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 Serial/Series Title: Research report (Austin, Tex.)
 Collection: Texas State Publications
Analysis of roadway departure crashes on two-lane rural roads in Texas

Analysis of roadway departure crashes on two-lane rural roads in Texas

Date: September 2011
Creator: Lord, Dominique; Brewer, Marcus A.; Fitzpatrick, Kay; Greedipally, Srinivas R. & Peng, Yichuan
Description: "This three-year research effort was undertaken to identify factors that influence the number and severity of roadway departure crashes on rural two-lane highways in Texas and provide engineering countermeasures to reduce this type of crash. The study objectives were accomplished by analyzing crash, traffic flow, and geometric data between 2003 and 2008 and conducting site visits at 20 sites having the highest crash rates at four TxDOT districts."
Contributing Partner: UNT Libraries Government Documents Department
Best practice for using RAS in HMA

Best practice for using RAS in HMA

Date: October 2011
Creator: Zhou, Fujie.
Description: "The use of recycles asphalt shingles (RAS) in hot-mix asphalt (HMA) mixtures has the potential to significantly reduce the cost of asphalt paving mixes while conserving energy and preserving the environment. This report documents the best practices for the use of RAS in HMA in terms of Ras processing, characterizing the processed RAS (binder content,gradations, and performance grad [PG]), RAS mix design, production, and field construction."
Contributing Partner: UNT Libraries Government Documents Department
Catalog of effective treatments to improve driver and worker safety at short-term work zones

Catalog of effective treatments to improve driver and worker safety at short-term work zones

Date: January 2001
Creator: Fontaine, Michael D. & Hawkins, H. Gene
Description: "This report catalogs several devices that were found to be effective at improving driver and worker safety at short-term work zones. The services include are: fluorescent yellow-green worker vests and hard hat covers, portable variable message signs, speed display trailers, fluorescent orange roll-up signs, radar drones, and retroreflective magnetic strips for work vehicles. The catalog provides a brief description of each treatment, along with a summary of the treatment's effectiveness, and recommendations for its use at short-term work zones."
Contributing Partner: UNT Libraries Government Documents Department
Continuous prestressed concrete girder bridges. Volume 1, Literature review and preliminary designs

Continuous prestressed concrete girder bridges. Volume 1, Literature review and preliminary designs

Date: October 2011
Creator: Mander, John B.
Description: "The Texas Department of Transportation (TxDOT) is currently designing typical highway bridge structures as simply supported using standard precast, pretension-ed girders. TxDOT is interested in developing additional economical design alternatives for longer span bridges, through the use of the continuous precast, pretension-ed concrete bridge structures that use spliced girder technology. The objectives of this portion of the study are to evaluate the current stat-of-the-art and practice relevant to continuous precast concrete girder bridges and recommend suitable continuity connections for use with typical Texas bridge girders."
Contributing Partner: UNT Libraries Government Documents Department
Determination of minimum height and lateral design load for MASH test level 4 bridge rails

Determination of minimum height and lateral design load for MASH test level 4 bridge rails

Date: October 2011
Creator: Bligh, Roger P.; Menges, Wanda L. & Sheikh, Nauman Mansoor
Description: "This research had the objectives of determining the minimum rail height and lateral design impact load for MASH test level 4 bridge rails. Using parametric finite element analysis and subsequent crash testing, the researchers determined the minimum recommended rail height for MASH TL-4 impact conditions to be 36 inches. Later Design impact for MASH TL-4 test conditions was determined to be 80 kips."
Contributing Partner: UNT Libraries Government Documents Department
Developing a mixture design specification for flexible base construction

Developing a mixture design specification for flexible base construction

Date: October 2011
Creator: Epps, Jon A.
Description: "In the Texas Department of Transportation (TxDOT), flexible base producers typically generate large stockpiles of material exclusively for TxDOT projects. This large "state-only" inventory often maintained by producers, along with time requirements for testing and reduced manpower within TxDOT offices, resulted in this project's investigation into a mixture-design specification for flexible base. The goals of this project are to develop a flexible base specification that reduces TxDOT's burden for sampling and testing, reduces time and space burdens on producers for maintaining TxDOT-only stockpiles, and maintains or improves the quality of the base."
Contributing Partner: UNT Libraries Government Documents Department
Evaluation, presentation and repair of microbial acid-produced attack of concrete

Evaluation, presentation and repair of microbial acid-produced attack of concrete

Date: October 2011
Creator: Hu, Jiong
Description: This report evaluates the severity of the deterioration in bridges to determine if microbial induced deterioration (MID) is a significant contributor by visual inspection and a number of tests on twelve selected columns. This report also evaluates the effectiveness of suggested test procedures on identifying microbial attack on concrete and the integrity of deteriorated concrete due to the attack.
Contributing Partner: UNT Libraries Government Documents Department
Fatigue failure and cracking in high mast poles

Fatigue failure and cracking in high mast poles

Date: March 2012
Creator: Goyal, Raka; Dhonde, Hemant B. & Dawood, Mina
Description: "This report presents the findings of a comprehensive research project to investigate the fatigue cracking and failure of galvanized high mast illumination poles (HMIP)."
Contributing Partner: UNT Libraries Government Documents Department
HeatWurx patching at two locations in San Antonio

HeatWurx patching at two locations in San Antonio

Date: June 2012
Creator: Freeman, Thomas J. & Epps, Jon A.
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."
Contributing Partner: UNT Libraries Government Documents Department
Implementation of technology for rapid field detection of sulfate and organic content in soils

Implementation of technology for rapid field detection of sulfate and organic content in soils

Date: March 2012
Creator: Shon, Chang-Seon
Description: This report discusses a protocol using the Veris 3150 for determination of sulfate-rich soils, which has been implemented to two full-scale projects in Dallas and Paris Districts.
Contributing Partner: UNT Libraries Government Documents Department
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