Methods for Improving Consistency Between Statewide and Regional Planning Models (open access)

Methods for Improving Consistency Between Statewide and Regional Planning Models

"This research provides insight into the current practices of statewide modelling across the USA and presents methods to not only to quantify the inconsistencies, but reduce them" (p. i).
Date: December 2017
Creator: Boyles, Stephen David, 1982-; Bhat, Chandra R. (Chandrasekhar R.), 1964-; Duthie, Jennifer Clare; Jiang, Nan; Dias, Felipe; Jafari, Ehsan et al.
Object Type: Report
System: The Portal to Texas History
Developing a Testing Device for Total Pavements Acceptance : Third Year Report (open access)

Developing a Testing Device for Total Pavements Acceptance : Third Year Report

This report provides information on the third year of the Project 0-6005 test progress towards building the Total Pavement Acceptance Device (TPAD).
Date: August 2012
Creator: Lee, Jung-Su; Nam, Boo H.; Lewis, Mike; Hayes, Richard; Scullion, Thomas & Liu, Wenting
Object Type: Report
System: The Portal to Texas History
Experimental Results on Soil-Geosynthetic Interaction Stiffness (open access)

Experimental Results on Soil-Geosynthetic Interaction Stiffness

This report summarizes small pullout test results conducted as par of Texas Department of Transportation (TxDOT) Project 5-4829 to assess the performance of a newly developed small pullout box as well as the associated K SGI model.
Date: February 2012
Creator: Zornberg, Jorge G.; Ferreira, J. A. Z. & Roodi, G. H.
Object Type: Report
System: The Portal to Texas History
Binder Rheology and Performance in Warm Mix Asphalt : Interim Report (open access)

Binder Rheology and Performance in Warm Mix Asphalt : Interim Report

This report presents the preliminary findings from a study conducted to investigate the influence of chemical warm mix asphalt (WMA) additives and reduced aging on the viscosity, stiffness, susceptibility to permanent deformation, fracture resistance, and thermal cracking resistance of asphalt binders.
Date: August 2012
Creator: Arega, Zelalem & Bhasin, Amit
Object Type: Report
System: The Portal to Texas History
Texas Roundabout Guidelines: Final Report (open access)

Texas Roundabout Guidelines: Final Report

"This report contains best practices for choosing appropriate locations and design concepts for Texas roundabouts. This research effort is comprised of the following components: synthesis of available literature and analysis methods, development of capacity analysis methods, validation and enhancement of existing tools, and a spreadsheet tool to aid in roundabout planning and implementation."
Date: October 2011
Creator: Mills, Alison; Duthie, Jen; Machemehl, Randy B.; Ferguson, Erin; Waller, Travis; Sun, Dazhi et al.
Object Type: Book
System: The Portal to Texas History
Assessing the environmental justice impacts of toll road projects (open access)

Assessing the environmental justice impacts of toll road projects

"The objective of this study was to extend the work that was conducted under TxDOT Research Project 0-5208 by (a) reviewing the ability of available tools and analysis techniques to quantify and qualitatively describe the (environmental justice) EJ impacts associated with toll road projects and toll road systems through an evaluation of state-of-the-practice applications, and (b) recommending a suitable approach to assess the EJ impacts of toll roads and toll road systems on EJ communities."
Date: October 2010
Creator: Prozzi, Jolanda; Carroll, Lindsey; Loftus-Otway, Lisa Dawn; Bhat, Chandra; Paleti, Rajesh & McCray, Talia M.
Object Type: Report
System: The Portal to Texas History
Validation and implementation of the structural condition index (SCI) for network-level pavement evaluation (open access)

Validation and implementation of the structural condition index (SCI) for network-level pavement evaluation

"The objective of this research is to validate the pavement Structural Condition Index (SCI) developed under a previous Research Project, 0-4322, and to develop guidelines for implementing the SCI at the network level."
Date: June 2011
Creator: Murphy, Michael; Zhang, Zhanmin & Peddibhotla, Sree Sravya Sruthi
Object Type: Report
System: The Portal to Texas History
Laboratory and field evaluations of external sulfate attack in concrete (open access)

Laboratory and field evaluations of external sulfate attack in concrete

"The research described in this report aims to address several of these lingering issues, especially those that are particularly relevant to the state of Texas."
Date: January 2011
Creator: Drimalas, Thanos; Clement, John C.; Folliard, Kevin J.; Dhole, Raj & Thomas, Michael D. A.
Object Type: Report
System: The Portal to Texas History
Design and application of accessible land-use modeling tools for Texas regions (open access)

