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High-Performance Concrete Bridge Decks: A Fast-Track Implementation Study Volume 2: Materials, Mateusz Radlinski, Jan Olek 2010 Purdue University

High-Performance Concrete Bridge Decks: A Fast-Track Implementation Study Volume 2: Materials, Mateusz Radlinski, Jan Olek

JTRP Technical Reports

The purpose of this research was to examine the applicability of ternary binder systems containing ordinary portland cement (OPC), class C fly ash (FA) and silica fume (SF) for bridge deck concrete. This was accomplished in two parts, the laboratory part and a field application part.

During the laboratory studies, four ternary mixtures, each containing either 20% or 30% FA and either 5% or 7% SF were subjected to four different curing regimes (air drying, 7 days curing compound application and 3 or 7 days wet burlap curing). In general, all four ternary mixtures exhibited very good water and chloride ...


Use Of Dynamic Cone Penetration And Clegg Hammer Tests For Quality Control Of Roadway Compaction And Construction, Hobi Kim, Monica Prezzi, Rodrigo Salgado 2010 Purdue University

Use Of Dynamic Cone Penetration And Clegg Hammer Tests For Quality Control Of Roadway Compaction And Construction, Hobi Kim, Monica Prezzi, Rodrigo Salgado

JTRP Technical Reports

Soil compaction quality control presently relies on the determination of the in-place compacted dry unit weight, which is then compared with the maximum dry unit weight obtained from a laboratory compaction test. INDOT requires that the in-place dry unit weight for compacted soil be over 95% of the laboratory maximum dry unit weight. In order to determine the in-place dry unit weight, INDOT engineers generally use nuclear gauges, which are hazardous and also costly because of the required safety precautions. Thus, several alternative tests such as the Dynamic Cone Penetration Test (DCPT) and the Clegg Hammer Test (CHT) were introduced ...


Monitoring And Predicting Traffic Induced Vertebrate Mortality Near Wetlands, J. Andrew DeWoody, Jamie M. Nogle, Melissa Hoover, Barny Dunning 2010 Purdue University

Monitoring And Predicting Traffic Induced Vertebrate Mortality Near Wetlands, J. Andrew Dewoody, Jamie M. Nogle, Melissa Hoover, Barny Dunning

JTRP Technical Reports

Animal-vehicle collisions are undesirable to the general public, to drivers, to insurance providers, to biologists, and presumably to the animals themselves. However, traffic-induced mortality (―roadkill‖) is difficult to mitigate in large part because scientists lack the empirical data required to understand the patterns and processes associated with roadkill. Roadkill is not randomly distributed in space or in time, but what are the primary determinants of roadkill? And do they differ across organismal groups? We monitored vertebrate roadkill at 6 wetland and 6 upland sites in Indiana twice a week for a period of 20 months to determine whether roadkill occurs ...


Geotechnical Design Based On Cpt And Pmt, Daehyeon Kim, Younjin Shin, Nayyar Siddiki 2010 Purdue University

Geotechnical Design Based On Cpt And Pmt, Daehyeon Kim, Younjin Shin, Nayyar Siddiki

JTRP Technical Reports

This research presents the correlation of undrained shear strength based on the cone resistance from the cone penetration test (CPT) for clayey soils in Indiana. It utilized the field cone penetration test program including the CPT, the index test, the one dimensional test and the triaxial test. The cone factor, which is essential to reliable estimation of undrained shear strength from cone resistance, has been evaluated considering the plasticity index of soils. The cone factor is influenced by the penetration rate during the CPT and test methods that are used for obtaining the undrained shear strength. The rate effect of ...


Knowledge Transformation In The United States Air Force Civil Engineer Career Field: A System Dynamics Approach, Gregory J. Ward 2010 Air Force Institute of Technology

Knowledge Transformation In The United States Air Force Civil Engineer Career Field: A System Dynamics Approach, Gregory J. Ward

Theses and Dissertations

Recent operations in Iraq and Afghanistan have brought the level of expeditionary contractors to historically unprecedented levels, altering the work composition for military engineers. The alteration has shifted emphasis from technical knowledge areas toward managerial knowledge associated with supervising the increased number of contractors. This research utilizes System Dynamics modeling to analyze this shift in the United States Air Force Civil Engineer officer career field and resulting transformative effect on career field knowledge levels, both technical and managerial. The model is then tested with multiple external policy adjustments in the areas of career field structure, training, and operating policy. Results ...


