CLOSE OVERLAY

Kejin Wang

TITLE

PCC Engineer, CP Tech Center

PHONE

515-294-2152

EMAIL

kejinw@iastate.edu

ADDITIONAL ROLES

Distinguished Professor, Department of Civil, Construction and Environmental Engineering

AFFILIATIONS

InTrans, CP Tech Center

About Kejin

Dr. Kejin Wang is a distinguished professor in the Department of Civil, Construction and Environmental Engineering and is closely associated with the National Center of Concrete Pavement Technology at Iowa State University. She does research in many aspects of concrete materials, including cement hydration, microstructure characterization, concrete durability, sustainable concrete materials, and advanced concrete technology.

Education


  • PhD, Civil Engineering, University of California, Berkeley, 1994
  • MS, Civil Engineering, Chinese Academy of Sciences (Beijing, China), 1985
  • BS, Civil Engineering, Hefei University of Technology (Hefei, China), 1982

Certifications


  • Professional Engineer (PE) License, State of Illinois

Selected Publications


Dr. Wang has published 123 peer-reviewed journal papers and 46 other peer-reviewed papers. She has also edited 7 books (2 international conference proceedings and 5 special publications).

  • Lei, B., H. Yu, Y. Guo, H. Zhao, K. Wang, and W. Li. 2022. Mechanical properties of multi-recycled aggregate concrete under combined compression and shear. Engineering Failure Analysis, Vol. 143, Part A.
  • Adil, S., Y. Sadati, P. Ling, K. Taylor, J. Wang, and T. Kevern. 2022. Effect of penetrating sealers on joint performance of poor durability concrete. Materials Journal, Vol. 119, No. 9.
  • Guo, Y., W. Li, W. Dong, Z. Luo, F. Qu, F. Yang, and K. Wang. 2022. Self-sensing performance of cement-based sensor with carbon black and polypropylene fibres under different loading conditions. Journal of Building Engineering, Vol. 59.
  • Wi, K. K. Wang, J. Han, H-S. Lee, and S. Lim. 2022. Effects of nano Palm Oil Fuel Ash on Hydration of Cement under the Accelerated Carbonation Curing. Materials Letters, Vol. 327.
  • Wang, X., Y. Wang, X. Ge, B. Tong+, V. Schaefer, K. Wang, and C. Li. 2022.The quantitative assessment of clogging and cleaning effects on the permeability of pervious concrete. Construction and Building Materials, Vol. 335.
  • Qu, F., W. Li, Y. Guo, S. Zhang, J. L. Zhou, and K. Wang. 2022. Chloride-binding capacity of cement-GGBFS-nanosilica composites under seawater chloride-rich environment. Construction and Building Materials, Vol. 342, Part B.
  • Guo, Y., W. Li. K. Dong, K., Wang, X. He, K. Vessalas, and D. Sheng. 2022. Self-sensing cement-based sensor with superhydrophobic and self-cleaning capacities after silane-based surficial treatment. Case Studies in Construction Materials.
  • Zhao, Y., Z. Hu, K. Tang, K. Wang, Y. Li, and W. Li. 2022. Deterioration of concrete under coupled aggressive actions associated with load, temperature and chemical attacks: A comprehensive review. Construction and Building Materials, Vol. 322.
  • Li, W., Y. Dong, K. Guo, K. Wang, and S. P. Shah. 2022. Advances in multifunctional cementitious composites with conductive carbon nanomaterials for smart infrastructure. Cement and Concrete Composites, Vol. 128.
  • Dong, W., W. Li, K. Wang, S. P. Shah, and D. Sheng. 2022. Multifunctional cementitious composites with integrated self-sensing and self-healing capacities using carbon black and slaked lime. Ceramics International, Vol. 48, No. 14, pp. 19851–19863.
  • Dong, W., W. Li, Y. Guo, F. Qu, K. Wang, and D. Sheng. 2022. Piezoresistive performance of hydrophobic cement-based sensors under moisture and chloride-rich environments. Cement and Concrete Composites, Vol. 126.
  • Guo, Y., W. Li, W, Dong, K. Wang, X. He, K. Vessalas, and D. Sheng. 2022. Self-sensing cement-based sensors with superhydrophobic and self-cleaning capacities after silane-based surficial treatments. Case Studies in Construction Materials.
  • Zhao¢, H., K. Zhou, K. Wang, X. Wu, and S.P. Shah. 2022. Effects of CNT/MgO-type expansive agent on the cracking resistance of face slab concrete of CFRD. Journal of Materials in Civil Engineering, Vol. 34, No. 12.
  • Wang, X., W. Li, Z. Luo, K. Wang, and S. P. Shah. 2022. A critical review on phase change materials (PCM) for sustainable and energy efficient building: Design, characteristic, performance, and application. Energy and Buildings, Vol. 260.
  • Dong, W., W. Li, Y. Guo, K. Wang, D. Sheng. 2022. Mechanical properties and piezoresistive performance of intrinsic cement-based sensors subjected to impact load. Construction and Building Materials, Vol. 327.
  • Garcia¢, D. C. S., K. U. Lima, K. Wang, and R. B. Figueiredo. 2022. Evaluating the effect autoclave curing on the microstructure and compressive strength evaluation of high strength concrete. Revista Materia, Vol. 27, No. 2.
  • Luo, Z., W. Li, K. Wang, S. P. Shah, and D. Sheng. 2022. Nano/micromechanical characterisation and image analysis on the properties and heterogeneity of ITZs in geopolymer concrete. Cement and Concrete Research, Vol. 152.

