Journal Publications

(J18) Gulzar, S., and Underwood, S. (2024). Asphalt binder characterization using waveform-based viscoelastic measures and time-temperature superposition principle under large strains. Construction and Building Materials. https://doi.org/10.1016/j.conbuildmat.2024.137177 (link)

(J17) Xue, L., Gulzar, S., & Castorena, C. (2024). Linear viscoelastic, viscoplastic, and damage characterization of recycled asphalt binders and mixtures containing recycling agents with long-term aging. Mechanics of Time-Dependent Materials. https://doi.org/10.1007/s11043-024-09721-4 (link)

(J16) Gulzar, S., Xue, L.,  Preciado, J.,  Fried, A., Castorena, C., Underwood, B. S., Habbouche, J., & Boz, I. (2024). Phenomenological modeling of aging and rejuvenation on asphalt binder fatigue characteristics. Construction and Building Materials. https://doi.org/10.1016/j.conbuildmat.2024.135929 (link)

(J15) Preciado, J., Gulzar, S., Fried, A., Castorena, C., Underwood, B. S., Habbouche, J., & Boz, I. (2024). Low-Temperature Performance Evaluation of Recycled Binder Blends for Assessing Recycling Agents’ for Acceptance. ASCE Journal of Materials in Civil Engineering. https://doi.org/10.1061/JMCEE7.MTENG-17661 (link)

(J14) Fried, A., Boz, I., Preciado, J., Gulzar, S., Underwood, B. S., Castorena, C., & Habbouche, J. (2024). Evaluation of Alternative Approaches to Restore the Rheology of Recycled Asphalt Binder Blends. Transportation Research Record. https://doi.org/10.1177/03611981241235179 (link)

(J13) Preciado, J., Gulzar, S., Castorena, C., Underwood, B. S., Habbouche, J., & Boz, I. (2024). Performance Assessment of High Reclaimed Asphalt Pavement Asphalt Mixtures with Recycling Agents. Transportation Research Record. https://doi.org/10.1177/03611981241236483 (link)

(J12) Preciado, J., Gulzar, S., Fried, A., Castorena, C., Underwood, B. S., Habbouche, J., & Boz, I. (2023). Benchmarking Recycled Binder Blends Using Statistical Analysis: A Case Study of Virginia and North Carolina. Transportation Research Record, 0(0). https://doi.org/10.1177/03611981231178812 (link)

(J11) Gulzar, S., Castorena, C., and Underwood, B. S.(2023). An investigation into the nonlinear rheological behavior of modified asphalt binders using large amplitude oscillatory shear rheology. International Journal of Pavement Engineering. DOI: 10.1080/10298436.2023.2211211 (link)

(J10) Gulzar, S., Fried, A., & Preciado, J., Castorena, C., Underwood, B. S., Habbouche, J., and Boz, I. (2023). Towards sustainable roads: A state-of-the-art review on the use of recycling agents in recycled asphalt mixtures. Journal of Cleaner Production. https://doi.org/10.1016/j.jclepro.2023.136994 (link)

(J9) Matini, N., Gulzar, S., B. S. Underwood and Castorena, C. (2022).Evaluation of Structural Performance of Pavements under Extreme Events: Flooding and Heatwave Case Studies, Transportation Research Record. doi: 10.1177/03611981221077984. (link)

(J8) Fried, A., Xue, L.G., Gulzar, S., Preciado, J., Underwood, B.S. and Castorena, C., (2022). Evaluation of Recycling Agent and Extender Dosage Selection Procedures to Restore the High-Temperature Climatic Performance Grade. Transportation Research Record, p.03611981221074361. (link)

(J7) Habbouche, J., Boz, I., Underwood, B. S., Castorena, C., Gulzar, S., Fried, A., & Preciado, J. (2021). Review From Multiple Perspectives for the State of the Practice on the Use of Recycled Asphalt Materials and Recycling Agents in Asphalt Concrete Surface Mixtures. Transportation Research Record. https://doi.org/10.1177/03611981211061130 (link)

(J6) Gulzar, S., Goenaga, B., and B. S. Underwood (2021). Novel Index for Vulnerability Assessment of Flexible Pavement Infrastructure to Temperature Rise: A Case Study of Developing Countries. Journal of Infrastructure Systems. DOI: 10.1061/(ASCE)IS.1943-555X.0000669 (link)

