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Department Events

Events

  • Feb
    1

    SPREE Seminar Series - Ramez Hajj

    McCormick - Civil and Environmental Engineering (CEE)

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    Multiscale characterization of viscoelastic construction materials using microscopic experiments and machine learning

    Viscoelastic materials are used widely in construction of built infrastructure, most notably in the case of asphalt binders used in road construction. The characterization of these materials presents substantial challenges due to their complex molecular makeup and time, temperature, and geometry-dependent failure mechanisms. Specifically, understanding the mechanism underlying failure due to fatigue and fracture has been a challenge. Meanwhile, at larger scales, the engineering of asphalt mixtures involves complex manipulation of volumetric and other variables. To address these challenges, a Bayesian Neural Network (BNN) was established to predict the dynamic complex modulus of asphalt mixtures based on a range of data from existing literature and our laboratory. The BNN was shown to have comparable errors to those observed experimentally when enough training and validation datasets were used. However, nonlinear viscoelastic problems provide more substantial challenges due to both lack of data and repeatability. Microscopic observations of the cavitation phenomenon underlying asphalt binder fracture were therefore observed using in-situ testing and darkfield microscopy. Future work involves predicting these cavitation events using physicsinformed neural networks.

    Bio

    Ramez Hajj is an Assistant Professor in the department of Civil and Environmental Engineering at the University of Illinois at Urbana-Champaign. Prior to joining UIUC, he completed his Ph.D. and Master's in Civil Engineering at the University of Texas at Austin. He obtained his Bachelor's Degree in Civil Engineering with a minor in Engineering Science and Mechanics from Virginia Tech. Dr. Hajj's research spans everything related to asphalt materials and flexible pavements, from as small as investigating asphalt binder behavior at the molecular, nano-, and micro-scale, to developing novel materials for roadway pavement and railroad track applications, to solving network-level transportation infrastructure problems. Primarily, his research focuses on asphalt binders, mixtures, and pavements, but more broadly, these research areas are situated in wider research areas of viscoelasticity, composites, machine learning, and computational modeling. So far, his work includes fundamental scientific discoveries into the origins of cracking in asphalt binder microstructure, the development of predictive machine learning algorithms for linear viscoelastic properties, and practical contributions to the asphalt industry, state Departments of Transportation, and local transportation agencies. To date, he has authored more than 25 peer-reviewed journal articles in these areas and presented his work at many international conferences.

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    TIME Wednesday, February 1, 2023 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Stephanie Lukas    stephanie.lukas@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering (CEE)

  • Aug
    14

    Undergraduate Quantum Summer School

    McCormick School of Engineering and Applied Science

    All Day Ford Motor Company Engineering Design Center

    EVENT DETAILSmore info

    TIME Wednesday, August 14, 2024

    LOCATION Ford Motor Company Engineering Design Center    map it

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    CONTACT Dongyang Li    lidongyang@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Aug
    15

    Undergraduate Quantum Summer School

    McCormick School of Engineering and Applied Science

    All Day Ford Motor Company Engineering Design Center

    EVENT DETAILSmore info

    TIME Thursday, August 15, 2024

    LOCATION Ford Motor Company Engineering Design Center    map it

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    CONTACT Dongyang Li    lidongyang@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Sep
    18

    CEE Faculty Retreat

    McCormick - Civil and Environmental Engineering (CEE)

    10:00 AM 1702 Chicago Ave

    EVENT DETAILS

    TIME Wednesday, September 18, 2024 at 10:00 AM - 4:00 PM

    LOCATION 1702 Chicago Ave   

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    CONTACT Andrew Liguori    andrew.liguori@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering (CEE)

  • Sep
    18

    CEE Department BBQ & Poster Session

    McCormick - Civil and Environmental Engineering (CEE)

    4:00 PM 225 Greenwood St

    EVENT DETAILS

    TIME Wednesday, September 18, 2024 at 4:00 PM - 6:00 PM

    LOCATION 225 Greenwood St   

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    CONTACT Andrew Liguori    andrew.liguori@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering (CEE)

  • Sep
    20

    CEE New Student Orientation

    McCormick - Civil and Environmental Engineering (CEE)

    8:00 AM A230, Technological Institute

    EVENT DETAILS

    TIME Friday, September 20, 2024 at 8:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Andrew Liguori    andrew.liguori@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering (CEE)

  • Sep
    24

    Fall 2024 Classes Begin (No Northwestern Monday in Fall)

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Tuesday, September 24, 2024

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Sep
    30

    Last day to add a class or change a section for Fall (Last day for tuition adjustment related to enrollment changes (to or from full-time). No reductions are made to bills for dropped or swapped classes after this date)

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Monday, September 30, 2024

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Oct
    19

    CEE Fall Career Fair

    McCormick - Civil and Environmental Engineering (CEE)

    10:00 AM Louis Room, Norris University Center

    EVENT DETAILS

    TIME Saturday, October 19, 2024 at 10:00 AM - 1:00 PM

    LOCATION Louis Room, Norris University Center    map it

    ADD TO CALENDAR

    CONTACT Andrew Liguori    andrew.liguori@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering (CEE)