Professional, Affiliations, Honors, and Awards


  • Fellow, American Concrete Institute (ACI), 2013–present
  • Senior Editor, Journal of Construction and Building Materials
  • Associate Editor, American Society of Civil Engineers (ASCE) Journal of Materials in Civil Engineering
  • Editorial Board Member, ASTM International’s Journal of Advances in Civil Engineering Materials

Completed Research


In-Progress Research


Beth Richards

TITLE

Program Coordinator, SUDAS

PHONE

515-294-2869

EMAIL

brich@iastate.edu

AFFILIATIONS

InTrans, SUDAS

About Beth

Ms. Beth Richards is the program coordinator for the Iowa Statewide Urban Designs and Specifications (SUDAS) Program. She handles the technical editing of the SUDAS manuals, assists with SUDAS-related research, and coordinates/facilitates meetings, communication, and collaboration between board members, committee members, and various SUDAS users. Ms. Richards has nearly 20 years of experience in urban public works activities. Along with the rest of the SUDAS staff, Ms. Richards is working on the development of an Iowa Public Works Service Bureau. In addition, Ms. Richards is an active member in the American Public Works Association and is currently serving on the Iowa Chapter Board as Secretary and Treasurer. 

 

Soumik Sarkar

TITLE

Faculty Affiliate, CTRE

PHONE

515-294-5212

EMAIL

soumiks@iastate.edu

ADDITIONAL ROLES

Professor, Department of Mechanical Engineering

AFFILIATIONS

InTrans, CTRE, REACTOR

About Soumik

Dr. Soumik Sarkar is a professor in the Department of Mechanical Engineering at Iowa State University. He also contributes to various research on transportation projects associated with the Real-Time Analytics of Transportation Data (REACTOR) Laboratory and the Center for Transportation Research and Education. His research specialties include, but are not limited to, the diagnostics, prognostics, and supervisory control of complex cyber-physical systems as well as data mining and visualization, machine learning, and the use of probabilistic graphical models.

Education


  • PhD, Mechanical Engineering, Pennsylvania State University, 2011
  • MS, Mechanical, Massachusetts Pennsylvania State University, 2009
  • MA, Mathematics, Massachusetts Pennsylvania State University, 2009
  • BE, Mechanical Engineering, Jadavpur University, India, 2006

Professional Experience


  • Associate Professor, Department of Mechanical Engineering, Iowa State University, 2019–present
  • Courtesy Appointment, Department of Computer Science, Iowa State University, 2019–present
  • Director, Translational AI Center (TrAC), Iowa State University, 2021–present
  • Chief Innovation Officer and Partner, Etalyc LLC., 2017–present

Selected Publications


Dr. Sarkar has authored or co-authored a total of 247 publications, including 98 peer-reviewed journal papers, 8 book chapters, and 141 peer-reviewed conference papers.