Design and application of accessible land-use modeling tools for Texas regions

"This report consists of two parts. The first summarizes key details of the Suitability Analysis (SA) model, while the second illustrates the implementation details of the Gravity Land-Use Model (G-LUM). Both modeling approaches have been applied to the Austin region of Texas, but for different case study examples."
Date: August 2010
Creator: Kockelman, Kara; Anjomani, Ardeshir; Paul, Binny M.; Nostikasai, Dian; Tayyebi, Ali & Kharel, Gehandra
Object Type: Report
System: The Portal to Texas History
Fatigue Life of Steel Base Plate to Pole Connections for Traffic Structures (open access)

Fatigue Life of Steel Base Plate to Pole Connections for Traffic Structures

"This is a final report of an extensive experimental and analytical examination of the fatigue behavior of the welded end connection used on high-mast light structures and traffic signal masts. The weld details commonly used for these connections produce very poor fatigue performance. Their performance is a function of base plate stiffness, weld type and geometry, and number of anchor bolts. Recommended connections and their corresponding fatigue strength are given as well as recommended fabrication and welding specifications."
Date: January 2011
Creator: Stam, Andrew Philip; Frank, Karl H.; Stern, A. P.; Anderson, T. H. & Richman, N. B.
Object Type: Report
System: The Portal to Texas History
Peer state assessment of TxDOT maintenance program and practices:  workshop and road rally findings (open access)

Peer state assessment of TxDOT maintenance program and practices: workshop and road rally findings

"The goal of the project was to conduct a workshop at CTR and in the Austin District that would educate the visiting peers on TxDOT"s maintenance practices and invite their feedback."
Date: January 2011
Creator: Gao, Lu; Chi, Seokho; Prozzi, Jorge Alberto; Yildirim, Yetkin; Zhang, Zhanmin; Centurion, Claudia et al.
Object Type: Report
System: The Portal to Texas History
Proposed TxDOT strategic research program (open access)

Proposed TxDOT strategic research program

"This report documents the results of the work conducted by the Center for Transportation Research (CTR) at the University of Texas at Austin, the Texas Transportation Institute (TTI), and The Center for Multidisciplinary Research in Transportation (TechMRT) at Texas Tech University, to assist TxDOT in developing the elements of the SRP."
Date: October 2010
Creator: Persad, Khali (Khali Ram), 1956-; Gilliland, Cynthia A. Weatherby; Nash, Phil; Machemehl, Randy B.; Stockton, Bill & Cleveland, Theodore
Object Type: Report
System: The Portal to Texas History
Materials selection for concrete overlays :  information survey review and evaluation of existing concrete overlays in Texas (open access)

Materials selection for concrete overlays : information survey review and evaluation of existing concrete overlays in Texas

"A comprehensive search and review of the use of concrete overlays by the TxDOT districts as well as other DOTs was conducted, with special emphasis focused on gathering information about the constituent materials and mixture proportioning used in the concrete overlays. This review also included new materials such as fibers used in previous studies and new types of fibers currently available. Publications and articles covering the various overlay rehabilitations were used as the background this project, as well as the several studies and implementation projects have been conducted for TxDOT."
Date: April 2011
Creator: Kim, Dong Hyun; Trevino, Manuel; Whitney, David P. & Ferron, Raissa
Object Type: Report
System: The Portal to Texas History
Proposed Texas Department of Transporation Strategic Research Program: Second Year Report (open access)

Proposed Texas Department of Transporation Strategic Research Program: Second Year Report

In February 2010, The Texas Department of Transportation (TcDOT) contracted with the Center for Transportation Research (CTR) at The University of Texas at Austin, the Texas Transportation Institute (TTI), and The Center for Multidisciplinary Research in Transportation (TechMRT) at Texas Tech University, to assist TxDot in developing a Strategic Research Program (SRP). This report documents the work conducted from September 2010 to August 2011.
Date: August 2011
Creator: Persad, Khali; Machemehl, Randy; Nash, Phillip T.; Cleveland, Theodore G.; Weatherby, Cynthia & Stockton, William
Object Type: Report
System: The Portal to Texas History
Measuring access to transit service in rural transit systems : feedback from the workshops and recommendations for improving the Demand Response Transit accessibility tool (open access)

Measuring access to transit service in rural transit systems : feedback from the workshops and recommendations for improving the Demand Response Transit accessibility tool

Report on the application of a paratransit microsimulation patron accessibility analysis tool in four rural transit agencies in workshops. The workshops provided an overview of the Demand Response Transit [DRT] accessibility tool developed by the research team, obtained feedback on the results predicted by the DRT tool, and identified ways to improve the DRT tool.
Date: August 2011
Creator: Vyas, Gaurav; Bhat, Chandra R. & Ferdous, Zazneen
Object Type: Report
System: The Portal to Texas History
A web-based pavement performance and maintenance management and Geographic Information Systems mapping system for easy access to pavement condition information (open access)

