1999 ... Carl Haas, José wiessmann, and Tom Groll · This report presents information regarding currently available mechanical scour-monitoring systems. It also contains documentation of a prioritization model designed to be easily implemented by TxDOT. The prioritization model uses data contained in the BRINSAP database as input
3970-1 [CTR] ... TX-00/0-3970-1
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1999 ... Michael T. McNerney and Brian J. Landsberger · This project will provide the Texas Department of Transportation (TxDOT) with information about the effects of the current cost-effectiveness criterion. The project has reviewed (1) the cost-effectiveness criteria used by other states, (2) the noise barrier construction history of
3965-1 [CTR] ... TX-99/3965-1
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2004 ... Yetkin Yildirim, Thomas W. Kennedy and Jorge Prozzi · This report includes the binder designs for the Houston, Laredo, Pharr and Bryan Toner Projects where waste toner was used as an asphalt binder modifier. For each of these projects, a binder design was performed, including blending time, performance grading, storage
3933-01-(P1-P4) [CTR] ... FHWA/TX-04/5-3933-01-P1; Product 5-3933-01 P2; Product 5-3933-01 P3;
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2003 ... Yetkin Yildirim and Thomas W. Kennedy · Every year a big amount of toner is produced for copiers and printers by toner manufacturing companies. Toner, the dry ink used in laser printers and copiers, can be blended in to asphalt to improve strength and temperature resistance properties. Some of the toner does not meet quality
3933-01-IMP-1 [CTR] ... FHWA/TX-03/3933-01-IMP-1
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2003 ... Yetkin Yildirim, Armagan Korkmaz and Jorge Prozzi · Every year a large amount of toner is produced for copiers and printers by toner manufacturing companies. Toner, the dry ink used in laser printers and copiers, can be blended in to asphalt to improve strength and temperature resistance properties. Some of the toner does not
3933-01-2 [CTR] ... FHWA/TX-05/5-3933-01-2
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1997 ... by Mansour Solaimanian, Thomas W. Kennedy and Robert B. McGennis · Every year, a tremendous amount of toner is produced for copiers and printers by toner manufacturing companies throughout the United States. Some of this toner does not meet quality specifications and consequently becomes a waste product of the
3933-1 [CTR] ... TX-97/ 3933-1F
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1998 ... B. Frank McCullough, Dan G. Zollinger and Terrence E. Dossey · This report summarizes 23 years of work undertaken in Texas to understand the reasons for significant performance differences found in pavements placed around the state. To a significant degree, pavement performance can be predicted based on the concrete material
3925-S [CTR] ... TX-98/3925-S ... Project Summary Report
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1998 ... B. Frank McCullough, Dan Zollinger, and Terry Dossey · This report summarizes 23 years of work undertaken in Texas to understand the reasons for significant performance differences found in pavements placed around the state. To a significant degree, pavement performance can be predicted based on the concrete material
3925-1 [CTR] ... TX-01/7-3925-1
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1993 ... Mark A. Euritt · Increased emphasis on energy efficiency and air quality have resulted in a number of state and federal initiatives examining the use of alternative fuels for motor vehicles. Texas' program for alternate fuels includes compressed natural gas (CNG). Based on an analysis of 30-year life-cycle costs, CNG is a cost-
3003-1 [CTR] ... Oil Overcharge Report 3003-1F
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1999 ... Jeffrey Paine · The researchers examined the relationship between three data types -- geologic maps, pavement deflection, and seismic refraction data -- from diverse geologic settings to determine whether geologic maps and seismic data might be used to interpret deflections and assess pavement condition. Deflections
2990-S [CTR] ... TX-00/2990-S ... Project Summary Report
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2002 ... Jeffrey Paine · During training exercises for TxDOT staff, seismic refraction data were acquired at seven sites in six TxDOT districts using the prototype Seismic Refraction Bedrock Analyzer (SRBA). These data were acquired in a variety of settings that included bedrock depths ranging from a few tens of centimeters to more than
2990-01-1 [CTR] ... FHWA/TX-03/ 5-2990-01-1
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2000 ... S.M. Barney [and four others] · Older bridges currently in service can be tested to determine if the bridges behave as originally designed. Many current design methods are overly conservative. This research shows the results of the instrumentation and testing of the Leon River Bridge for its lateral distribution of live load. Tests
2986-4 [CTR] ... 7-2986-4
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1997 ... Michael Martello and Michael T. McNerney · The findings of this report are based on (1) a statistical analysis of data collected in the San Antonio area, (2) a literature review, and (3) expert advice on tropospheric ozone formation. The results of the study suggest that a highway construction work zone with lane closure can
2979-1 F [CTR] ... TX-97/2979-1F