  • Croll, H. C., K. Ikuma, S. K. Ong, and S. Sarkar. 2023. Reinforcement learning applied to wastewater treatment process control optimization: Approaches, challenges, and path forward. Critical Reviews in Environmental Science and Technology.
  • Lu, H., V. P. Nemani, V. Barzegar, C. Allen, C. Hu, S. Laflamme, S. Sarkar, and A. T. Zimmerman. 2023. A physics-informed feature weighting method for bearing fault diagnostics. Mechanical Systems and Signal Processing, Vol. 191.
  • Waite, J. R., S. Y. Tan, H. Saha, S. Sarkar, and A. Sarkar. 2023. Few-shot deep learning for AFM force curve characterization of single-molecule interactions. Patterns, Vol. 4, No. 1.
  • Rairdin, A., F. Fotouhi, J. Zhang, D. S. Mueller, B. Ganapathysubramanian, A. K. Singh, S. Dutta, S. Sarkar, and A. Singh. 2022. Deep learning-based phenotyping for genome wide association studies of sudden death syndrome in soybean. Frontiers in Plant Science, Vol. 13.
  • Balu, S., S. Sarkar, B. Ganapathysubramanian, and A. Krishnamurthy. 2022. Physics-Aware Machine Learning Surrogates for Real-time Manufacturing Digital Twin. Manufacturing Letters, Vol. 34, pp. 71–74.
  • Rade, J., J. Zhang, S. Sarkar, A. Krishnamurthy, J. Ren, and A. Sarkar. 2022. Deep Learning for Live Cell Shape Detection and Automated AFM Navigation. Bioengineering, 9, No. 10, 522pp.
  • Mukherjee, A., A. Joshi, A. Sharma, C. Hegde, and S. Sarkar. 2022. Generative Semantic Domain Adaptation for Perception in Autonomous Driving. Journal of Big Data Analytics in Transportation.
  • Nagasubramanian, K., A. K. Singh, A. Singh, S. Sarkar, and B. Ganapathysubramanian. 2022. Plant Phenotyping with Limited Annotation: Doing More with Less. Plant Phenome Journal.

Professional Affiliations, Honors, and Service


  • Member, American Society of Mechanical Engineers, 2008–present
  • Member, Institute of Electrical and Electronics Engineers, 2008–present
  • Associate Editor, Frontier in Robotics and AI: Sensor Fusion and Machine Perception, 2014–present
  • Editorial Board Member, Journal of Big Data Analytics in Transportation, 2018–present
  • Associate Editor, Plant Phenomics, a Science partner journal, 2018–present
  • Iowa State College of Agriculture and Life Sciences Team Award, 2022
  • Walter W Wilson Faculty Fellow in Engineering, Iowa State University, 2020
  • Iowa State University Early Achievement in Research Award, 2020
  • NSF CAREER Award, National Science Foundation, 2019
  • Iowa State College of Engineering Early Achievement in Research Award, 2019

Jennifer Serra

TITLE

Program Assistant, InTrans

PHONE

515-294-4401

EMAIL

jserra@iastate.edu

AFFILIATIONS

InTrans, MTC

About Jennifer

Ms. Jennifer Serra assists the program coordinator with the review and submittal of proposals and budgets for project grants with the Office of Sponsored Programs. She also initiates subcontract and extension requests and maintains oversight of InTrans K–12 outreach initiatives. Assistance with event planning and coordination are also done as needed.

 

Behrouz Shafei

TITLE

Structural Engineer, BEC

PHONE

515-294-4058

EMAIL

shafei@iastate.edu

ADDITIONAL ROLES

Associate Professor, Department of Civil, Construction and Environmental Engineering

AFFILIATIONS

InTrans, BEC

About Behrouz

Dr. Behrouz Shafei contributes to various research on transportation projects associated with the Bridge Engineering Center. He has a solid background and extensive experience in the design and assessment of bridge structures subjected to natural and manmade hazards, in addition to the development of condition-based strategies for the inspection and maintenance of aging structural components. His research efforts primarily aim to address the issues associated with the performance of structures under continuous deterioration and sudden extreme events, including earthquakes, floods, and hurricanes. He has active research projects sponsored by the Iowa Department of Transportation, Minnesota Department of Transportation, Accelerated Bridge Construction University Transportation Center, and National Science Foundation. He is currently advising master and doctoral students while teaching concrete design at both the undergraduate and graduate levels.