Mercury In The Environment: Field Studies From Tampa, Bolivia, And Guyana, Joniqua A'ja Howard 2010 University of South Florida

Mercury In The Environment: Field Studies From Tampa, Bolivia, And Guyana, Joniqua A'Ja Howard

Graduate Theses and Dissertations

Tampa (US), Guyana (SA), and Bolivia (SA), are geographically, socially, economically, and politically unique which make them ideal sites to study issues of mercury and sustainability. Mercury’s innate ability to bioaccumulate and biomagnify in aquatic and terrestrial ecosystems poses a severe threat to both human and environmental health. The most vulnerable populations affected by mercury consumption include coastal communities, children, women of child-bearing age, the indigenous poor and persons with high environmental/occupational exposure factors. Communities in the regions of Florida, Bolivia, and Guyana whose diets are high in fish and are environmentally/occupationally exposed to mercury may be ...


Evaluation Of Hma Moisture Sensitivity Using The Nottingham Asphalt Test Equipment, R. Christopher Williams 2010 Iowa State University

Evaluation Of Hma Moisture Sensitivity Using The Nottingham Asphalt Test Equipment, R. Christopher Williams

Tech Transfer Summaries

Identifying moisture-susceptible pavements can reduce maintenance costs accrued with a poorly performing pavement.


The Role Of Driver Age And Gender In Motor Vehicle Fatal Crashes, Heng Wei, Deogratias Eustace 2010 University of Cincinnati - Main Campus

The Role Of Driver Age And Gender In Motor Vehicle Fatal Crashes, Heng Wei, Deogratias Eustace

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

This study compares the age and gender of at-fault drivers who were involved in fatal crashes and the corresponding driving errors that contributed to these crashes. This comparison provides insights that may help traffic engineers devise countermeasures to lessen the number of these unnecessary deaths. Data from the Fatality Analysis Reporting System (FARS) for the years 2001 through 2003 were used in this study. The analysis included passenger vehicles (automobiles, utility vehicles, minivans, and pickup trucks) involved in either single or two vehicle crashes. The driver responsible in each crash was identified through the driver error variable codes as listed ...


Evaluation Of Hot Mix Asphalt Moisture Sensitivity Using The Nottingham Asphalt Test Equipment, R. Christopher Williams, Tamer M. Breakah 2010 Iowa State University

Evaluation Of Hot Mix Asphalt Moisture Sensitivity Using The Nottingham Asphalt Test Equipment, R. Christopher Williams, Tamer M. Breakah

InTrans Project Reports

Pavements are subjected to different stresses during their design lives. A properly designed pavement will perform adequately during its design life, and the distresses will not exceed the allowable limits; however, there are several factures that can lead to premature pavement failure. One such factor is moisture sensitivity.

AASHTO T 283 is the standard test used in the moisture susceptibility evaluation of asphalt mixtures, but the results of the test are not very representative of the expected behavior of asphalt mixtures. The dynamic modulus test measures a fundamental property of the mixture. The results of the dynamic modulus test can ...


Quality Control Of Soil Water Data In Acis – A Case Study In Nebraska, Jinshing You, Kenneth G. Hubbard, Rezaul Mahmood, Venkataramana Srihar, Dennis Todey 2010 University of Nebraska – Lincoln

Quality Control Of Soil Water Data In Acis – A Case Study In Nebraska, Jinshing You, Kenneth G. Hubbard, Rezaul Mahmood, Venkataramana Srihar, Dennis Todey

Civil Engineering Faculty Publications and Presentations

Soil moisture is the key state variable from both climate and hydrologic cycle assessment perspectives. Automated measurements of soil moisture were not possible in the past decades. Sensors deployed in the field with real-time monitoring networks such as the Automated Weather Data Network (AWDN) in Nebraska have not only become affordable but enhanced the monitoring capability of the network with valuable soil moisture data added to the existing stream of hourly and daily weather data for precipitation, air temperature, humidity, solar radiation, wind speed, and soil temperature. However, to assure the quality of the data, quality control (QC) tools are ...


