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Theses/Dissertations from 2016

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A framework for value for money assessment on public private partnership mega-projects, Philip J. Barutha

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The Central Iowa Expo site pavement foundation stabilization and paving project: an investigation into the influence of pavement foundation stiffness on pavement design, construction, and performance, Peter Jacob Becker

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High rate anaerobic digestion of primary and secondary sludge using the static granular bed reactor (SGBR), Tyler J. Biese

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The interrelationships between speed limits, geometry, and driver behavior: a proof-of-concept study utilizing naturalistic driving data, Raha Hamzeie

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Engineering leadership: important themes identified by recruiters of entry-level engineers, Beth Lin Hartmann

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Seismic performance of unbonded post-tensioned precast wall systems subjected to shake table testing, Maryam Nazari

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Design administration in DB projects, Rande Nicole Patterson

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Strength, durability, and application of grouted couplers for integral abutments in accelerated bridge construction projects, Samuel Carey Redd

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Indefinite Delivery/Indefinite Quantity project selection framework using stochastic techniques, Jorge Andres Rueda Benavides

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Ability of an acoustic Doppler current profiler to measure turbulence and mixing, Lauren Elise Schwab

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Rheological and physical characteristics of bio-derived block co-polymers for adhesive applications, Zahra Sotoodeh Nia

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Pilot-scale continuous-flow hydrothermal liquefaction of filamentous fungi cultivated in thin stillage, Andrew R. Suesse

Theses/Dissertations from 2015

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Quantifying road roughness: multiresolution and near real-time analysis, Ahmad Abdulraheem Alhasan

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Assessing the energy and financial viability of heated pavement systems for airports, Pritha Anand

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Performance-based design of reinforced concrete bridge piers subjected to vehicle collisions, Steven Joseph AuYeung

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Assessment of embankment construction QC/QA procedures in Iowa, Chao Chen

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Rheological performance evaluation of asphalt modified with bio-based polymers, Conglin Chen

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Seismic performance of accelerated bridge construction (ABC) precast bulb-tee girder-to-bent cap connection, Zhao Cheng

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A framework for estimating preconstruction service costs at the functional level for highway construction projects, Emily K. Craigie

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Applying artificial neural networks to top-down construction cost estimating of highway projects at the conceptual stage, Brendon Joseph Gardner

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Improving the prediction of time-dependent effects on prestressed concrete bridges, Ebadollah Honarvar Gheitanbaf

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Safety evaluation of roadway segments provided with Safety Edge in Iowa, Amrita Goswamy

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Engineering properties of saturated and biogas desaturated sand, Seth Hansen

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The effects of intersection collision warning systems on gap selection and stopping characteristics, Mitchell Lee Holtzman

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An investigation of freeway standstill distance, headway, and time gap data in heterogeneous traffic in Iowa, Andrew Jeremy Houchin

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Nondestructive field assessment of flexible pavement and foundation layers, Jinhui Hu

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Spatiotemporal visualization of unit prices of major cost items of transportation projects across Iowa using geographic information systems (GIS), Deepanshi Jain

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An investigation of railroad-highway grade crossing consolidation rating in Iowa, Patrick Michael Johnson

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Investigation of AASHTOWare Pavement ME Design/Darwin-ME™ Performance Prediction Models for Iowa Pavement Analysis and Design, Orhan Kaya

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Permeability and lateral earth pressure in granular backfill against bridge abutments, Lance David Keltner

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Live load distribution factors for multi-span girder bridges with plank decking subjected to farm vehicles, Chandra Teja Kilaru

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Confined concrete behavior in hollow columns, Xiao Liang

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2D measurements of turbulence & mixing driven by internal waves impinging on a slope, Zhimin Li

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Advancements in evaluation of air-coupled impact-echo test method, Ji Lu

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Usage of recycled asphalt pavement on Minnesota gravel roads: performance evaluation and analysis, Sunny Suresh Mahajan

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Optimizing the value of soil compaction testing quality assurance and control using stochastic life cycle cost, comparative and statistical analysis, Kevin Wade McLain

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Improvements in non-aseptic methods for fungal cultivation on corn-ethanol thin stillage and continuous hydrothermal liquefaction of fungal biomass feedstock, Jeremiah John McMahon

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Validation of Ndesign in Iowa, Marie Grace Joson Mercado

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Develop a social return on investment framework for Iowa rural bridge transportation asset management, Maria Catalina Miller

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Comprehensive study on the sustainable technology of asphalt rubber for hot mix asphalt binders and mixes, Ka Lai Nieve Ng Puga

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Development of rural curve driving models using lateral placement and prediction of lane departures using the SHRP 2 naturalistic driving data, Nicole Lynn Oneyear

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Laboratory evaluation of freezing-thawing resistance of aggregate for concrete pavement using Iowa Pore Index Tests, Jiaxi Ren

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Guidance on the application of cable median barrier: tradeoffs between crash frequency, crash severity, and agency costs, Brendan James Russo

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Highly scalable bio-inspired soft elastomeric capacitor for structural health monitoring applications, Hussam Suhail Saleem

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Life cycle assessment of heated airfield pavement system for snow removal, Weibin Shen

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Oxidation of 2,4-D using iron activated persulfate and peroxymonosulfate, Guyu Shi

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Effect of beam strength on seismic performance of two-story X-braced frames, Pinar Toru Seker

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Modeling drivers’ naturalistic driving behavior on rural two-lane curves, Bo Wang

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Pavement albedo assessment: methods, aspects, and implication, Shengyang Wang