(J5) Daryaee,D., Habibpour, M., Gulzar, S., & Shane Underwood, B. (2020). Combined effect of waste polymer and rejuvenator on performance properties of reclaimed asphalt binder. Construction and Building Materials. (link)

(J4) Gulzar, S., Richard Kim, Y., Castorena, C., & Shane Underwood, B. (2020). COVID-19, Uncertainty, and the Need for Resilience-Based Thinking in Pavement Engineering. Journal of Transportation Engineering, Part B: Pavements, 147(1), 02520001. (link)

(J3) Ding, J., Wang, Y. D., Gulzar, S., Kim, Y. R., & Underwood, B. S. (2020). Uncertainty Quantification of Simplified Viscoelastic Continuum Damage Fatigue Model using the Bayesian Inference-Based Markov Chain Monte Carlo Method. Transportation Research Record, 0361198120910149. (link)

(J2) Gulzar, S., & Underwood, B. S. (2020). Nonlinear Viscoelastic Response of Crumb Rubber Modified Asphalt Binder Under Large Strains. Transportation Research Record, 0361198120907097. (link)

(J1) Vajjarapu, H., Verma, A., & Gulzar, S. (2019). Adaptation Policy Framework for Climate Change Impacts on Transportation Sector in Developing Countries. Transportation in Developing Economies, 5(1), 3. (link)

 

Book Chapters

(B3) Gulzar, S., Castorena, C. and Underwood, S., (2021). A Nexus of Tribology and Rheology to Study Thin-Film Mechanics of Asphalt–Aggregate Interaction during Mixing and Compaction. In Tribology and Sustainability (pp. 213-230). CRC Press. (link)

(B2) Gulzar, S. and Ali, H., (2021). Pavement Infrastructure Asset Management Using Clustering-Based Ant Colony Optimization. Evolutionary Data Clustering: Algorithms and Applications, p.215. (link)

(B1) Gulzar, S., & Underwood, S. (2019). Use of Polymer Nanocomposites in Asphalt Binder Modification. Advanced Functional Textiles and Polymers: Fabrication, Processing and Applications, 405. (link)

 

Conference Proceedings

(C3) Gulzar, S. and B. S. Underwood (2020). “Stress decomposition of nonlinear response of modified asphalt binder under large strains,” Advances in Materials and Pavement Performance Prediction, San Antonia, Texas, August 2020. (link)

(C2) Gulzar, S. and B. S. Underwood (2020). “Fourier transform rheology of asphalt binders,” Advances in Materials and Pavement Performance Prediction, San Antonia, Texas, August 2020. (link)

(C1) Gulzar, S. and B. S. Underwood (2020). “Large amplitude oscillatory shear of modified asphalt binder,” Advances in Materials and Pavement Performance Prediction, San Antonia, Texas, August 2020. (link)

 

Conference Presentations

2025 (accepted)

  • Gulzar, S., Preciado, J., Fried, A., Castorena, C., Underwood, B. S., Habbouche, J., & Boz, I., (2025) “Cross-scale aging dynamics of recycled asphalt binder blends and mixtures containing recycling agents”, 104th Annual Meeting of the Transportation Research Board, Washington D.C., January 2025
  • Turbay, E., Gulzar, S., Castorena, C., Underwood, B. S., Habbouche, J., Boz, I., & Kuhiishi, K. (2025) “Assessment of the aging sensitivity of high reclaimed asphalt pavement asphalt mixtures with recycling agents”, 104th Annual Meeting of the Transportation Research Board, Washington D.C., January 2025
  • Villafranca, C., Gulzar, S., Islam, M. (2025), “Quantifying uncertainty in dynamic modulus for asphalt pavement design: a Colorado case study”, ASCE International Airfield and Highway Pavements Conference, Glendale, Arizona, USA
  • Gulzar, S., Islam, M. (2025), “Enhancing dynamic modulus predictions of asphalt mixtures using scientific machine learning”, ASCE International Airfield and Highway Pavements Conference, Glendale, Arizona, USA
  • Evdokimoff, M., Gulzar, S., Islam, M. (2025), “Modeling post-wildfire debris flow transportation infrastructure risk in Colorado”, ASCE International Conference on Transportation and Development, Glendale, Arizona, USA

