Digital Commons Network^™

202210-02, 10/06/2022, I-65 S, Mm 141, Boone Co., Myles W. Overall, Rahul Suryakant Sakhare, Justin Mukai, Jairaj Desai, Deborah Horton, Darcy M. Bullock

After-Action Reports for Traffic Incident Management (TIM)

No abstract provided.

202201-03, 01/16/2022, I-70 E, Mm 104, Hancock Co., Myles W. Overall, Rahul Suryakant Sakhare, Justin Mukai, Jairaj Desai, Deborah Horton, Darcy M. Bullock

After-Action Reports for Traffic Incident Management (TIM)

No abstract provided.

Back Matter

The Writing Center Journal

Back Matter for WCJ 40.2.

Review: Queerly Centered: Lgbtqia Writing Center Directors Navigate The Workplace, Tyler Martinez

The Writing Center Journal

Dr. Travis Webster’s monograph reports on qualitative research conducted into the working lives of 20 LGBTQIA-identifying writing center directors. From those interviews, Webster identifies three features of LGBTQIA writing center administrative labor: the unique capital with which their identities equip them, the activist labor that their identities call them to perform, and tensions between their labor and identities. He calls on writing center professionals and higher education administrators to become accomplices in the struggle against workplace injustices, moving beyond allyship that is all too often based in kind words rather than sustained action. The insights available in this book are …

Examining Business Students’ Workplace Information Use During Internships And Co-Ops, Margaret Phillips, Heather Howard, Garrett Brewster

Libraries Faculty and Staff Creative Materials

Information literacy is essential for business students as they prepare for the workplace they will enter after leaving the university. Prior to graduation, students must also prepare for the information needs they will experience during internships and co-ops. To optimize instruction and teach students the information literacy skills they will need on-the-job, librarians need to understand what information sources employers require students to use during internship/co-op experiences and in what ways. In this study we surveyed business students and alumni at a large Midwestern university who had completed an internship or co-op regarding their information use during these workplace experiences.

Front Matter

The Writing Center Journal

Front matter for Writing Center Journal 40.3.

Integration Of Probe Data Tools Into Tmc Operations, Jijo K. Mathew, Howell Li, Jairaj Desai, Rahul Suryakant Sakhare, Enrique Saldivar-Carranza, Margaret Hunter, Benjamin Scholer, Darcy M. Bullock

JTRP Technical Reports

With the advent of probe data, there is a need to virtualize many of the Traffic Management Center (TMC) tools used for analyzing work zones, severe crashes, winter operations, moving maintenance operations, and providing dashboards characterizing overall system mobility. Traditional tools have evolved over the past several years and it is important to develop training materials and make them more accessible to a broad range of Indiana Department of Transportation (INDOT) users and other stakeholder. Over the past several years, agencies have used probe data, mainly 1-minute aggregated segment-based probe data to assess and manage roadways. This study extended traditional …

Superabsorbent Polymers For Internally Cured Concrete, Caitlin J. Adams, Baishakhi Bose, Ethan Mann, Kendra A. Erk, Ali Behnood, Alberto Castillo, Fabian B. Rodriguez, Yu Wang, Jan Olek

JTRP Technical Reports

Two commercial superabsorbent polymer (SAP) formulations were used to internally cure cement pastes, mortars, and concretes with a range of water-to-cement ratios (w/c 0.35–0.52). The following properties were determined as a function of cement chemistry and type, use of chemical admixtures, use of slag, and batching parameters: SAP absorption capacity, fresh mixture workability and consistency, degree of hydration, volumetric stability, cracking tendency, compressive and flexural strength, and pumpability. SAP internal curing agents resulted in cementitious mixtures with improved hydration, accelerated strength gain, greater volumetric stability, and improved cracking resistance while maintaining sufficient workability to be pumped and placed without sacrificing …

Implementation Study: Continuous, Wireless Data Collection And Monitoring Of The Sagamore Parkway Bridge, Rameez Ali Raja, Mustafa Kilic, Monica Prezzi, Rodrigo Salgado, Fei Han

