Here is a potential Training opportunity for you:
Presenter
Jenny Liu,
PhD, P.E.
Professor,
Department of Civil and Environmental Engineering, University of Alaska
Fairbanks
Wednesday, September 7th,
2016
10:00-11:00 AM Alaska Time
1.0 PDH will be awarded to
individual attendees
Abstract
Paving
interlayers have been used in asphalt concrete (AC) overlays for a variety of
benefits. In cold regions such as Alaska and other northern states, pavements
are more prone to distresses due to extreme climatic conditions. This webinar
presents a study which has been conducted to explore how paving interlayers
function in AC pavements in Alaska through laboratory investigation, pavement
structural analysis, finite element method (FEM) analysis, and surveys from
field test sections with three types of paving interlayers. The multi-axial
interlayer provided the best overall laboratory performance in terms of
stiffness, permeability, and resistance to cracking. The pavement structural
analyses confirmed that using interlayer could improve fatigue crack resistance
and extend service life. The FEM analysis indicated that the multi-axial
interlayer could improve stress distribution more effectively than the two-yarn
bi-axial interlayer. Preliminary results from field evaluation of test sections
showed that pavement performance was improved if reinforced by interlayers, in
terms of reduced amount and severity of cracking. Further monitoring of field
test sections are recommended to give clearer projection of the utility of the
paving interlayers in cold regions.
Presenter’s Bio
Dr. Jenny Liu is a professor in the Department of Civil and
Environmental Engineering at the University of Alaska Fairbanks. She received
her M.S. and Ph.D. degrees in Civil Engineering from Texas A&M University,
and her B.S. degree in Materials Science and Engineering from Tongji
University, Shanghai, China. Over the last ten years she has secured over 10
million dollars of research funding to support her research in infrastructure
materials and pavement engineering. She is the Director of CESTiCC, and
currently serving as an Associate Editor for ASCE Journal of Materials in Civil
Engineering, Chair of ASCE Bituminous Materials Committee, Director of ACI
Alaska Chapter, and members of TRB committees of AFP70, AFK30, and AFK50, and
ASCE committees of Highway Pavement and Geo-Institute Pavements. She is a
registered Professional Engineer in Alaska and certified examiner for ACI
Certifications of aggregate and concrete testing technicians. Her dedication to
education and research, and commitment to professional communities have been
recognized by many awards including UAF Dennis Demmert Award, Best Paper Award
(twice), ASCE Outstanding Reviewer (twice), ASPE Fairbanks Chapter’s 2016
Engineer of the Year Award, and IACIP Outstanding Service Award.
