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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: Research report (University of Texas at Austin. Center for Transportation Research)
Project report on the continued development and analysis of the Flexible Pavements Database

Project report on the continued development and analysis of the Flexible Pavements Database

Date: February 2011
Creator: Banerjee, Ambarish; Aguiar-Moya, Jose Pablo; Sivaram, Prasad; Smit, Andre de F. & Prozzi, Jorge Alberto
Description: "The efforts of 0-6275 were primarily twofold. One aspect was geared towards extensive performance monitoring and material testing for better characterization of the experimental sections included as part of 0-5513 as well as new sections that were to be incorporated in the enhanced version of the TFPD. The other aspect of the study was to look into the calibration of the transfer functions in the newly developed MEPDG as well as Texas ME Design procedure being sponsored by TXDOT through the 0-5798 research study. It was understood that an effort to determine reliable bias correction factors would necessitate a large volume of project specific information for a number of pavement sections that are well spread out within the state such that differences in materials, traffic, construction practices and climate are captured. The TFPD supplemented by other databases like the DCIS and the LIMS will ensure that the data needs for the calibration exercise are met and fulfilled to the extent possible. When time series data were not available, the researchers utilized relevant data from the FHWA's Long Term Pavement Performance Studies (LTPP). This interim report summarizes the activities performed during the first 7 months of the project, when the current ...
Contributing Partner: UNT Libraries Government Documents Department
Laboratory and field evaluations of external sulfate attack in concrete

Laboratory and field evaluations of external sulfate attack in concrete

Date: January 2011
Creator: Drimalas, Thanos; Clement, John C.; Folliard, Kevin J.; Dhole, Raj & Thomas, Michael D. A.
Description: "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."
Contributing Partner: UNT Libraries Government Documents Department
Equipment replacement optimization

Equipment replacement optimization

Date: October 2011
Creator: Fan, Wei; Brown, Leonard; Patterson, Casey; Winkler, Mike; Schminkey, Justin; Western, Kevin et al.
Description: "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."
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Peer state assessment of TxDOT maintenance program and practices:  workshop and road rally findings

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

Date: January 2011
Creator: Gao, Lu; Chi, Seokho; Prozzi, Jorge Alberto; Yildirim, Yetkin; Zhang, Zhanmin; Centurion, Claudia et al.
Description: "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."
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Literature review of current practices in dealing with fluctuations of maintenance budgets

Literature review of current practices in dealing with fluctuations of maintenance budgets

Date: September 2011
Creator: Gonzales, Epigmenio.; Li, Wenxing; Murphy, Mike; O'Connor, James T.; Bhat, Chandra R. & Yildirim, Yetkin
Description: "A literature review was conducted to investigate current budget cutting strategies used in routine roadway maintenance planning, including methods and techniques that are employed by other state and international transportation organizations (DOT's). Methods that quantify impact and increased risk factors from the reduction of routine maintenance activities were investigated. Methods developed based upon previous research were tabulated and evaluated by objective criteria such as cost savings, resource savings, and road user/stakeholder satisfaction. The researchers reviewed the data and identified the most effective risk analysis techniques, which served as the basis for the maintenance risk modeling under this project."
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Megaregion freight planning : a synopsis

Megaregion freight planning : a synopsis

Date: March 2012
Creator: Harrison, Rob.; Johnson, Donovan & Loftus-Otway, Lisa
Description: "Megaregion interest has grown strongly in the last decade and is now seen be a growing number of planners as offering effective contributions to problems such as modal congestion, development disparity, and air pollution that individual metropolitan areas or cities cannot resolve individually. Megaregion planning presents an alternative way of mitigating metropolitan problems of large-scale transportation systems, green infrastructure, and economic development and has attracted a number of transportation advocates since 2000."
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Implementing a project and portfolio management system for TxDOT project development

Implementing a project and portfolio management system for TxDOT project development

Date: October 2011
Creator: Khwaja, Nabeel
Description: "Beginning in the summer of 1999, Texas Department of Transportation (TxDOT) started developing the framework for implementing a sophisticated new system to manage its large and diverse portfolio of projects during their development phase. This was followed by the implementation itself for managing project schedules, project and portfolio resources and costs during their development cycle. This unique and challenging implementation across TxDOT encompassed all functional areas involved in the project development phase. It was successfully completed by overcoming technical, technological, and cultural challenges inherent with any implementation of this scale and magnitude."
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Implementing a project and portfolio management system for TxDOT project development

Implementing a project and portfolio management system for TxDOT project development

Date: October 2011
Creator: Khwaja, Nabeel
Description: "Beginning in the summer of 2099, Texas Department of Transportation (TxDOT) started developing the framework for implementing a sophisticated new system to manage its large and divers portfolio of projects during their development phase. This was followed by the implementation itself for managing project schedules, project and portfolio resources and costs during their development cycle. This unique and challenging implementation across TxDOT encompassed all functional areas involved in the project development phase. It was successfully completed by overcoming technical, technological, and cultural challenges inherent with any implementation of this scale and magnitude."
Contributing Partner: UNT Libraries Government Documents Department
Materials selection for concrete overlays : the final report

Materials selection for concrete overlays : the final report

Date: July 2012
Creator: Kim, Dong H.; Fowler, David W.; Ferron, Raissa P.; Trevino, Manuel M. & Whitney, David P.
Description: Concrete overlays have been a rehabilitation method for many years. It has been extensively utilized and studied in other states, but Texas is still at an initial stage of fully implementing the method. The large volume of concrete highways in Texas makes bonded concrete overlays, unbonded concrete overlays, and whitetoppings very viable options. However, there is a lack of educational guidelines for pavement engineers for concrete overlay construction. This research presents the information gathered from literature review, condition survey, and evaluation of existing concrete overlays in Texas. Also, a laboratory research was performed for recommendations for materials selection and construction for concrete overlays. From these, guidelines for materials selection and construction method developed that will assist in future concrete overlays in Texas are presented.
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Materials selection for concrete overlays :  information survey review and evaluation of existing concrete overlays in Texas

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

Date: April 2011
Creator: Kim, Dong Hyun; Trevino, Manuel; Whitney, David P. & Ferron, Raissa
Description: "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."
Contributing Partner: UNT Libraries Government Documents Department
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