JTRP Technical Reports

This report presents, in detail, the development and implementation of a wireless solar powered DAQ system for continuous real-time monitoring of the Sagamore Parkway Bridge using the data collected from strain gauges installed in the bridge pier and its foundation piles. The data analysis showed that there is no significant change in the load-settlement response of the bridge pier 3 years after its construction. The pile cap contribution in carrying the total load carried by the bridge pier is significant (about 20%). The hourly ambient temperature trends match with the incremental bending moments measured on the bridge pier and the …

A Strategic Assessment Of Needs And Opportunities For The Wider Adoption Of Electric Vehicles In Indiana, Theodora Konstantinou, Donghui Chen, Konstantinos Flaris, Kyubyung Kang, Dan Daehyun Koo, Jonathon Sinton, Konstantina Gkritza, Samuel Labi

JTRP Technical Reports

The primary objective of this study was to assess the challenges and opportunities associated with the provision of appropriate infrastructure to support electric vehicle (EV) operations and electrification across Indiana. A secondary objective of this study was to develop a strategic plan for INDOT that outlines new business opportunities for developing EV charging stations. To achieve these objectives, the project team assessed current and emerging trends in EV operations, particularly EV charging infrastructure and EV demand forecasting. They also examined opportunities for the strategic deployment of EV charging stations by identifying EV infrastructure deficit areas; investigated the impact of EV …

Road Condition Detection And Classification From Existing Cctv Feed, Stanley Chien, Yaobin Chen, Lauren Christopher, Mei Qiu, Zhengming Ding

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) has approximately 500 digital cameras along highways in populated areas of Indiana. These cameras are used to monitor traffic conditions around the clock, all year round. Currently, the videos from these cameras are observed one-by-one by human operators looking for traffic conditions and incidents. The main objective of this research was to develop an automatic, real-time system to monitor traffic conditions and detect incidents automatically.

The Transportation and Autonomous Systems Institute (TASI) of the Purdue School of Engineering and Technology at Indiana University-Purdue University Indianapolis (IUPUI) and the Traffic Management Center of INDOT developed …

Real Life Experience With Major Pavement Types, Ayesha Shah, Jan Olek, Rebecca S. Mcdaniel

JTRP Technical Reports

Pavement performance is a complex issue which depends on many contributing factors. Examining the performance of real-life pavements across the state determines what the actual service lives are for the pavements. For the purposes of this study, only selected LTPP projects were examined, along with a database containing all the historic repair projects completed in Indiana. Pertinent information present in the Indiana Historic Contracts Database was extracted concerning the types of pavement repair and treatments options commonly employed within the state, the time between repairs, etc. These data were used to determine descriptive statistical parameters and was summarized in graph …

Forecasting Freight Logistic Needs And Indot Plans, Ananth V. Iyer, Thomas Brady, Steven R. Dunlop, Dutt J. Thakkar, Saichandar Naini, Srinath Jayan, Suraj Vasu, Sanjayraj Mohanraj, Janani Srinvasan

JTRP Technical Reports

This project focused on forecasting freight logistics needs and developing and analyzing capacity plans for INDOT to consider. The forecast timeframe ranges from the 2020 to 2045; the commodities considered are those used in the FHWA framework. We considered five SSP (Shared Socio-Economic Pathways) scenarios that are in sync with those used by the IPCC (International Protocol for Climate Change). We also use the IPCC forecasts of world GDP and FHWA forecasts to develop county-level freight forecasts by commodity. A survey of industry participants, primarily in manufacturing, suggests that Indiana industries are tied to the rest of the country and …

Heavy Fleet And Facilities Optimization, Ananth V. Iyer, Samuel Labi, Steven R. Dunlop, Dutt J. Thakkar, Sayak Mishra, Lavanya Krishna Kumar, Runjia Du, Miheeth Gala, Apoorva Banerjee, Gokul Siddharthan

