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Alternative Methods of Flexible Base Compaction Acceptance

Description: "This report summarizes the concerns expressed with the current Texas Department of Transportation(TxDOT) methods, presents approaches some TxDOT districts have taken to overcome problems, and summarizes the current status of other agencies' efforts at mechanistic based acceptance for flexible base. Also this report presents results and findings from a full-scale compaction experiment."
Date: May 2012
Creator: Sebesta, Stephen; Taylor, Ross & Frazier, James
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Evaluation of traffic control devices : year 3

Description: Report summarizing the research activities that were conducted between September 2010 and August 2011. The five primary activities were evaluating nighttime visibility along rural highways with bright signs, continuing the evaluation of lead-free thermoplastic pavement markings, evaluating contrast pavement marking layouts, continuing the evaluation of accelerated pavement marking test decks, and providing district support for hurricane evacuation routing.
Date: March 2012
Creator: Carlson, Paul J.; Pike, Adam M.; Miles, Jeff D.; Ullman, Brooke R. & Borchardt, Darrel W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Rational Use of terminal Achorages in Portland Cement Concrete Pavements

Description: Report describing the results of a study to look at various systems used to protect bridges from expansion of Portland cement concrete (PCC) due to changes in temperatures. It includes background information on the problem, identifies particular bridges that have concerns, a literature review on the topic, results of field experimentation, collection and analysis of data, and conclusions and recommendations, with supplementary references and appendices.
Date: May 2012
Creator: Jaiswal, Harshita; Ryu, Sungwoo; Choi, Pangil; Choi, Seongcheol; Jayawickrama, Priyantha; Senadheera, Sanjaya et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Compendium of student papers: 2011 undergraduate transportation scholars program.

Description: Report compiling the research papers written by students participating in the 2011 Undergraduate Transportation Scholars Program. The papers in this compendium report on the following topics: evaluating the impact of nighttime work zone lighting characteristics n motorists; late night roadway visibility; investigation of the use and pricing of the I-15 express lanes in San Diego; intercity passenger rail access to airports: a case study at the Milwaukee airport; development of a background comp… more
Date: May 2012
Creator: Desorcie, Felicia; Jian, Ruoxin; Kelly, Pete; Larson, Shawn; Rasulo, Marcus; Rivera, Joshua et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Full-depth reclamation : new test procedures and recommended updates to specifications

Description: Rehabilitating an old pavement by pulverizing and stabilizing the existing pavement is a process referred to as Full Depth Reclamation (FDR). The stabilized layer becomes either the base or sub-base of the new pavement structure. This process has been used widely for over 20 years in Texas to strengthen and widen structurally inadequate pavement sections. This project developed guidelines on successful FDR practices, developed training materials, and identified areas where improvements to curre… more
Date: July 2012
Creator: Scullion, Thomas; Sebesta, Stephen; Estakhri, Cindy K.; Harris, Pat; Shon, Chang-Seon; Harvey, Omar et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Develop Mechanistic-Empirical Design for CRCP

Description: This report explains why a mechanistic-empirical (ME) based pavement design method will allow Texas Department of Transportation (TxDOT) to optimize pavement structures to best utilize the limited financial resources available.
Date: May 2012
Creator: Ha, Soojun; Yeon, Jungheum; Choi, Byounghooi; Jung, Youn su; Zollinger, Dan G.; Wimsatt, Andrew James, 1964- et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

HeatWurx patching at two locations in San Antonio

Description: "This report documents the placing, cost, and performance of the HeatWurx pavement patching process, which uses infrared heating to make the pavement soft enough to mill and scarify so that it can be mixed with a rejuvenator and pavement millings to form a patch that stays bonded to the surrounding material."
Date: June 2012
Creator: Freeman, Thomas J. & Epps, Jon A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Alternative Methods of Flexible Base Compaction Acceptance

Description: Partial abstract: "This report presents the results from the second year of research work investigating issues with flexible base acceptance testing within the Texas Department of Transportation (TxDOT).... Based on the findings, this report presents a modified construction specification for flesible base and a draft test procedure for using the [dynamic cone penetrometer (DCP)] for compaction acceptance."
Date: February 2012
Creator: Sebesta, Stephen; Shon, Chang-Seon & Scullion, Tom
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Condition of Texas Pavements: Pavement Management Information Systems Annual Report, 2009-2012

Description: Annual report describing the condition of Texas pavements based on distress ratings and ride quality measurements from the Pavement Management Information System (PMIS) during fiscal years 2009-2012. "This report describes the condition of Texas pavements in Fiscal Year 2012 and during the four-year FY 2009-2012 period, based on analysis of Pavement Management Information System (PMIS) distress ratings and ride quality measurements. The report includes the percentage of lane miles in 'Good' or … more
Date: August 29, 2012
Creator: Texas. Department of Transportation.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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