Education


  • PhD, Civil Engineering, University of California, Irvine
  • MS, Structural Engineering, University of Tehran, Iran
  • BS, Civil Engineering, University of Tehran, Iran

Certifications


  • Professional Engineering (PE) License, State of California

Professional Experience


  • Associate Professor (with Tenure), Department of Civil, Construction and Environmental Engineering, Iowa State University, 2020–present
  • Assistant Professor, Department of Civil, Construction and Environmental Engineering, Iowa State University, 2014–2020
  • Assistant Professor, Department of Civil and Environmental Engineering, University of Massachusetts, Amherst, 2012–2014
  • Post-Doctoral Scholar, Department of Civil and Environmental Engineering, University of California, Irvine, 2011–2012
  • Graduate Research Assistant, Department of Civil and Environmental Engineering, University of California, Irvine, 2011–2012

Selected Publications


  • Karim, R., and B. Shafei. 2021. Flexural response characteristics of ultra-high performance concrete made with steel microfibers and macrofibers, Journal of Structural Concrete, Vol. 22, No. 6, pp. 3476–3490.
  • Shi, W., and B. Shafei. 2021. Bond characteristics between conventional concrete and six high-performance patching materials. Journal of Construction and Building Materials, Vol. 308, pp. 1–12.
  • Saini, D., K. Oppong, and B. Shafei. 2021. Investigation of concrete constitutive models for ultra-high performance fiber-reinforced concrete under low-velocity impact. International Journal of Impact Engineering, Vol. 157, pp. 1–15.
  • Khatami, D., S. Hajilar, and B. Shafei. 2021. Investigation of oxygen diffusion and corrosion potential through a cellular automaton framework. Journal of Corrosion Science, Vol. 187, pp. 1–10.
  • Oppong, K., D. Saini, and B. Shafei. 2021. Ultra-high performance concrete for improving impact resistance of bridge superstructures prone to over-height vehicle collision. Journal of Bridge Engineering, Vol. 26, No. 9, pp. 1–18. [Top Downloaded Articles in Structural Engineering].
  • Shurbert-Hetzel, C., B. Shafei, and B. Phares. 2021. Performance of steel dynamic message sign-support structures in extreme wind events. Journal of Engineering Structures, Vol. 237.
  • Oppong, K., D. Saini, and B. Shafei. 2021. Characterization of impact-induced forces and damage to bridge superstructures due to over-height vehicle collision. Journal of Engineering Structures, Vol. 236, pp. 1–13.
  • Shafei, B., M. Kazemian, M. Dopko, and M. Najimi. 2021. State-of-the-art review of capabilities and limitations of polymer and glass fibers used in fiber-reinforced concrete. Journal of Materials, Vol. 14. No. 2, pp. 1–44.
  • Karim, R., and B. Shafei. 2021. Performance of fiber-reinforced concrete link slabs with embedded steel and GFRP rebars. Journal of Engineering Structures, Vol. 229, pp. 1–12.

Professional Affiliations


  • Member of ACI Structural Plain Concrete Committee (Committee 380)
  • Member of ACI UHPC Committee (Committee 239)
  • Member of TRB Committee on Advanced Concrete Materials and Characterization (AKM50)
  • Member of International Association for Bridge Maintenance and Safety (IABMAS)
  • Member of International Association for Life-Cycle Civil Engineering (IALCCE)
  • Member of American Society of Civil Engineers (ASCE)
  • Member of American Concrete Institute (ACI)

Completed Research


In-Progress Research


Inya Nlenanya

TITLE

Research Scientist, CTRE

PHONE

515-294-2373

EMAIL

inya@iastate.edu

ADDITIONAL ROLES

Program Manager, Iowa Pavement Management Program

Adjunct Assistant Professor, Department of Civil, Construction and Environmental Engineering

AFFILIATIONS

InTrans, CTRE

About Inya

Dr. Inya Nlenanya is a research scientist and manager of the Iowa Pavement Management Program at the Institute for Transportation at Iowa State University. Dr. Nlenanya has more than 15 years of experience in transportation engineering, primarily in the integration and utilization of information systems, data analytics, and visualization. His professional experience has focused on conducting research in the areas of safety, asset management, and the integration of risk management in transportation engineering.