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) is responsible for timely clearance of snow on state-maintained highways in Indiana as part of its wintertime operations. For this and other maintenance purposes, the state’s subdistricts maintain 101 administrative units spread throughout the state. These units are staffed by personnel, including snow truck drivers and house snow removal trucks and other equipment. INDOT indicated a need to carry out value engineering analysis of the replacement timing of the truck fleet. To address these questions, this study carried out analysis to ascertain the appropriate truck replacement age, that is different across each of the …

Environmentally Tuning Asphalt Pavements Using Phase Change Materials, Miguel A. Montoya, Daniela Betancourt-Jiminez, Mohammad Notani, Reyhaneh Rahbar-Rastegar, Jeffrey P. Youngblood, Carlos J. Martinez, John E. Haddock

JTRP Technical Reports

Environmental conditions are considered an important factor influencing asphalt pavement performance. The addition of modifiers, both to the asphalt binder and the asphalt mixture, has attracted considerable attention in potentially alleviating environmentally induced pavement performance issues. Although many solutions have been developed, and some deployed, many asphalt pavements continue to prematurely fail due to environmental loading. The research reported herein investigates the synthetization and characterization of biobased Phase Change Materials (PCMs) and inclusion of Microencapsulated PCM (μPCM) in asphalt binders and mixtures to help reduce environmental damage to asphalt pavements. In general, PCM substances are formulated to absorb and release …

Improved Reliability Of Fwd Test Results And Correlations With Resilient Modulus, Kanika Gupta, Sung Soo Park, Antonio Bobet, Tommy Nantung

JTRP Technical Reports

Resilient modulus (M_R) is a key factor in the Mechanistic Empirical Pavement Design Guide (MEPDG) which was adopted by INDOT in January 2009. The resilient modulus can be determined in new pavement projects from subgrade soil samples collected at the site. However, for a pavement rehabilitation project, it becomes difficult to obtain soil information, and coring for samples may not be feasible because of traffic. The literature is rich with correlations between the M_R of the subgrade obtained in the laboratory with that estimated from FWD tests in the field. However, the review conducted shows very contradictory …

Indot Research Program Benefit Cost Analysis – Return On Investment For Projects Completed In Fy 2021, Bob Mccullouch

JTRP Technical Reports

To demonstrate the value of research and its implementation, the Governor’s Office requested an annual financial analysis of the INDOT Research Program to determine the return on the research investment (ROI). The current financial analysis is for research projects that completed in FY 2021. Analyses on previous year’s projects is necessary primarily due to the time it takes some project outcomes to be implemented, extending into the following year. Therefore, the FY 2021 analysis is completed in calendar 2022. The ROI analysis will supplement the annual IMPACT report by adding a more rigorous quantitative benefit cost analysis (BCA) to the …

Safety And Mobility Analysis Of Rolling Slowdown For Work Zones: Comparison With Full Closure, Abdullah Jalal Nafakh, Franklin Vargas Davila, Yunchang Zhang, John D. Fricker, Dulcy M. Abraham

JTRP Technical Reports

There are times when the traffic lanes through a work zone must be kept clear for activities such as placing overhead beams, erecting overhead signs, and installing power lines, and other temporary roadway work activities. As an alternative to a full road closure, a rolling slowdown can typically provide up to 30 minutes to complete such activities without bringing approaching traffic to a complete halt. Using data from recent rolling slowdowns and full closures carried on the Indiana interstate network and a simulation approach, this study compares rolling slowdowns to full closures from safety and mobility standpoints. The study suggests …

Synthesis Study: Repair And Durability Of Fire-Damaged Prestressed Concrete Bridge Girders, Tzu-Chun Tseng, Amit H. Varma

JTRP Technical Reports

Recent research results from INDOT research project SPR-4221 indicate that the damage to prestressed concrete bridge girders from an intense hydrocarbon fire is limited to concrete material degradation up to a depth of 1 inch from the surface. Additionally, concrete cracking and spalling occur in the fire-damaged region, but the structural strength (flexure and shear) of fire-exposed prestressed concrete bridge girders is not compromised. The findings open the possibility for repairing damaged bridge girders and answers questions regarding the durability of damaged-unrepaired and damaged-repaired girders.

