Engineering Commons^™

Strategic Planning For Activation And Operation Of The North Central Superpave Center (Ncsc): Interim Report, Jan Olek, Rebecca Mcdaniel

JTRP Technical Reports

The North Central Superpave Center (NCSC) was established to serve the needs of the states and industry in ten states and two Canadian provinces as they implement the Superpave system. Accomplishing this goal requires the cooperation and active support of a number of people and organizations. Organizational and operational issues related to infrastructure, personnel, equipment and finances also needed to be resolved. This project was designed to address those issues, develop a comprehensive strategic plan and initiate a number of activities of the North Central Superpave Center (NCSC).

This report summarizes the efforts in the following areas:

1 . Personnel …

Guide To Revenue Calculations: Local Option Highway User Tax 1997, Jon D. Fricker

Indiana Local Technical Assistance Program (LTAP) Publications

This guide is provided to explain the output generated by the computer programs, and to suggest ways in which the results can be adapted to specific LOHUT proposals before a County Council. HERPICC neither endorses nor opposes passage of a LOHUT. The revenue projections it provides are intended to be an aid to well-informed decision-making on the part of a county’s citizens and its County Council.

A Summary Of Highway Revenues, Expenses, And Distributions: 1987 Through 1996, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This report shows the history of receipts, expenses and distributions of revenues that provide funding to all local governments for highway, road and street work.

Modeling Driver's Route Choice Behavior Under The Influence Of Advanced Traveler Information Systems (Vol. 2; Vol. 1: 96/10), Samer Madanat, Nitin K. Jain

JTRP Technical Reports

This research consisted of two parts; this report is volume 2 of 2 volumes; Volume 1 is Report No. FHWA/IN/JHRP-96/10. The first part developed a set of incident clearance time prediction models for the Borman Expressway. The second part consisted of modeling driver’s route choice behavior under the influence of advanced traveler information systems.

Volume 2 of this report describes the modeling driver's route choice behavior under the iinfluence of Advanced Traveler Information Systems. These models can help in understanding the behavior and response of travelers under the influeince of Advanced Traveler Information Systmes.r

The products of this research project …

Reflection Anistropy Spectroscopy Study Of The Near Surface Electric Field In Low-Temperature Grown Gaas (001), Todd Holden, Fred H. Pollak, J. L. Freeouf, D. Mcinturff, J. L. Gray, Mark S. Lundstrom, J. M. Woodall

Department of Electrical and Computer Engineering Faculty Publications

We have evaluated an ‘‘effective depletion width’’ of =< 45 Å and the sign (n-type/upward band bending) of the near surface electric field in low-temperature grown GaAs ~001! using the optical method of reflection anisotropy spectroscopy in the vicinity of the spin-orbit split E₁ , E₁ + Delta₁ optical features. Our results provide evidence that surface Fermi level pinning occurs for air exposed (001) surfaces of undoped low temperature grown GaAs.

Electrical Characteristics Of Nearly Relaxed Inas/Gap Heterojunctions, E H. Chen, T. P. Chin, J. M. Woodall, Mark S. Lundstrom

Department of Electrical and Computer Engineering Faculty Publications

The electrical properties of lattice mismatched InAs/GaP heterojunctions are examined. In spite of a high dislocation density at the heterointerface, the current versus voltage characteristics show nearly ideal behavior with low reverse leakage currents and high breakdown voltages. The forward currentvaried exponentially with bias displaying ideal factors of 1.10 or less. Band offsets estimated from current–voltage and capacitance–voltage analysis are consistent with previous estimates based on differences in Schottky barrier heights.

Technique For Measurement Of The Minority Carrier Mobility With A Bipolar Junction Transistor, S. L. D'Souza, Michael R. Melloch, Mark S. Lundstrom, E. S. Harmon

Department of Electrical and Computer Engineering Faculty Publications

A simple technique to measure the minority carrier mobility using a bipolar junction transistor is demonstrated. By fixing the base-emitter voltage, the carrier injection into the base is constant. The collector current is then monitored as a function of a magnetic field applied perpendicular to the current transport across the base. The magnetic field leads to an increase in base transit time and a corresponding decrease in collector current. From the resulting fractional change in collector current, the minority carrier mobility in the base can be determined. For narrow base transistors, quasiballistic transport across the base must be taken into …

1997 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Herpicc

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for agency officials and employees responsible for Indiana’s local road infrastructure.