 

Education


  • PhD, Civil Engineering, Iowa State University, 2019
  • MS, Agricultural Engineering, Iowa State University, 2005
  • BEng, Electronic Engineering, University of Nigeria, Nsukka, 2002

Professional Experience


  • Research Scientist, Institute for Transportation, Iowa State University, Ames, IA, 2020–present
  • Adjunct Assistant Professor, Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA, 2020–present
  • Transportation Research Specialist/Geographic Information Systems (GIS) Analyst, Center for Transportation Research and Education, Institute for Transportation, Iowa State University, Ames, IA, 2008–2020

Selected Publications


  • Nlenanya, I., and O. Smadi. 2021. Database Design and Integration Framework for Risk Management for State Highway Agencies. Transportation Research Record: Journal of the Transportation Research Board. DOI: 10.1177/03611981211020004.
  • Nlenanya, I., and O. Smadi. 2021. A Risk Management Database Framework Implementation for Transportation Asset Management. CivilEng, Vol. 2, No. 1.
  • Chen, Y. A., H. Ceylan, I. Nlenanya, O. Kaya, O. G. Smadi, P. C. Taylor, S. Kim, K. Gopalakrishnan, and D. E. King. 2020. Long-term performance evaluation of Iowa concrete overlays. International Journal of Pavement Engineering.
  • Nlenanya, I. 2019. “GIS-based risk management database integration and implementation framework for transportation agencies,” Doctoral Dissertation. Iowa State University, Ames IA.
  • Nlenanya, I., and O. Smadi. 2018. Risk Management and Data Needs: A State of the Practice Survey of State Highway Agencies. Transportation Research Record: Journal of the Transportation Research Board.
  • Alhasan, A., I. Nlenanya, O. Smadi, and C. MacKenzie. 2018. Impact of Pavement Surface Condition on Roadway Departure Crash Risk in Iowa. Infrastructures, Vol. 3, No. 2, 14 pp.
  • Bektas, F., O. Smadi, and I. Nlenanya. 2015. Pavement Condition: A new approach for the Iowa DOT. Proc., 94th Transportation Research Board Annual Meeting, Washington, DC, January 11–15.
  • Pyrialakou, V. D., I. Nlenanya, and K. Gkritza. 2014. Passenger Transportation Networks and Urbanization Level: Comparison of Classification Schemes. Proc., 93rd Transportation Research Board Annual Meeting, Washington, DC, January 12–16.
  • Gkritza, K., I. Nlenanya, W. Jiang, R. Sperry, and D. Smith. 2012. Bioeconomy and Transportation Infrastructure Impacts. Green Energy and Technology: Bioenergy and Bioproducts, Springer Verlag Inc.
  • Gkritza, K., I. Nlenanya, W. Jiang, R. Sperry, and D. Smith. 2011. Infrastructure Impacts of Iowa’s Renewable Energy. Transportation Research Record: Journal of the Transportation Research Board, Vol. 2205, pp. 238–246.
  • Nlenanya, I. 2008. Building an Environmental GIS Knowledge Infrastructure for Development in Sub-Saharan Africa in Data Mining Applications for Empowering Knowledge Societies. Hershey PA: IDEA Group Inc.
  • Nlenanya, I. 2005. “Knowledge Discovery Interface for Environmental Science Applications,” Master’s Thesis.