Identification And Implementation Of Best Management Practices For Erosion And Sediment Control That Conform To Indiana Storm Water Quality Regulations And Guidance, Lynn A. Corson 2010 Environmental Management Concepts, LLC

Identification And Implementation Of Best Management Practices For Erosion And Sediment Control That Conform To Indiana Storm Water Quality Regulations And Guidance, Lynn A. Corson

JTRP Technical Reports

No abstract provided.


Innovative Bridge Construction Program: Implementation Of Full-Depth Bridge Deck Panels In Indiana, Robert J. Frosch, Julio A. Ramirez, Stephen Price 2010 Purdue University

Innovative Bridge Construction Program: Implementation Of Full-Depth Bridge Deck Panels In Indiana, Robert J. Frosch, Julio A. Ramirez, Stephen Price

JTRP Technical Reports

This research evaluates the use of precast, prestressed bridge deck panels on new and existing precast, prestressed concrete girders. The evaluation focuses on the ease of construction and the ability of the system to develop composite action with the concrete girders. A system developed by the Connecticut Department of Transportation (CDOT) and Precast/Prestressed Concrete Institute New England Region (PCINER) was chosen for testing from available systems because it is representative of the current geometry of precast bridge deck panels. The CDOT system was evaluated in a series of large scale tests in which the panels were placed on a ...


Rebuilding After Disaster - Engineering Lessons From The 2004 Tsunami, Liam McCarton 2010 Technological University Dublin

Rebuilding After Disaster - Engineering Lessons From The 2004 Tsunami, Liam Mccarton

Articles

On 26th December 2004 a magnitude 9 earthquake occurred off the west coast of northern Sumatra, Indonesia. The sudden and violent vertical displacement of the sea floor caused a disturbance to the overlying water column, which generated waves (tsunami) that propagated rapidly across the whole of the Indian Ocean. Typically, in open ocean waters, these waves have long wavelengths of the order of 200km and low trough to crest amplitudes. These properties allow them to conserve energy as they propagate over large distances. As the waves enter the shallower waters of coastal areas, their amplitude increases dramatically and their velocity ...


Development Of A Framework For Ex Post Facto Evaluation Of Highway Project Costs In Indiana, Abhishek Bhargava, Samuel Labi, Kumares C. Sinha 2010 Purdue University

Development Of A Framework For Ex Post Facto Evaluation Of Highway Project Costs In Indiana, Abhishek Bhargava, Samuel Labi, Kumares C. Sinha

JTRP Technical Reports

Researchers and engineers continue to ponder over the reliability of construction cost forecasts made at the early stages of project development. After a project has been incorporated in the statewide transportation improvement program, increasingly detailed estimates of its cost are prepared at the remaining stages of project development, namely, design estimate, engineer’s estimate, and bid estimate. The accuracy of such estimates has critical consequences on contract administration and asset management in general. Most agencies do not have a methodological framework to identify projects where final cost is likely to exceed the cost estimate, or where the cost estimate is ...


A Truck-Mounted Scour Inspection System For Indot, Dennis Lyn, Thomas Cooper, Ranadeep Das 2010 Purdue University

A Truck-Mounted Scour Inspection System For Indot, Dennis Lyn, Thomas Cooper, Ranadeep Das

JTRP Technical Reports

Scour monitoring may be a useful tool for INDOT in dealing with local scour problems at bridge sites, and a truck-mounted scour-monitoring system is an attractive option offering flexibility in deployment and cost-effectiveness. This report deals with two aspects related to the further development of such a system: i) a web application that combines the latest available information regarding streamflow with relevant information regarding bridges considered susceptible to bridge scour, thereby assisting in truck-deployment decisions, and ii) development of an acoustic positioning system as a replacement of the original mechanical positioning in order to improve the ease of use.

The ...


