicals are used has created a multi-billion dollar problem in the United States. In this paper, a simple method to extend the life of new concrete bridge decks is explored: the reduction of deck reinforcement. When a reinforcing bar corrodes, its volume will increase, and eventually, the surrounding concrete will crack. With less steel, there will be less material corroding and expanding, and a longer deck life may result. Rather than attempt a precise proof for this thesis, a number of supporting arguments are made. An approximate procedure to estimate the possible gains in deck life resulting from reduced reinforcement is described. The procedure is based on a smeared-cracking finite element model.

Durability of Concrete Bridge Decks with Reduced Reinforcement

Dagher, H. / Hamilton, W. / Kulendran, S.

Abstract The premature deterioration of concrete bridge decks in regions where deicing chemicals are used has created a multi-billion dollar problem in the United States. In this paper, a simple method to extend the life of new concrete bridge decks is explored: the reduction of deck reinforcement. When a reinforcing bar corrodes, its volume will increase, and eventually, the surrounding concrete will crack. With less steel, there will be less material corroding and expanding, and a longer deck life may result. Rather than attempt a precise proof for this thesis, a number of supporting arguments are made. An approximate procedure to estimate the possible gains in deck life resulting from reduced reinforcement is described. The procedure is based on a smeared-cracking finite element model.

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Title:

Durability of Concrete Bridge Decks with Reduced Reinforcement

Contributors:

Dagher, H. (author) / Hamilton, W. (author) / Kulendran, S. (author)

Published in:

Bridge Evaluation, Repair and Rehabilitation ; 603-615

NATO ASI Series ; 187

Publication date:

1990-01-01

Size:

13 pages

ISBN:

978-94-009-2153-5 , 978-94-010-7469-8

ISSN:

DOI:

https://doi.org/10.1007/978-94-009-2153-5_44

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Reinforced Concrete , Crack Width , Bridge Deck , Wheel Load , Reinforced Concrete Structure Engineering , Building Construction , Civil Engineering , Characterization and Evaluation of Materials

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