Building Embankments Of Fly/Bottom Ash Mixtures, Ahmed M.K. Karim, C. W. Lovell, Rodrigo Salgado

JTRP Technical Reports

This research investigates the engineering properties of mixtures of bottom ash and Class F fly ash relevant to their utilization in highway embankment construction. The research included ash samples from two major power plants in Indiana that disposed of their ash differently. The first power plant disposes of the bottom ash and fly ash separately and hence explicit mixtures were synthetically formed and tested. The second power plant disposes of the bottom ash and fly ash together in a common location and hence they become homogeneous samples for the research. Characterization of the ash included grain size analysis, specific gravity, …

Indot Multimedia Applications Prototype Development, Bob G. Mccullouch

JTRP Technical Reports

Multimedia technologies open a new data set for DOT organizations. By adding pictures, sounds, animation, and video, new computer applications can be developed that will bring many benefits. This project investigated the utilization of multimedia into DOT operations. Applications were developed in three different topical areas: Employee Information or Orientation, a Bridge Plan Reading course, and a Construction Equipment utilization prototype. The first two are fully developed implementable tools that will be utilized by INDOT. These developments provide insight into how multimedia can be a useful tool for training and providing performance support to DOT employees. Other tools can be …

Development Of A Congestion Management System For Indiana, Robert K. Whitford, Jennifer L. Opsuth

JTRP Technical Reports

This study details a procedure used in determinng links with deficiencies. A procedure was developed by means of which congestion on raodways links can be identified as being congested will be subjected to a more detailed study to determine extent, duration, and severity of congestion. The procedure was developed by the use of the Highway C apacity Manual (HCM) and the Indiana Department of Transportation's (INDOT) Road Inventory Data Base.

Freeway Incident Likelihood Prediction And Response Decision-Making, Samer Madanat, Hongyu Pan, Pen-Chi Liu, Hualiang Teng

JTRP Technical Reports

This research project consisted of two parts. The first part developed a set of real-time incident likelihood prediction models. The second part developed a freeway incident response decision-making methodology based on sequential hypothesis testing methods. The freeway incident likelihoods predicted by the real-time prediction models act as prior probabilities for the freeway incident response decision-making system. The products of this research project will be incorporated in the Advanced Traffic Management System that is being implemented on the Borman Expressway, a 16-mile segment of I-80 in northwest Indiana. The decision-making system can be used by traffic management personnel to assist in …

Prediction Models For Incident Clearance Time For Borman Expressway (Vol. 1; Vol. 2: 96/11), Samer Madanat, Ahmed Feroze

JTRP Technical Reports

This research consisted of two parts; this report is Volume 1 of 2 Volumes; Volume 2 is Report No. FHWA/IN/JHRP-9611. The first part developed a set of incident clearance time prediction models for the Borman Expressway. The second part consisted of modeling driver’s route choice behavior under the influence of advanced traveler information systems. Volume 1 of this report describes the incident clearance time prediction models for the Borman Expressway. The prediction of incident clearance time from these models can facilitate in efficient incident management and support traveler information systems. The products of this research project will be incorporated in …

Study Of Side Ditch Liners For Highway Application, Anthony S. Calderon, Philippe L. Bourdeau

JTRP Technical Reports

Over the past few years, the INDOT new materials department has received numerous erosion control products (mostly geosynthetics) to evaluate as alternatives to riprap and concrete in ditch liners. Potential benefits include lower construction costs and better aesthetics over current products. Unfortunately, no specification, design methodology, or classification system currently exists for these erosion control blankets.