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Differential diffusion and salt finger fluxes in a stratified turbulent laboratory system, Ian Paul Willard

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Mitigation of liquefaction hazards using the combined biodesaturation and bioclogging method, Shifan Wu

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Performance of bio-based soil stabilizers in transportation earthworks-laboratory investigations, Bo Yang

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Development of holding strategies for deteriorated low-volume roads and evaluation of performance of Iowa test sections, Jianhua Yu

Theses/Dissertations from 2014

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Conceptual level life-cycle cost analysis algorithm for low volume bridges, Rinita Anand

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Seismic behavior of hollow concrete columns, Ryan Beck

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Evaluation of systemic safety methodologies on low-volume rural paved roadways, Georges Elias Bou Saab

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Investigation of sustainable pavement technologies evaluating warm mix asphalt using recycled asphalt materials, Ashley Faye Buss

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A study of effects of a new agricultural-based deicer on the properties of pavement concrete, Jianing Cao

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Development and evaluation of asphalt technologies utilizing renewable resources and innovative pavement systems, Andrew Aaron Cascione

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Evaluation of Iowa asphalt pavement joint cracking, Can Chen

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Methods for removing concrete decks from steel girder bridges, Hongtao Dang

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Dynamic soil-pile interaction by random vibration methods, Mohammad Fotouhi

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Investigation of soil stabilization using biopolymers, Liuhui Guo

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Analysis of Risky and Aggressive Driving Behaviors among Adult Iowans, Yundi Huang

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Estimating preconstruction services costs for highway projects, Kate Hunter

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Investigation of negative moment reinforcing steel in pre-cast pre-stressed concrete beam bridge decks, Sameera Tharanga Jayathilaka

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Dynamic decay of motion of rocking concrete members, Dimitrios Kalliontzis

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Bio-based soft elastomeric capacitor for structural health monitoring applications, Sari Kharroub

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Advancements in active surface wave methods: modeling, testing, and inversion, Shibin Lin

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Evaluation of the need for longitudinal median joints in bridge decks on dual structures, Zhengyu Liu

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Nitrogen removal by combined nitritation-anammox process in an upflow anaerobic sludge blanket (UASB) reactor, Xiaojin Li

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Modeling spacing factor requirements and measuring water permeability in hydrated Portland cement paste, Xinyao Li

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Mitigation of sand liquefaction using in situ production of biogas with biosealing, Yishan Li

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Behavior of dowels in concrete pavements, Eric Andrew Lorenz

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Improving predictions of instantaneous camber for prestressed concrete bridge girders, James Nervig

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Major equipment life cycle cost analysis, Edward Patrick O'Connor

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Two integral girder connections for precast concrete bridges in seismic regions utilizing extended prestressing strands, Robert Peggar

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Investigation of bio-derived material and chemical technologies as sustainable warm mix asphalt additives, Joseph Herbert Podolsky

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The Economic Justification of Semi-Active Damping Systems for Civil Structures, Steven Pritchett

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Local calibration of the MEPDG prediction models for pavement rehabilitation and evaluation of top-down cracking for Oregon Roadways, Md Shaidur Rahman

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Fungal oil with EPA in Mucor circinelloides cultivated on thin stillage from corn-to-ethanol production, Shashank Ravi

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Primary Factors Affecting Growth of Microalgae Optimal Light Exposure Duration and Frequency, Tingting Ren

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Bayesian analysis of factors affecting crash frequency and severity during winter seasons in Iowa, Mohammad Saad Bin Shaheed

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Strain decomposition for the soft elastomeric capacitors (SECs) network and investigation of sensor placement's effect on estimating accuracy, Chunhui Song

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Evaluate the fracture and fatigue resistances of hot mix asphalt containing high percentage reclaimed asphalt pavement (RAP) materials at low and intermediate temperatures, Sheng Tang

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A study of effectiveness of ground improvement for liquefaction mitigation, Bin Tong

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Integral precast girder-to-cap connections for accelerated bridge construction in seismic regions, Justin R. Vander Werff

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Evaluation of de-icer deterioration of concrete, Xin Wang

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Proportioning and performance evaluation of self-consolidating concrete, Xuhao Wang

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Highway Infrastructure Data and Information Integration & Assessment Framework: A Data-Driven Decision-Making Approach, Asregedew Kassa Woldesenbet

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Development of an algorithm of bidirectional surface strain measurements from soft elastomeric capacitors, Jingzhe Wu

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Health monitoring of pavement systems using smart sensing technologies, Shuo Yang

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Sustainable wastewater systems: Impact of operational strategies and carbon sources on poly-hydroxybutyrate (PHB) accumulation and nutrient removal in sequencing batch reactor, Miao Yu

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Investigation of an alternative gravel roads rejuvenation method, Ziliang Zhang

Theses/Dissertations from 2013

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Complex transportation project management: An in-depth look at process integration, alternative financing, and sustainability, Elika Bahrevar

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Validation of cylindrical pavement specimen thermal conductivity protocol, Haotian Bai

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Interaction effects of prevailing weather conditions and crash characteristics on crash severity: A case study on two corridors in Iowa, Dimitrios Vasilios Bilionis

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A study of single and multiple vehicle crashes involving heavy trucks in Iowa, Donald Mathew Cerwick

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Improved processes for selection and design of lightly surfaced roads, Francis Ojaale Dayamba

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Impact of additional carbon on poly-hydroxybutyrates (PHB) accumulation and nutrient removal in a sustainable anaerobic/anoxic/oxic (A2O) membrane bioreactor, TAO FEI