Qingli Dai

Qingli Dai

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Assistant Professor, Civil and Environmental Engineering

  • PhD, University of Rhode Island

Biography

Dr. Dai’s research focuses on sustainable materials and structures for civil infrastructure applications. Her research focuses on sustainable materials and structures for civil infrastructure applications. Her research integrates computational analysis, experimental testing and sensor techniques to investigate asphalt mixtures, cementitious concrete and composites, geopolymer and polymer composites. Her research has also been involved with other multidisciplinary areas: micromechanics, finite element method, discrete element method, fracture mechanics, molecular dynamic simulation, image-based computation, characterization and sensing for damage mechanism, self-healing materials, alternative and sustainable infrastructure materials, active material actuator design for structure vibration reduction. She has taught class such as matrix structural analysis, finite element analysis and advanced mechanics of materials.

Dr. Dai has been one of the principle investigators of research projects funded by National Science Foundation and State Department of Transportation. Her group has been investigating the performance and behavior of asphalt mixtures, chemo-physical characterization, fracture and self-healing construction materials, Non-destructive ultrasonic and acoustic techniques,  internal damage diagnosis and simulation  in concrete, actuator design and wind-structure interaction for vibration reduction. She has authored and co-authored more than 60 peer reviewed papers including 42 journal articles in ASCE Journal of Engineering Mechanics, ASCE Journal of Materials in Civil Engineering, Mechanics of Materials,  Construction & Building Materials, Materials and Structures, International Journal for Numerical and Analytical Methods in Geomechanics, International Journal of Pavement Engineering, Journal of Transportation Research Board, Journal of Association of Asphalt Paving Technologists, and Canadian Journal of Civil Engineering. She is an associate editor for ASCE Journal of Materials in Civil Engineering. She is a member of ASCE granular material committee, bitumen committee, pavement committee, and geophysics committee.

Links of Interest

Teaching Interests

  • Matrix structural analysis, Finite element analysis, Civil engineering materials and Computational transportation materials

Research Interests

  • Computational analysis for material research: multiscale modeling, finite element analysis, discrete element analysis, multiphysical modeling, fracture simulation and molecular dynamics
  • Properties and performance of asphalt mixtures
  • Cement microstructure and concrete durability
  • Self-healing construction materials, alternative and sustainable infrastructure materials
  • Active-material actuator design, wind-structure interaction, vibration reduction
  • Acoustic and ultrasonic sensing, advanced X-ray and neutron scattering charaterization

Publications

  • Sun, X., Zhang, B., Dai, Q. and Yu, X. (2015) “Investigation of Internal Curing Effects on Microstructure and Permeability of Interface Transition Zones in Cement Mortar with SEM Imaging, Transport Simulation and Hydration Modeling Techniques”, Journal of Construction and Building Materials, Elsevier, Volume 76, Pages 366–379.
  • Yang, X., Dai, Q., You, Z., Wang, Z. “Integrated Experimental-Numerical Approach for Estimating Asphalt Mixture Induction Healing Level through Discrete Element Modeling of a Single-Edge Notched Beam Test”, ASCE's Journal of Materials in Civil Engineering, in press.
  • Lemmens, R. J., Dai, Q., Meng, D.D. (2014), “Side-Groove Influenced Parameters for Determining Fracture Toughness of Self-Healing Composites Using a Tapered Double Cantilever Beam Specimen”, Journal of Theoretical and Applied Fracture Mechanics, Elsevier, Volume 74, December 2014, Pages 23–29
  • Sun, X., Dai, Q. and Ng, K. (2014) “Computational Investigation of Pore Permeability and Connectivity from Transmission X-Ray Microscope Images of a Cement Paste Specimen", Journal of Construction and Building Materials, Elsevier, volume 68, 15, October 2014, pages 240-251.
  • Dai, Q. and Ng, K. (2014). “2D cohesive zone modeling of crack development in cementitious digital samples with microstructure characterization”, Journal of Construction and Building Materials, Elsevier, Volume 54, 15, March 2014, Pages 584–595.
  • Ng, K. and Dai, Q. (2014) “Numerical Investigation of Internal Frost Damage of Digital Cement Paste Samples with Cohesive Zone Modeling and SEM Microstructure Characterization", Journal of Construction and Building Materials, Elsevier, 50(15), 266–275.
  • Dai, Q. and Ng, K. (2014). “Transmission X-Ray Microscope Nanoscale Characterization and 3D Micromechanical Modeling of Internal Frost Damage in Cement Paste.” the Special Issue on: Mechanics of Nanocomposites and Nanostructures, ASCE Journal of Nanomechanics and Micromechanics, 4(1).
  • Dai, Q., Ng, K., Liu, Y., and Yu, X. (2013) "Investigation of Internal Frost Damage in Concrete with Thermodynamic Analysis, Micro-Damage Modeling and Time-Domain Reflectometry Sensor Measurements." Journal of Materials in Civil Engineering, ASCE, 25(9), 1248–1259. doi: 10.1061/(ASCE)MT.1943-5533.0000761.