Low-Cracking, High-Performance Concrete Bridge Decks: Case Studies over First 6 Years
McLeod, Heather A. K.
Scholarly/refereed, publisher version
Copyright © 2010, © SAGE Publications.
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Cracks in concrete bridge decks provide easy access for water and deicing chemicals that shorten the life of the deck, and field surveys show that the problem has become progressively more severe since at least the 1980s. A two-phase, 10-year Pooled Fund study to minimize cracking in bridge decks is now under way. Twenty bridge decks have been constructed in the program to date. Comparison with conventional decks shows that the techniques embodied in low-cracking, high-performance concrete (LC-HPC) bridge deck specifications have been highly successful in reducing cracking in bridge decks. The results also show that highslump high-strength concretes result in greater cracking in bridge decks than low-slump, moderate-strength concretes and that concrete temperature control and early application of curing counteract the negative effects of casting concrete under high-temperature conditions. Early owner and contractor buy-in is needed for successful LC-HPC bridge deck construction, and top performance requires the adherence to all aspects of the specifications.
David Darwin, JoAnn Browning, Will Lindquist, Heather A. K. McLeod, Jiqiu Yuan, Miriam Toledo, and Diane Reynolds, "Low-Cracking, High-Performance Concrete Bridge Decks: Case Studies over First 6 Years", Transportation Research Record (No. 2202) pp. 61-69. Copyright © 2010 AGE Publications. DOI: 10.3141/2202-08.
Darwin, D., Browning, J.P., Lindquist, W., McLeod, H.A.K., Yuan, J., Toledo, M., and Reynolds, D., "Low-Cracking, High-Performance Concrete Bridge Decks - Case Studies over First 6 Years," Transportation Research Record, No. 2202, December 2010, pp. 61-69.
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