Performance Of A Stormwater Filter And Bacteria Inactivation Using Biocidal Media, Alexander Scott Bowerman 2010 California Polytechnic State University - San Luis Obispo

Performance Of A Stormwater Filter And Bacteria Inactivation Using Biocidal Media, Alexander Scott Bowerman

Master's Theses and Project Reports

There are many possible ways to mitigate stormwater pollution, but this study focused on the DrainPacTM catchment basin insert and the feasibility of integrating N-halamine biocidal brominated beads into the filter system. This study was divided into three sections. The first section involved testing a DrainPacTM filter for treatable flow rates, head loss, and removal of solids, oil, and bacteria. The DrainPacTM filter is designed to be installed in a stormwater catch basin. The filter is composed of a 12 x 41 inch metal frame with textile filter media attached to it in a basket shape. The upper portion of ...


The Effects Of Airbags And Seatbelts On Occupant Injury In Longitudinal Barrier Crashes, Doug Gabauer, Hampton C. Gabler 2010 Bucknell University

The Effects Of Airbags And Seatbelts On Occupant Injury In Longitudinal Barrier Crashes, Doug Gabauer, Hampton C. Gabler

Faculty Journal Articles

Introduction: Longitudinal barriers, such as guardrails, are designed to prevent a vehicle that leaves the roadway from impacting a more dangerous object while minimizing the risk of injury to the vehicle occupants. Current full-scale test procedures for these devices do not consider the effect of occupant restraints such as seatbelts and airbags. The purpose of this study was to determine the extent to which restraints are used or deployed in longitudinal barrier collisions and their subsequent effect on occupant injury. Methods: Binary logistic regression models were generated to predict occupant injury risk using data from the National Automotive Sampling System ...


An Investigation Of The Accuracy Of Pressure Measurements And Pressure Interpolation On The Roof Of A Low-Rise Building, Matt Goliber, Sri Sritharan, Partha Sarkar 2010 Iowa State University

An Investigation Of The Accuracy Of Pressure Measurements And Pressure Interpolation On The Roof Of A Low-Rise Building, Matt Goliber, Sri Sritharan, Partha Sarkar

Reports and White Papers

With three of the largest metropolitan areas in the United States along the Gulf coast (Houston, Tampa, and New Orleans), residential populations ever increasing due to the subtropical climate, and insured land value along the coast from Texas to the Florida panhandle greater than $500 billion, hurricane related knowledge is as important now as ever before. This report focuses on model-scale low-rise building wind tunnel tests done in connection with full-scale low-rise building tests. Mainly, pressure data collection equipment and methods used in the wind tunnel are comparable to pressure data collection equipment and methods used in the field.


A Robust Two-Equation Model For Transient-Mixed Flows, Arturo S. León, Mohamed S. Ghidaoui, Arthur R. Schmidt, Marcelo H. García 2010 Boise State University

A Robust Two-Equation Model For Transient-Mixed Flows, Arturo S. León, Mohamed S. Ghidaoui, Arthur R. Schmidt, Marcelo H. García

Civil Engineering Faculty Publications and Presentations

A finite volume model was built upon earlier work with the aim of simulating free surface flows, pressurized flows and their simultaneous occurrence (mixed flows) in single-liquid and two-phase flow conditions (entrapment and release of air pockets). The model presented herein is based on a two-governing equation model. Three main contributions are presented herein, namely: (1) the ability of the proposed model to simulate mixed flows without restriction of the flow type in the free surface region (e.g., supercritical flow), (2) extension of our single-phase flow model for simulating the entrapment and release of air pockets, and (3) formulation ...


An Assessment Of Traffic Safety In Urban Deer Herd Management Zones In Iowa, Konstantina Gkritza, Michael James Baird, Zachary Hans 2010 Iowa State University

An Assessment Of Traffic Safety In Urban Deer Herd Management Zones In Iowa, Konstantina Gkritza, Michael James Baird, Zachary Hans

Tech Transfer Summaries

Many states are striving to keep their deer population to a sustainable and controllable level while maximizing public safety. In Iowa, measures to control the deer population include annual deer hunts and special deer herd management plans in urban areas. While these plans may reduce the deer population, traffic safety in these areas has not been fully assessed. Using deer population data from the Iowa Department of Natural Resources and data on deer-vehicle crashes and deer carcass removals from the Iowa Department of Transportation, the authors examined the relationship between deer-vehicle collisions, deer density, and land use in three urban ...


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