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1997 ... Thomas E. Owen [and six others] · Objectives of the studies were to: (1) determine by quantitative measurements and computer simulation modeling the effectiveness of the noise barriers; (2) determine the traffic noise intrusion through openings in the barriers at streets entering the residential areas; (3) conduct a community
2974-S [CTR] ... TX-99/2974-S ... Project Summary Report
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1997 ... by Michael J. Gilroy and Karl H. Frank · The initially mandated and non-optional use of metric dimensions and designs for new highway construction requires the use of metric dimension fasteners. Even though the ASTM Specifications A325M and A490M for metric high strength bolts have been available for almost 20 years, they have
2958-1 F [CTR] ... TX-97/2958-1F
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2001 ... Michael T. McNerney [and four others] · The effects of traffic noise are a serious concern in the United States and the rest of the world. One significant component of traffic noise is tire/pavement interaction. Protecting individual receivers by reducing pavement noise at the source rather than by using traffic noise barriers may result
2957-3 [CTR] ... 7-2957-3
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2000 ... Michael T. McNerney [and three others] · The effects of traffic noise are a serious concern in the United States and in the rest of the world. One significant component of traffic noise is tire/pavement interaction. Protecting individual receivers by reducing pavement noise at the source rather than by using traffic noise barriers may result
2957-2 [CTR] ... FHWA/TX-7-2957-2
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1999 ... Jeffrey DeMoss, Brian J. Landsberger and Michael T. McNerney · Selection of pavement for noise reduction considerations is becoming a major concern for highway projects in densely populated areas. However the pavements available are designed for durability and safety reasons and not for their acoustic characteristics. The
2957-1 [CTR] ... FHWA/TX-7-2957-1
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1998 ... Michael E. Barrett [and four others] · Concern about the potential impact on the Edwards Aquifer has led to the construction of stormwater controls on highways in the Austin, Texas, area. This study was designed to help the Texas Department of Transportation (TxDOT) identify the types of runoff control systems that are most
2954-3 [CTR] ... TX-99/2954-3F
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1998 ... Patrick M. Walsh [and three others] · Pollutants found in runoff from highways may cause toxic responses in receiving waters for some conditions and, in addition, are obstacles to obtaining water quality goals in the United States. This study investigated the capability of two vegetative controls -- grassed swales and vegetated buffer
2954-2 [CTR] ... FHWA/TX-7-2954-2
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1998 ... Michael V. Keblin [and three others] · This study evaluates the performance of sedimentation/filtration systems that are the most common control for treating highway runoff in the Edwards Aquifer recharge zone. The study includes: 1) monitoring and evaluating the Seton Pond sedimentation/filtration facility in Austin, Texas, and 2)
2954-1 [CTR] ... TX-00/2954-1
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1998 ... Terry Dossey, Tracy Turen, B. Frank McCullough · The rigid pavement (RP) database contains historical distress data obtained from more than 400 continuously reinforced concrete pavements (CRCP) and jointed concrete pavements (JCP) across the state of Texas. Data collection efforts began in 1974 and have been
2952-1 [CTR] ... TX-98/2952-1
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1995 ... Christopher Laughton and Priscilla P. Nelson · This document summarizes the construction and design concepts developed to support the layout and subsurface geotechnical characterization associated with a system of water transport structures planned to provide for drainage of the new 1-35 and Ben White Interchange. The
2949-1 F [CTR] ... TX-96/2949-1F
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1998 ... Leandro Etcheverry [and three others] · Four different cathodic protection systems were installed and evaluated in the reinforced concrete tie beams and footings of four bents at the Queen Isabella Causeway which links South Padre Island to the mainland of Texas. The types of cathodic protection systems installed and
2945-1 [CTR] ... TX-00/2945-1
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2008 ... Brian C. Dahm, Dr. Ned Burns, Dr. Ramón Carrasquillo, Dr. David W. Fowler, David Whitney, Christopher Shoemaker · Final report summarizing the work done on Project 7-2941, “Long-term Behavior of High Performance Concrete (HPC) Bridges.” The purpose of this project was to monitor the long-term performance of
2941-5 [CTR] ... FHWA/TX-08/7-2941-5
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2002 ... David Whitney, Christopher Shoemaker, David W. Fowler · This report summarizes the research conducted during the past year as specified in the Center for Transportation Research Project 7-2941, "Long-Term Behavior of High Performance Concrete Bridges." | In addition to the ongoing monitoring of sites at the Louetta
2941-3 [CTR] ... Report No. 2941-3 Preliminary Review Copy
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1996 ... by Angela Jannini Weissmann · A 1992 report to Congress, pursuant to Intermodal Surface Transportation Efficiency Act (ISTEA) section 1089 and 6015, acknowledges that Texas serves a disproportionate share of the U.S.-Mexico international trade. Accordingly, it recommends the development of federal-aid program options to improve