Development Of In-Situ Sensing Method For The Monitoring Of Water-Cement (W/C) Values And The Effectiveness Of Curing Concrete, Rui He, Na (Luna) Lu, Jan Olek

JTRP Technical Reports

As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with liquid membrane-forming compounds. For laboratory study, …

Pack Rust: Mitigation Strategy Effectiveness, Edgar Oscary Soriano Somarriba, Mark D. Bowman

JTRP Technical Reports

As of 2013, the damage caused by corrosion on highway bridges has been estimated to cost approximately 14 billion dollars annually, and this cost has been increasing over the years. Corrosion is one of the natural phenomena that has been slowly deteriorating infrastructure systems across the United States. One of the most problematic types of corrosion is crevice corrosion, which is defined as the formation of rust between overlapping surfaces, such as the case of a splice connection where flanges are attached by splice plates. A significant number of steel bridges in Indiana have developed crevice corrosion in splice connections. …

Steel Bridge Coating Evaluation And Rating Criteria, Mark D. Bowman, Bryan D. Hagan, William D. Hurdle

JTRP Technical Reports

The aim of the study is to gather information on three topics: (1) the evaluation and rating of steel bridge protective coatings, (2) coating systems used by various states throughout the United States, and (3) maintenance painting procedures employed by various state department of transportation agencies (DOTs). First, it was found that most state DOTs use either an Element Level type rating of the coating system or a 9–0 NBI type rating; many state DOTs use both methodologies, with one used for state bridges and the other for local bridges. Second, for coating systems, it was found that there is …

Demonstration Project For Asphalt Performance Engineered Mixture Design Testing, Reyhaneh Rahbar-Rastegar, Gerald Huber, Miguel A. Montoya, Christopher Campbell, John E. Haddock

JTRP Technical Reports

The asphalt industry is moving towards performance-based methods for asphalt mixture design. The Federal Highway Administration (FHWA) is supportive of state departments of transportations (DOT) adopting index and predictive performance tests, especially those making use of the Asphalt Mixture Performance Tester (AMPT). The FHWA is therefore encouraging state DOTs to gain experience with the requirements of the procedures and analysis tools for Balanced Mixture Design (BMD). The main objective of this study is to evaluate fatigue cracking on three INDOT mainline pavement projects that have asphalt mixtures designed by the Superpave 5 mixture design, and to better understand the fundamental …

Design Of Educational Material And Public Awareness Campaigns For Improving Work Zone Driver Safety, Ricardo Chahine, Prince Adu Gyamfi, Nandhesh Subash, Wonsang Cho, Krista O. Kelley, Stacey L. Connaughton, Konstantina Gkritza

JTRP Technical Reports

This project aims to help improve work zone driver safety in Indiana through driver education and public awareness campaigns. The project focused on two specific objectives: (1) to design a public awareness campaign to increase drivers’ knowledge and influence positive attitudes about work zone driver safety practices; and (2) to prepare educational materials to be incorporated into driver’s education or training curriculum prior to taking driving test and getting a driver’s license issued. The campaign was informed by formative research, conducted using a survey to assess public knowledge and attitudes. Based on these results, campaign messages were designed. The team …

Development Of Volumetric Acceptance And Percent Within Limits (Pwl) And Criteria For Stone Metrix Asphalt (Sma) Mixtures In Indiana, Jusang Lee, John E. Haddock, Jongmyung Jeon

JTRP Technical Reports

SMA is to be designed based on SMA volumetric properties in terms of air voids content (Va), voids in the mineral aggregate (VMA), and adequate stone-on-stone contact. For construction quality assurance (QA) purposes, INDOT currently accepts SMAs based on aggregate gradation and asphalt binder content. Thus, there is a discrepancy between SMA design criteria and construction acceptance. To better align design and construction, it is necessary to consider SMA volumetric properties in the use of QA. For HMA mixtures, INDOT has already transitioned from volumetric QA acceptance procedures to PWL. Today, SMA still uses adjustment points not based on robust …

