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Crack Surveys of Low-Cracking High-Performance Concrete Bridge Decks in Kansas 2006-2008
Gruman, Daniel Darwin, David Browning, JoAnn
Gruman, Daniel
Darwin, David
Browning, JoAnn
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Abstract
The purpose and specifications for the construction of Low-Cracking, High-Performance Concrete (LC-HPC) bridge decks are discussed. The survey process for
evaluating the cracking performance of bridge decks is described. Seven LC-HPC decks
and seven control decks were surveyed according to this process. Crack densities were
calculated for each deck and trends in crack patterns were noted. The LC-HPC decks
yielded significantly lower crack densities than did the control decks. Most cracks in LCHPC
and control decks were oriented in the transverse direction and were located directly
above the transverse reinforcement. For superelevated decks, crack densities were
greater in areas of the deck at higher elevations, likely due to greater settlement cracking
and inadequate curing on the elevated portion of the decks.
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Date
2009-01
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University of Kansas Center for Research, Inc.
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Citation
Gruman, D., Darwin, D., and Browning, J.P., "Crack Surveys of Low-Cracking High-Performance Concrete Bridge Decks in Kansas 2006-2008," SL Report 09-1, University of Kansas Center for Research, Inc., Lawrence, Kansas, January 2009, 53 pp.