Bridge Analysis, Design and Repair

Single Abstract

342693 - Potential Mitigation of Shrinkage Cracking in Bridge Decks Using Type-K Cement

Saturday, April 21
10:00 AM - 11:30 AM
Location: 203A

Cracks in concrete bridge decks shorten the life of deck by providing easy access for deicing chemicals. Most of the bridge decks suffered from early age transverse cracking due to drying shrinkage. Mitigation of shrinkage cracking in concrete bridge decks remains a challenging problem across the world. This study investigates the use of Type-K cement as a shrinkage reducing material to potentially reduce cracking in bridge decks due to drying shrinkage. In order to alleviate phenomenon of early age shrinkage cracking, experimental work along with field investigations are presented. This study was divided into two main phases, the first portion of the investigation consisted of large-scale (LS) laboratory experimentation, which was conducted through the use of a 7 ft. x 10 ft. experimental concrete bridge deck prototype. The second phase of the research focused on monitoring a newly constructed bridge deck located in Peoria, Illinois. The research involved both the experimental and field investigation in order to provide a better understanding of how strain changes under real service conditions and to compare and contrast the measured strain within the large-scale experimental deck. Both the large-scale experimental and the newly constructed bridge decks were poured with Type-K cement and monitored for a period of six months. The results show that Type-K cement expands during the early age of hydration which produces compressive stresses in the concrete and reduces the onset of cracking in bridge decks. Bridge decks poured with Type-K cement are less prone to crack prematurely and are more durable. Improve durability will results in less frequent deck replacement and maintenance.

Mohammad Rahman

Graduate Student
Saint Louis University

Mr. Mohammad Mahfuzur Rahman is a Ph.D. student in the Department of Civil Engineering at Saint Louis University. He received his Bachelor Degree from Bangladesh University of Professionals,Bangladesh (2012) and Master’s degree from Kookmin University, South Korea (2014).
His research activities are mainly focused on structural engineering. He is doing experimental and finite element modeling to mitigate the shrinkage cracking in concrete bridge decks.

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Ahmed Ibrahim

Assistant Professor,Department of Civil and Environmental Engineering
University of Idaho

Ahmed Ibrahim is an assistant professor in the Department of Civil & Environmental Engineering. He received his doctorate in civil/structural engineering from the University of Missouri–Columbia. His research involves blast resistant design, experimental testing and numerical analysis of structural elements, and the performance and strengthening of reinforced and prestressed concrete bridges. His research has been funded from many state DOTs and presented in several articles published in journals and conference proceedings. Ibrahim is registered as a professional engineer and his experience includes more than 12 years in industry and academia. His industrial experiences are mainly focused in structural analysis and design of buildings and bridges. He is a member of the American Society of Civil Engineers (ASCE) and the American Concrete Institute (ACI).

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Will Lindquist

Assistant Professor
William Jewell College

n/a

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Riyadh Hindi

Associate Dean of Graduate Education & Research, and Professor of Civil Engineering
Saint Louis University

Dr. Hindi is associate dean for graduate education and research and professor of civil engineering at Parks College of Saint Louis University.  He is a registered professional engineer in British Columbia, Canada. He has worked as a structural and bridge engineer in the US and abroad for more than 25 years. Dr. Hindi’s area of expertise includes non-linear behavior, modeling, and damage of reinforced and pre-stressed concrete elements under static, cyclic and seismic loadings, confinement of reinforced concrete bridge columns, low-cycle fatigue of bridge elements and reinforcement, behavior of bridges under vehicular live load. His research includes experimental, analytical and finite element modeling of bridges and structures. He has developed a damage model of R/C concrete bridge columns under seismic loading based on degraded energy. He has co-authored more than 50 refereed publications related to bridges and structures under different types of loads. Dr. Hindi has served as a PI/Co-PI on many research projects sponsored by NSF, Caltrans, IDOT, MODOT, and internally. Dr. Hindi has supervised more than 20 graduate students’ research theses. He is a member of several professional organizations including; ACI, ASCE, SEI, ASEE, IABMAS, and EERI.

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