Estimating Strength From Stiffness For Chemically Treated Soils, Pranavkumar Shivakumar, Kanika Gupta, Antonio Bobet, Boonam Shin, Peter J. Becker

JTRP Technical Reports

The central theme of this study is to identify strength-stiffness correlations for chemically treated subgrade soils in Indiana. This was done by conducting Unconfined Compression (UC) Tests and Resilient Modulus Tests for soils collected at three different sites—US-31, SR-37, and I-65. At each site, soil samples were obtained from 11 locations at 30 ft spacing. The soils were treated in the laboratory with cement, using the same proportions used for construction, and cured for 7 and 28 days before testing. Results from the UC tests were compared with the resilient modulus results that were available. No direct correlation was found …

Pile Stability Analysis In Soft Or Loose Soils: Guidance On Foundation Design Assumptions With Respect To Loose Or Soft Soil Effects On Pile Lateral Capacity And Stability, Yao Wang, Jeehee Lim, Rodrigo Salgado, Monica Prezzi, Jeremy Hunter

JTRP Technical Reports

The design of laterally loaded piles is often done in practice using the p-y method with API p-y curves representing the behavior of soil at discretized points along the pile length. To account for pile-soil-pile interaction in pile groups, AASHTO (2020) proposes the use of p-multipliers to modify the p-y curves. In this research, we explored, in depth, the design of lateral loaded piles and pile groups using both the Finite Element (FE) method and the p-y method to determine under what conditions pile stability problems were likely to occur. The analyses considered a wide …

Workzone Lighting And Glare On Nighttime Construction And Maintenance Activities, Abdullah Jalal Nafakh, Franklin Vargas Davila, Yunchang Zhang, Jon D. Fricker, Dulcy M. Abraham

JTRP Technical Reports

Over the last two decades, an increasing number of highway construction and maintenance projects in the United States have been completed at night to avoid or alleviate traffic congestion delays. Working at night entails several advantages, including lower traffic volumes, less impact on local businesses, cooler temperatures for equipment and material, and fewer overall crashes. Although nighttime roadway operations may minimize traffic disruptions, there are several safety concerns about passing motorists and workers in the nighttime work zone. For instance, improper lighting arrangements or excessive lighting levels at the job site could cause harmful levels of glare for the traveling …

Crawfordsville Technical Services Asset Management Workflow Improvement Project, Ted W. Boehm, Jim Handy

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) is divided into six districts, with district offices located in LaPorte, Fort Wayne, Crawfordsville, Greenfield, Vincennes, and Seymour. Each district has a Technical Services Department responsible for (with support from INDOT Central Office staff) managing the INDOT assets within the district and providing technical support to the district (including capital programs, maintenance, construction projects, and others). They also provide input to Statewide Asset Management and Capital Programs. Each Technical Services Department has assigned Asset Owners responsible for management of assets such as roadways/pavement, bridges, large culverts, small culverts, traffic/safety, mobility, and (in the case …

Improving Scaling Resistance Of Pavement Concrete Using Titanium Dioxide (Tio2) And Nanosilica, Dan Huang, Mirian Velay-Lizancos, Jan Olek

JTRP Technical Reports

This project focused on the evaluation of the influence of nanoadditives on the hydration kinetics, mechanical properties, and durability of concretes with and without supplementary cementitious materials (SCMs). The types of nanomaterials used in the course of this study included nano-titanium dioxide (nano-TiO₂) and two forms of nanosilica. A series of experimental tasks, including fabrication, curing, and conditioning of specimens, microstructure analysis, mechanical strength testing, and durability testing were conducted in the laboratory. Based on experimental results, it can be concluded that the addition of nanoparticles can accelerate the early-age hydration process of cementitious pastes, especially those containing …