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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: Research report (Austin, Tex.)
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
Pavement repair strategies for selected distresses in FM roadways

Pavement repair strategies for selected distresses in FM roadways

Date: June 2012
Creator: Dessouky, Samer; Oh, Jeong Ho; Yang, Mijia; Ilias,Mohammad; Lee, Sang Ick; Freeman, Tom et al.
Description: "Expansive soil is considered one of the most common causes of pavement distresses in FM roadways. Depending upon the moisture level, expansive soils will experience changes in volume due to moisture fluctuations from seasonal variations. The objective of this research was to evaluate existing repair projects on selected FM roadways. Those roadways experienced failures in the form of fatigue and rutting in the wheel path, and longitudinal (faulted) cracking including edge cracking. The causes of those failures were mainly linked to high PI expansive soil and narrow pavement."
Contributing Partner: UNT Libraries Government Documents Department
Performance of lap splices in large-scale column specimens affectedby ASR and/or DEF

Performance of lap splices in large-scale column specimens affectedby ASR and/or DEF

Date: June 2012
Creator: Bracci, Joseph M.; Gardoni, Paolo; Eck, Kathleen M. & Trejo, David
Description: "This research program conducted a large experimental program, which consisted of the design, construction, curing, deterioration, and structural load testing of 16 large-scale column specimens with a critical lap splice region, and then compared and calibrated models developed in the analytical program with the experimental behavior. Specimens were carefully instrumented both internally and externally to monitor the strain behavior of the concrete and reinforcing steel from specimen construction, curing, deterioration, and final structural load testing."
Contributing Partner: UNT Libraries Government Documents Department
Texas flexible pavements and overlays.  Year 1 report,  Test sections, data collection, analyses, and data storage system

Texas flexible pavements and overlays. Year 1 report, Test sections, data collection, analyses, and data storage system

Date: June 2012
Creator: Walubita, Lubinda F.; Das, Gautam; Espinoza, Elida; Oh, Jeongho; Lee, Sang Ick; Scullion, Tom et al.
Description: "This report provides a documentation of the work completed in Year 1 of the project including the following: 1) Literature review; 2) development of data collection and analysis plans, and 3) field test sections."
Contributing Partner: UNT Libraries Government Documents Department
Recommendations for design, construction, and maintenance of bridge approach slabs

Recommendations for design, construction, and maintenance of bridge approach slabs

Date: May 2012
Creator: Puppala, Anand J.; Archeewa, Ekarut; Saride, Sireesh; Hoyos, Laureano R., 1972- & Nazarian, Soheil, 1955-
Description: Report regarding treatment methods for controlling settlements of approach slabs of new bridge construction. The report is presented in two parts, with the first part concerns the compiling and presentation of documented information while the second part deals with field evaluation of methods to reduce settlement.
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
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; Sebesta, Stephen & Scullion, Tom
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
Best practice for using RAS in HMA

Best practice for using RAS in HMA

Date: October 2011
Creator: Zhou, Fujie.; Button, Joe W. & Epps, Jon
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
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.; Parkar, Anagha S. & Hueste, Mary Beth D.
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
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