2024

  • Villafranca, C., Gulzar, S., Islam, M. (2024), “Viscoelastic modeling and uncertainty analysis of asphalt mixtures in Colorado”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Evdokimoff, M., Gulzar, S., Islam, M. (2024), “Post-wildfire debris flow infrastructure risk modeling in Colorado”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Ali, H., Gulzar, S., (2024), “Automated Planning and Scheduling using LLMs: Case Study of US Railways”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Sharma, M., Gulzar, S., Duong, T., Islam, M., Faisal, H. (2024), “Framework for evaluating wildlife responses to highway infrastructure”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Sharma, M., Duong, T., Gulzar, S., Islam, M. (2024), “Wildlife detection and classification from trail cam video using deep learning”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Grossman, H., Islam, M., Faisal, H., Gulzar, S., Sidorova, E. (2024), “Monitoring and reducing seat belt violations and distracted driving with countermeasures”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Oyewumi, C., Sidorova, E., Islam, M., Gulzar, S. (2024), “Root cause analysis of railway crash in the USA”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Sidorova, E., Gulzar, S., Islam, M. (2024), “Study the factors causing the sound pollution from high-speed railways in urban areas”, Southern Colorado Transportation Conference, Pueblo, Colorado, USA
  • Habbouche, J., Boz, I., Underwood, S., Castorena, C., Gulzar, S., Fried, A., and Preciado, J. (2024). “Engineered Frameworks for Evaluating the Use of Recycling Agents in Surface Asphalt Mixtures for Virginia,” Annual Meeting of the Assoc. of Asphalt Paving Technologists (AAPT), Chicago, IL, September 2024
  • Gulzar, S., Xue, L., Preciado, J., Fried, A., Castorena, C., Underwood, S., Habbouche, J., and Boz, I. (2024). “Understanding the impact of aging and rejuvenation on asphalt binder fatigue characteristics: an LAS-test based performance indices analysis,” 103rd Annual Meeting of the Transportation Research Board, Washington D.C., January 2024
  • Preciado, J., Gulzar, S., Castorena, C., Underwood, S., Habbouche, J., and Boz, I. (2024). “Performance assessment of high RAP asphalt mixtures with recycling agents,” 103rd Annual Meeting of the Transportation Research Board, Washington D.C., January 2024
  • Xue, L., Gulzar, S., and Castorena, C. (2024). “Effect of recycling agents on the long-term aging susceptibility and performance of asphalt binders and mixtures,” 103rd Annual Meeting of the Transportation Research Board, Washington D.C., January 2024
  • Fried, A.,  Boz, I., Preciado, J., Gulzar, S., Underwood, S., Habbouche, J., and Castorena, C. (2024). “Evaluation of alternative approaches to restore the rheology of recycled asphalt binders,” 103rd Annual Meeting of the Transportation Research Board, Washington D.C., January 2024 (AKM20 Binder Committee: Best Paper Award-Runner Up)

2023

  • Gulzar, S., and Underwood, S. (2023). “Use of time-temperature shift factors for waveform-based viscoelastic measures in asphalt binder systems,” ASCE Engineering Mechanics Institute Conference 2023, Atlanta, Georgia, June 6-9, 2023
  • Gulzar, S., Fried, A., Preciado, J., Underwood, S., and Castorena, C. (2023). “Rheological modeling of recycled asphalt binder blends as fluid mixtures,” ASCE Engineering Mechanics Institute Conference 2023, Atlanta, Georgia, June 6-9, 2023
  • Preciado, J., Gulzar, S., Fried, A., Castorena, C., Underwood, S., Habbouche, J., and Boz, I., (2023). “A framework to evaluate recycling agents based on low-temperature rheological performance,” 102nd Annual Meeting of the Transportation Research Board, Washington D.C., January 2023
  • Preciado, J., Gulzar, S., Fried, A., Castorena, C., Underwood, S., Habbouche, J., and Boz, I., (2023). “Benchmarking recycled binder blends using statistical analysis: a case study of Virginia and North Carolina,” 102nd Annual Meeting of the Transportation Research Board, Washington D.C., January 2023

