Design and Implementation of Self-Consolidating Concrete for Connecting Precast Concrete Deck Panels to Bridge Girders
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 8
Abstract
An experimental program was undertaken to develop and evaluate the performance of self-consolidating concrete (SCC) designed for connecting precast concrete deck panels to supporting bridge girders. The effect of curing conditions on early-age expansion and shrinkage of SCC made with expansive materials was evaluated. The effect of batching sequence, concrete temperature, and superplasticizer/water demand on SCC performance was investigated. Field mockup testing was conducted to evaluate the flowability and pumpability of the proposed SCC. Test results showed that the proposed SCC can maintain high filling and passing ability for 2 h and can exhibit adequate stability. The slump flow of the recommended SCC is (), the L-box blocking ratio is greater than 0.80, the difference between slump flow and J-ring is less than 50 mm (2 in.), and the V-funnel flow time is less than 6 s. The developed SCC mixture was implemented in the construction of the Kearney East Bypass Bridge Project in Kearney, Nebraska, in August 2015. A total of () of the developed SCC was successfully placed through 100-mm (4-in.) diameter grouting/inspection holes located at 1.2-m (4-ft) spacing on the deck surface. The SCC was found to completely fill the shear pockets and haunches between the deck and the girders.
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Acknowledgments
The financial support provided by NUTC-USA (National University Transportation Center), the National Natural Science Foundation of China (NSFC) (Project No. 51208077), and The Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry (SRF for ROCS, SEM #47), is gratefully acknowledged. The authors wish to thank Euclid and CTS for providing cement and chemical admixtures. The technical assistance of Jason Cox, John Bullock, and other colleagues from the Center of Infrastructure Engineering Studies is highly appreciated.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 8 • August 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jun 16, 2015
Accepted: Dec 3, 2015
Published online: Mar 11, 2016
Published in print: Aug 1, 2016
Discussion open until: Aug 11, 2016
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