In this project's phase I, existing information and knowledge on erosion control materials used to line highway side drainage ditches were investigated. From the available technical1iterature (journal and conference publications, other DOTs specifications, manufacturer documentation, independent test laboratory test data), design methodologies, classification system, …

Automating Field Data Collection In Maintenance Operations, Bob G. Mccullouch

JTRP Technical Reports

Field data collection and management in DOT organizations requires a considerable amount of resources in the form of personnel and management systems. Recent studies performed by the researcher revealed that an average of 30-50% of some field supervisory personnel's time is spent on processing field data paperwork. This is a considerable amount of time spent on an undesirable task and is taking these employees away from more important job duties. This project automated two maintenance field data collection functions. One was a Crew Day Card, which is a card used by a maintenance crew to document the activity performed. Information …

Moment-Rotation Relationship For Unified Auto-Stress Design Of Continuous-Span Bridge Beam And Girders, Donald W. White, J. A. Ramirez, Karl E. Barth

JTRP Technical Reports

This report summarizes the development and trial application of simplified moment-rotation relationships for inelastic design of continuous-span beam and girder bridges. The research described within involves the execution of a reasonably comprehensive set of finite element parametric studies to fill in knowledge gaps in the available experimental data pertaining to the hogging moment-plastic rotation behavior of steel and composite steel-concrete bridge girders. Based on these studies, relationships have been developed for the moment-plastic rotation behavior at the pier sections in these types of bridges. The moment-rotation model is validated against available experimental data, several focused new experimental tests, and current …

Determining The Viability Of The "Rated Axle Load Enhancement System" For Concrete Pavement, Chih-Jen Lee, Charles D. Sutton, Thomas D. White

JTRP Technical Reports

Concrete pavements in large part are designed as flat slabs although in the past they have included thickened edges. Thickened edge slabs are used today where positive load transfer for some reason cannot be provided. The Rated Axle Load Enhancement (RALE) system concept involves the use of longitudinal stems to stiffen the concrete slab. A close analogy is that of a wide double or quadruple "T" beam. The stems may be rectangular or trapezoidal.

In this study, RALE systems with two and four rectangular stems as well as plain concrete slabs were analyzed using the finite element method (FEM). The …

An Evaluation Of The Cost Effectiveness Of The Hoosier Helper Program And Framework For The Design Of Its Optimal System Configuration, Phase 1, Steven P. Latoski, Raktim Pal, Kumares C. Sinha

JTRP Technical Reports

This research provides a benefit-cost analysis for each of two distinct Hoosier Helper operating scenarios: daytime patrol and 24-hour patrol. The computation of agency cost involves an aggregation of equivalent annual investment cost, employee salaries and fringe benefit, overhead cost, and maintenance cost for Hoosier Helper. The following components comprise the estimation of Hoosier Helper benefits: non-recurrent congestion delay savings, secondary crash reduction, and vehicle operating cost savings. The results of an analysis of over two thousand evaluations from motorists assisted by Hoosier Helper are also presented.

Minimum Crushed Aggregate Requirements, Haiming Huang, Thomas D. White

JTRP Technical Reports

An accelerated pavement testing facility has been developed by Purdue University for the Indiana Department of Transportation. The test facility includes a test pit in which prototype scale pavement sections can be installed. The Accelerated Pavement Tester loading system has the capability of applying moving wheel loads to the test sections. An initial study utilizing the accelerated pavement test facility has been conducted at Purdue University to determine the minimum crushed aggregate requirements in asphalt mixtures in Indiana. This study addresses effects of various constituents of the asphalt mixture on pavement rutting. The factors included in this study are aggregate …

Testing Of Multi-Span Bridges With Full Span Precast Prestressed Concrete Panels (Phase 1), Robert J. Peterman, J. A. Ramirez

JTRP Technical Reports

The purpose of this study was to assess the behavior and durability of multi-span bridges constructed with full-span prestressed concrete form panels. The use of full-span prestressed concrete form panels for bridges with spans of 40 ft. or less is an economical method of construction due to the reduction of on-site formwork and labor required by alternate cast-in-place systems. In this research, a pair of two-span bridges utilizing full-span prestressed concrete form panels were fabricated and tested in the Karl H. Kettelhut Structural Engineering Laboratory at Purdue University. Time-dependent effects were monitored during the cast-in-place (CIP) concrete cure period of …