2022

  • Matini, N., Gulzar, S., B. S. Underwood and Castorena, C. (2022). “Evaluation of Structural Performance of Pavements under Extreme Events: Flooding and Heatwave Case Studies,” 101th Annual Meeting of the Transportation Research Board, Washington D.C., January 2022
  • Fried, A., Xue, L., Gulzar, S., Preciado, J., Underwood, B.S., and Castorena, C. (2022). “Evaluation of Recycling Agent and Extender Dosage Selection Procedures to Restore the High-temperature Climatic Performance Grade,” 101th Annual Meeting of the Transportation Research Board, Washington D.C., January 2022
  • Habbouche, J., Boz, I., Underwood, S., Castorena, C., Gulzar, S., Fried, A., and Preciado, J. (2022). “State of the Practice on the Use of Recycling Agents in Asphalt Mixtures: Internet Surveys, Best Practices, and Lessons Learned from Multiple Perspectives,” 101th Annual Meeting of the Transportation Research Board, Washington D.C., January 2022

2021

  • Habbouche, J., Boz, I., Underwood, S., Castorena, C., Gulzar, S., Fried, A., and Preciado, J. (2021). “State of the Practice on the Use of Recycling Agents in Asphalt Mixtures: Internet Surveys, Best Practices, and Lessons Learned from Multiple Perspectives,”  Annual Meeting of the Assoc. of Asphalt Paving Technologists (AAPT), Nashville, TN, September 2021
  • Gulzar, S. and B. S. Underwood (2021). “Asphalt binder characterization using waveform-based viscoelastic measures,” 100th Annual Meeting of the Transportation Research Board, Washington D.C., January 2021
  • Goenaga, B., Gulzar, S., and B. S. Underwood (2021). “Development of a climate change vulnerability index for pavement infrastructure: a case study of developing countries,” 100th Annual Meeting of the Transportation Research Board, Washington D.C., January 2021

2020

  • Gulzar, S. and B. S. Underwood (2020). “Stress decomposition of nonlinear response of modified asphalt binder under large strains,” Advances in Materials and Pavement Performance Prediction, San Antonia, Texas, August 2020
  • Gulzar, S. and B. S. Underwood (2020). “Fourier transform rheology of asphalt binders,” Advances in Materials and Pavement Performance Prediction, San Antonia, Texas, August 2020
  • Gulzar, S. and B. S. Underwood (2020). “Large amplitude oscillatory shear of modified asphalt binder,” Advances in Materials and Pavement Performance Prediction, San Antonia, Texas, August 2020
  • Gulzar, S. and B. S. Underwood (2020). “Nonlinear viscoelastic response of crumb rubber modified asphalt binder under large strains,” 99th Annual Meeting of the Transportation Research Board, Washington D.C., January 2020
  • Ding, J., Wang, Y., Gulzar, S., Kim, Y.R., B. S. Underwood (2020). “Uncertainty quantification of simplified viscoelastic continuum damage fatigue model using bayesian inference based markov chain monte carlo method,” 99th Annual Meeting of the Transportation Research Board, Washington D.C., January 2020
  • Matini, N., Gulzar, S., Goenaga, B., Fried, A.,B. S. Underwood, Castorena, C (2020). “Structural performance of pavements under extreme events: towards a resilient pavement,” 99th Annual Meeting of the Transportation Research Board, Washington D.C., January 2020

2019

  • Matini, N., Gulzar, S., Goenaga, B., Fried, A.,B. S. Underwood, Castorena, C (2020). “Climate change and the challenges of creating a more adaptive and flexible pavement engineering paradigm,” Transportation Resilience 2019: 2nd International Conference on Transportation System Resilience to Natural Hazards and Extreme Weather Events, Washington D.C., November 2019
  • Gulzar, S. and B. S. Underwood (2019). “Nonlinear Rheological Behavior of Asphalt Binders,” 91st Annual Meeting of The Society of Rheology, Raleigh, NC, October 2019

2018

  • Gulzar, S. and B. S. Underwood (2018). “Pavement infrastructure adaptability in an uncertain future: a case study of North Carolina,” Annual Meeting of North Carolina Section Institute of Transportation Engineers, Raleigh, NC, November 2018