Selected Presentations


  • Alhamdan, A., and I. Nlenanya. 2022. Pavement Condition Forecast for Local Roads Missing Age Information. 11th International Conference on Managing Pavement Assets, Chicago, IL. June 7–10.
  • Tran, L, B. J. Covington, I. Nlenanya, and J. Anthony. 2022. A Success Story of Stakeholder Engagement and Data Unification for Transportation Asset Management. 101st Transportation Research Board Annual Meeting, Washington, DC.
  • Nlenanya, I., and O. Smadi. 2020. Database Design and Integration Framework for Risk Management for State Highway Agencies. Proceedings of the 99th Transportation Research Board Annual Meeting, Washington, DC, January 12–16.
  • Bou-Saab, G., I. Nlenanya, and A. Alhasan. 2019. Correlating Visual–Windshield Inspection Pavement Condition to Distresses from Automated Surveys Using Classification Trees. 12th International Conference on Low-Volume Roads, Kalispell, Montana, September 15–18, 589 pp.

Professional Affiliations and Honors


  • Member, Transportation Research Board AKD30 Low Volume Road Committee
  • Alpha Epsilon, The Honor Society of Agricultural, Food, and Biological Engineering
  • Associate Member, American Society of Civil Engineers

Brent Phares

TITLE

Bridge Research Engineer, BEC

PHONE

515-294-5879

EMAIL

bphares@iastate.edu

ADDITIONAL ROLES

Research Associate Professor, Department of Civil, Construction and Environmental Engineering

AFFILIATIONS

InTrans, BEC

About Brent

Dr. Brent Phares has over 18 years of experience in the field of civil and structural engineering. After his graduation from Iowa State University, he worked as a consultant for the Federal Highway Administration with an assignment at the Turner-Fairbanks Highway Research Center. Two of the many products of his work include (1) an evaluation of NBIS-style bridge inspections and (2) a guideline/specification manual for the ultrasonic inspection of bridge pins. These publications have had a lasting impact on bridge evaluation.

Dr. Phares returned to Iowa State in 2001 as a research engineer and has served in many leadership positions since that time, currently as a bridge research engineer and research associate professor, where he oversees multiple researchers and more than 20 graduate students. Additionally, he collaborates with faculty from across Iowa State University, the United States, and beyond. Dr. Phares is known as an international expert in the use of quantitative data in bridge evaluation. He has also become a national player in the field of accelerated bridge construction through his work with the Iowa Department of Transportation, where he serves as an on-demand consultant. He is known for his ability to integrate outreach into research to meet the needs of the academic community as well as the needs of transportation practitioners and other stakeholders.

Education


  • PhD, Structural Engineering, Iowa State University, 1998
  • MS, Structural Engineering, Iowa State University, 1996
  • BS, Civil Engineering, Iowa State University, 1994

Professional Experience


  • Research Associate Professor, Iowa State University, 2014–present
  • Director, Bridge Engineering Center, Iowa State University, 2011–2018
  • Co-Director, National Center for Wood Transportation Structures, Iowa State University, 2009–2018

Selected Publications


  • Jayathilaka, S. T., B. M. Phares, and Liu. 2022. Implementation of a Mathematical Model for the Prediction of the Future Condition Rating for Bridge Components. Transportation Research Record: Journal of the Transportation Research Board, Vol. 2677, No. 3.
  • Liu, Z., M. Phares, Z. Dietrich, and B. Shafei. 2022. Structural behavior of large anchor bolts used for sign-support structures. Journal of Constructional Steel Research, Vol. 190,
  • Sanderson, T. B., K. S. Freeseman, and Z. Liu. 2022. Concrete bridge deck overlay assessment using ultrasonic tomography. Case Studies in Construction Materials, Vol. 16.
  • Liu,, A. Semendary, and and B. M. Phares. 2022. Numerical Investigation on Early Age Performance of UHPC Shear Keys between Adjacent Prestressed Concrete Box Beams. Advances in Structural Engineering.
  • Shurbert-Hetzel, C., Shafei, and B. Phares. 2021. Performance of steel dynamic message sign-support structures in extreme wind events. Journal of Engineering Structures, Vol. 237, pp. 1–15.

