May 9 Lehigh Seminar Series: AFRP Reinforced Concrete Bridge Decks and Columns

[announce at designsafe-ci.org]

NHERI LEHIGH SEMINAR SERIES
MAY  9, NOON - 1PM EST

*AFRP Reinforced Concrete Bridge Decks and Columns with Replaceable
Structural Fuses as Energy Dissipaters under Cyclic Loading*
*Monique Head, PhD*
*Associate Professor, Morgan State University*

Register on the DesignSafe website:
https://www.designsafe-ci.org/learning-center/training/workshops/lehigh-ef/2018/afrp-reinforced-concrete-bridge-decks-and-columns/

Seminar details:

Corrosion deterioration and structural degradation of aging bridges are a
major infrastructure challenge. Concrete bridge deck panels reinforced and
prestressed with aramid fiber reinforced polymers (AFRPs) show promise for
enhanced durability given their inherent corrosion-resistance and tensile
properties compared to conventional steel rebar. The precast panels are
reinforced and prestressed in the parallel and perpendicular to the traffic
directions, respectively, and supported by reinforced concrete beams.
Results from experimentally testing a 16 ft x 18 ft deck slab are
presented, and overall constructability issues and challenges when using
AFRP bars are also discussed. The experimental results show the average
failure load of the interior spans and overhangs equal to 3.9 and 1.4 times
the maximum AASHTO LRFD (2010) factored wheel load, respectively, where the
deflection serviceability criteria are met and satisfactory deformability
performance is achieved. No local failure at the panel-to- panel seam and
shear composite pockets was observed, which confirms the design efficacy of
the connection details. Studies have been extended to include an analytical
investigation of a bridge column reinforced with AFRP bars and structural
fuses as energy dissipaters to assess its performance under cyclic loading.
The design rationale and performance of these columns, including future
plans for reduced-scale single column testing are presented.

About the speaker:

Since January 2017, Dr. Head has led the School of Engineering at Morgan
State University as the Associate Dean of Research and Graduate Studies,
where she has focused on increasing the funding allocations for engineering
graduate students and increasing research grant submissions. Prior to
joining the faculty at Morgan State University in 2011 from Texas A&M
University as a tenure-track Assistant Professor (2007-2011), Dr. Head has
secured more than $1.5M in grants involving cutting-edge technical research
projects while also creating experiential learning and discovery
opportunities to both undergraduate and graduate students via the research
projects. Her research lab, Green Transportation Infrastructure Center
(GTIC), is focused on addressing our nation's deteriorating transportation
infrastructure through the application of fundamental engineering
principles and use of fiber reinforced polymer (FRP) bars to replace
conventional steel rebar within concrete bridge decks and columns,
especially within seismic zones (i.e. bridge and earthquake engineering).

Dr. Head has published in top-tier journals, and is a member of several
national professional organizations. In 2014, she received the American
Society of Civil Engineers (ASCE), Maryland Section, Outstanding Educator
of the Year Award and the University of Delaware, Department of Civil &
Environmental Engineering, Citation for Outstanding Alumni Achievement. In
addition to her national and international service, she enjoys facilitating
engineering outreach activities for middle and high school students to
stimulate an excitement for science, technology, engineering and
mathematics (STEM). She is passionate about increasing graduation and
retention rates, especially of female engineering students and students
from diverse backgrounds, and is focused on enhancing research and
innovation at Morgan State University. Dr. Monique Hite Head is a native of
Newark, Delaware. She received her bachelor and master of civil engineering
degrees from the University of Delaware in 2000 and 2002, respectively, and
her doctorate in civil (structural) engineering from the Georgia Institute
of Technology in May 2007. Dr. Head is also an Associate Professor in the
Department of Civil Engineering, and conducts large-scale experimental
testing using advanced materials like fiber reinforced polymer (FRP) bars
to develop better design methodologies as part of performance-based seismic
bridge design.
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