A web-based pavement performance and maintenance management and Geographic Information Systems mapping system for easy access to pavement condition information

"This report presents a new approach to the development of such a decision support system with its focus on maintenance management for TxDOT."
Date: February 2011
Creator: Murphy, Michael & Zhang, Zhanmin
Object Type: Report
System: The Portal to Texas History
Comparative study of mechanical and corrosion resistance properties of bridge post-tensioning strands (open access)

Comparative study of mechanical and corrosion resistance properties of bridge post-tensioning strands

This report summarized the exploration of new methods of protection for the strands used in post-tensioning of concrete bridges.
Date: August 2011
Creator: Mac Lean, Sean Anthony; Breen, J. E. & Kalina, R. D.
Object Type: Report
System: The Portal to Texas History
Equipment Replacement Optimization (open access)

Equipment Replacement Optimization

"The objective of the Texas Department of Transportation (TxDOT) Research Project 7-4941 is to; determine the best optimization methodology; evaluate commercial fleet management systems; develop the model if this cost-effective relative to purchasing a commercial model; and validate the new model as needed using data available on TxDOT's current fleet."
Date: October 2011
Creator: Fan, Wei; Brown, Leonard; Patterson, Casey; Winkler, Mike; Schminkey, Justin; Western, Kevin et al.
Object Type: Report
System: The Portal to Texas History
Guidance for erection and construction of curved I-girder bridges (open access)

Guidance for erection and construction of curved I-girder bridges

"This report summarizes the methods, results, and recommendations from a research investigation on the behavior of horizontally curved girders during construction. This information provides guidance on critical issues that bridge engineers face when designing curved steel plate I-girders."
Date: May 2010
Creator: Stith, Jason; Schuh, Andrew; Farris, Jamie; Petruzzi, Brian; Helwig, Todd; Williamson, Eric et al.
Object Type: Report
System: The Portal to Texas History
Laboratory evaluation of influence of operational tolerance (acceptance criterion) on performance of Hot-Mix Asphalt Concrete (open access)

Laboratory evaluation of influence of operational tolerance (acceptance criterion) on performance of Hot-Mix Asphalt Concrete

Report on a study examining the effects of variability in mix design of hot-mix asphalt concrete. The study tested the laboratory performance of the asphalt mixes and performed statistical analyses to determine the effects of each variable.
Date: June 2010
Creator: Vazquez, Christian G.; Aguiar-Moya, José Pablo; Smit, Andre de F. & Prozzi, Jorge Alberto
Object Type: Report
System: The Portal to Texas History
Progress during the first year towards building the Total Pavement Acceptance Device (TPAD) (open access)

Progress during the first year towards building the Total Pavement Acceptance Device (TPAD)

This report discusses the significant progress that was made towards developing the Total Pavement Acceptance Device (TPAD) during the first year of Project 0-6005.
Date: September 2010
Creator: Stokoe, Kenneth H.; Kallivokas, Loukas F.; Nam, Boo H.; Carpenter, Claire K.; Bryant, Adam D.; Weeks, Damon A. et al.
Object Type: Report
System: The Portal to Texas History
Guidance on extracting value from Texas Department of Transportation's land holdings (open access)

Guidance on extracting value from Texas Department of Transportation's land holdings

"In this report the Center of Transportation Research at The University of Texas at Austin undertook a comprehensive research study to identify and determine when, where, and under what circumstances Texas Department of Transportation (TxDOT) should pursue the implementation of Value Extraction Applications (VEA), and how to effectively recognize and involve key stakeholders."
Date: July 2012
Creator: Prozzi, Jolanda; Paes, Thiago; Loftus-Otway, Lisa & Caldas, Carlos
Object Type: Report
System: The Portal to Texas History
Materials selection for concrete overlays : the final report (open access)

Materials selection for concrete overlays : the final report

Report on the existing concrete overlays in Texas and the results of laboratory research on the material selection and construction of concrete overlays.
Date: July 2012
Creator: Kim, Dong H.; Fowler, David W.; Ferron, Raissa P.; Trevino, Manuel M. & Whitney, David P.
Object Type: Report
System: The Portal to Texas History
Shear strengthening of reinforced and prestressed concrete beams using Carbon Fiber Reinforced Polymer (CFRP) sheets and anchors (open access)

Shear strengthening of reinforced and prestressed concrete beams using Carbon Fiber Reinforced Polymer (CFRP) sheets and anchors

This report presents experimental results, installation procedures for CFRP sheets and anchors, specifications for fabrication and installation of CFRP anchors, and anchored CFRP shear design guidelines.
Date: February 2012
Creator: Kim, Yungon.
Object Type: Report
System: The Portal to Texas History