Professional Affiliations, Honors, and Service


  • Member, Steering Committee of the TRB Bridge Data Analysis Working Group
  • Voting member, AREMA Committee on Timber – Committee 7, 2005–present
  • Secretary, Transportation Research Board Committee A2C05(1) – Subcommittee on Nondestructive Evaluation of Structures, 1998–present
  • Team coordinator, Performance Definitions and Measurement, FHWA Virtual Team on Structural Health Monitoring, 2004–present
  • Voting member, Transportation Research Board Committee A2C05 – Committee on Dynamics and Field Testing of Bridges, 1999–2003; Friend of Committee, 1997–1998, 2003–present
  • Voting member, ACI Committee 342, Evaluation of Concrete Bridges and Bridge Elements, 1997–present
  • Secretary, Transportation Research Board Committee A2C01 – Committee on General Structures, 2004–present
  • Voting member, Transportation Research Board Committee A2C01 – Committee on General Structures, 1998–present
  • Associate member, ACI Committee 228, Nondestructive Testing of Concrete, 1998–present
  • Member, American Society of Civil Engineers, 1990–present
  • Friend, Transportation Research Board Committee A2C03 – Committee on Concrete Bridges, 1997–present

Completed Research


In-Progress Research


Sharon Prochnow

TITLE

Program Coordinator, CP Tech Center

PHONE

515-294-3781

EMAIL

prochnow@iastate.edu

AFFILIATIONS

InTrans, CP Tech Center

About Sharon

Ms. Sharon Prochnow manages all proposals submitted by the National Concrete Pavement Technology Center, assists with event planning and coordination, and supports the ongoing activities of the center and its staff.

 

Chris Rehmann

TITLE

Faculty Affiliate, InTrans

PHONE

515-294-1203

EMAIL

rehmann@iastate.edu

ADDITIONAL ROLES

Professor, Department of Civil, Construction and Environmental Engineering

AFFILIATIONS

InTrans

About Chris

Dr. Chris Rehmann is a civil engineer whose research in hydraulics and environmental fluid mechanics includes flooding, stormwater runoff, and groundwater. His projects include experiments and modeling of differential mixing of salinity and temperature, the interaction of turbulence and double diffusion, mixing near bubble plumes, and boundary mixing in lakes. He has also worked on river mixing by assessing acoustic measurements of velocity, turbulence, and discharge and used acoustic measurements to determine dispersion in streams. He has applied his knowledge of mixing and transport in interdisciplinary collaborations involving the fate and transport of zebra mussel larvae, pathogens, and antibiotic resistance genes in rivers. Recent work on contamination caused by flooding involves a strong focus on environmental justice.

Education


  • PhD, Civil Engineering, Stanford University, 1995
  • MS, Civil Engineering, Stanford University, 1990
  • SB, Civil Engineering, Massachusetts Institute of Technology, 1989

Professional Experience


  • Joel A. and Judy Cerwick Professor, Department of Civil, Construction, and Environmental Engineering, Iowa State University, 2021–present
  • Associate Chair, Department of Civil, Construction, and Environmental Engineering, Iowa State University, 2012–present

Selected Publications


  • McEachran, A. R., L. C. Dickey, C. R. Rehmann, T. M. Isenhart, T. A. Groh, M. A. Perez, and C. J. Rutherford, C.J. 2022. Groundwater flow in saturated riparian buffers and implications for nitrate removal. Journal of Environmental Quality.
  • Craig, A. J., C. R. Rehmann, L. M. Alt, L. M. Schulte-Moore, and M. L. Soupir. 2022. Prairie strips reduce fecal indicator bacteria concentrations in simulated runoff, Journal of the American Water Resources Association, Vol. 59, No. 2.
  • Willard, I. P., and C. R. Rehmann. 2022. Interaction between double diffusion and differential diffusion in a stratified turbulent flow, Environmental Fluid Mechanics.
  • Dickey, L. C., A. R. McEachran, C. J. Rutherford, C. R. Rehmann, M. A. Perez, T. A. Groh, and T. M. Isenhart. 2021. Slope stability of streambanks at saturated riparian buffer sites. Journal of Environmental Quality.
  • McEachran, A. R., L. C. Dickey, C. R. Rehmann, T. A. Groh, T. M. Isenhart, M. A. Perez,, and C. J. Rutherford. 2020. Improving the effectiveness of saturated riparian buffers for removing nitrate from subsurface drainage. Journal of Environmental Quality.
  • Maroney, C. L., and C. R. Rehman. 2017. Stream depletion rate for a radial collector well in an unconfined aquifer near a fully penetrating river. Journal of Hydrology, Vol. 547, pp. 732–741.
  • Tesfatsion, L., C. R. Rehmann, D. S. Cardoso, Y. Jie, and W. J. Gutowski. 2017. WACCShed: an agent-based watershed platform. Environmental Modelling and Software, Vol. 89, pp. 40–60.
  • Pandey, P. K., M. L. Soupir, C. Ikenberry, and C. R. Rehmann. 2016. Predicting streambed sediment and water column Escherichia coli levels at watershed scale. Journal of the American Water Resources Association, Vol. 52, pp. 184–197.
  • Schmalle, G. F., and C. R. Rehmann. 2014. Analytical solution of a model of contaminant transport in the advective zone of a river. Journal of Hydraulic Engineering, Vol. 140.
  • Wain, D. J., M. S. Kohn, J. A. Scanlon, and C. R. Rehmann. 2013 Internal wave driven transport of fluid away from the boundary of a lake. Limnology and Oceanography, Vol. 58, pp. 429–442.
  • Pandey, P. K., M. L. Soupir, and C. R. Rehmann. 2012 A model for predicting resuspension of Escherichia coli from streambed sediments. Water Research, Vol. 46, pp. 115–126.

Skylar Knickerbocker

TITLE

Research Scientist, CTRE

PHONE

515-294-2238

EMAIL

sknick@iastate.edu

ADDITIONAL ROLES

Co-Director, REACTOR Laboratory

AFFILIATIONS

InTrans, CTRE, REACTOR

About Skylar

Mr. Skylar Knickerbocker is a researcher and co-director of the Real-Time Analytics in Transportation (REACTOR) Laboratory. He works primarily in the areas of traffic operations, maintenance, and safety, including data analytics, data visualization, and big data management. He assists in the management and support for several research projects for the Iowa Department of Transportation, Minnesota Department of Transportation, Strategic Highway Research Program, and the Federal Highway Administration through collaboration with the Center for Transportation Research and Education.

 

Education


  • MS, Civil Engineering, Iowa State University, 2012 
  • BS, Missouri University of Science and Technology, 2011 

Certifications


  • Professional Engineer (PE) License, State of Iowa (No. 23147)

Professional Experience


  • Research Scientist, Center for Transportation Research and Education, Institute for Transportation, Iowa State University, 2012–present
  • Graduate Research Assistant, Department of Civil, Construction, and Environmental Engineering, Iowa State University, 2011–2012

Selected Publications


  • Knickerbocker, S., A. Sassani, and Z. Hans. 2021. Evaluation of Road Weather Messages on DMS Based on Roadside Pavement Sensors, MN 2021-25. Minnesota Department of Transportation, St. Paul, MN.
  • Knickerbocker, S., S. Bhagat, Z. Hans, and A. Sharma. 2021. Developing an Architecture to Integrate Safety, Mobility and Traffic Data, InTrans Project 18-676. Iowa Department of Transportation, Ames, IA.
  • Knickerbocker, S., V. Ravichandra-Mouli, N. Hawkins, and A. Sharma. 2020. Developing a Research-Grade Iowa Work Zone Database, InTrans Project 18-675. Iowa Department of Transportation, Ames, IA.
  • Venkatachalapathy, A., A. Sharma, S. Knickerbocker, and N. Hawkins. 2020. A Rubric-Driven Evaluation of Open Data Portals and Their Data in Transportation. Journal of Big Data Analytics in Transportation, Vol. 2, No. 2.
  • Huang, T., S. Knickerbocker, A. Sharma, and N. Hawkins. 2018. Implementing Big Data Quality Assurance with Visualization Tools. , Transportation Research Board 97th Annual Meeting Compendium of Papers, Washington, DC, January 7–11.

Professional Affiliations


  • Member, TRB Committee on Traffic Control Devices (ACP55) and Committee on Visualization in Transportation (AED80)
  • Co-Chair of the WZDx Specification Update Subgroup under the Work Zone Data Working Group

Completed Research


In-Progress Research


May, 2021
TOP