2940-3 [CTR] ... TX-97/2940-3F
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1996 ... Angela Jannini Weissmann and Rashed Tanvir Islam · A 1992 report to Congress, pursuant to Intermodal Surface Transportation Efficiency Act (ISTEA) sections 1089 and 6015, acknowledges that Texas serves a disproportionate share of U.S-Mexico international trade. It consequently recommends the development of federal-
2940-2 [CTR] ... TX-96/2940-2
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1996 ... Angela Jannini Weissmann and Rashed Islam · A 1992 report to Congress, pursuant to Intermodal Surface Transportation Efficiency Act (ISTEA) sections 1089 and 6015, acknowledges that Texas serves a disproportionate share of the U.S-Mexico international trade, and, accordingly, recommends the development of
2940-1 [CTR] ... TX-96/2940-1
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1995 ... Angela Jannini Weissmann [and three others] · In providing incentives for increased trade among the U.S., Canada, and Mexico, the North American Free Trade Agreement (NAFTA) could considerably liberalize freight carriage across these countries' respective borders. While Texas has a substantial economic interest in the
2932-3 F [CTR] ... TX-96/2932-3F
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1995 ... Angela Jannini Weissman and Robert Harrison · In providing incentives for increased trade among the U.S., Canada, and Mexico, the North American Free Trade Agreement (NAFTA) could considerably liberalize freight carriage across these countries' respective borders. While Texas has a substantial economic interest in this
2932-2 [CTR] ... TXDOT-96/2932-2
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1996 ... Angela Jannini Weissmann · This report documents most of this project's first objective, namely, to update and expand the TRANSBORDER data base. This report discusses all relevant data collected and organized in this project, with the exception of international bridge demand and U.S.-Mexico overland commerce data, which
2932-1 [CTR] ... TX-96/2932-1
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1996 ... Carl Haas [and five others] · Automated pavement crack sealing technology has been developed in the TxDOT- and FHWA-funded project described in this report. Performance of the prototype has been demonstrated, and the economics are attractive. A follow-up implementation and testing project involving field trials across the
2926-1 F [CTR] ... TX-97/2926-1F
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1995 ... C.C. Pilson, W.R. Hudson and V. Anderson · This project was undertaken to assist with the design, planning, and analysis of pavement test sections for future use with the newly developed Texas Mobile Load Simulator. It specifically addresses the type, number, and positions for strain and pressure sensors in test sections.
2921-1 F [CTR] ... TX-96/2921-1F
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1996 ... Michael T. McNerney, Thomas W. Kennedy and William E. Elmore · Given that TxDOT is responsible for over 400 general aviation airports in Texas, the objectives of this project were to analyze current asphalt and base specifications for airport construction, and to modify Texas Department of Transportation (TxDOT) asphalt and base
2920-1 F [CTR] ... TX-96/2920-1F
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1995 ... by Mansour Solaimanian and Thomas W. Kennedy · A research project was undertaken to evaluate the production and construction variability of HMAC containing high quantities of RAP material. Four construction projects were selected for this purpose. Two of the projects used 35 percent RAP material (both type-C mixes),
2918-1 [CTR] ... TX-95+2918-1F
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1999 ... Clyde E. Lee, Darrell W. Borchardt, and Qiyue Fei · This project focuses on the development and evaluation of a Truck Monitoring and Warning (TM&W) system for detecting high, long, fast trucks at freeway-to-freeway connections and activating displays to warn the truck drivers of potential hazards as their vehicles approach
2915-S [CTR] ... TX/00-2915-S ... Project Summary Report
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1999 ... Clyde E. Lee, Darrell W. Borchardt and Qiyue Fei · This research focuses on the development and evaluation of a truck monitoring and warning (TM&W) system for detecting high, long, fast trucks at freeway-to-freeway connections and activating displays to warn the truck drivers of potential hazards as their vehicles approach
2915-1 [CTR] ... TX-00/7-2915-1
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1996 ... by Dennis S. Collier · The project consisted of using the following research methodology: evaluating computer hardware and software procured for the purpose of creating a process-control and data-acquisition system for the Texas Mobile Load Simulator; determining any additional hardware and software needed for the
2912-S [CTR] ... TX-98/2912-S ... Project Summary Report
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1996 ... by Norbert Joseph Delatte Jr. [and four others] · Expedited bonded concrete overlays offer an economical alternative to rehabilitating concrete pavements. The construction of a bonded concrete overlay in El Paso has provided the opportunity to research pavement design, mix design, construction methods, and specification
2911-5 F [CTR] ... TX-97/2911-5F
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1996 ... by Norbert Joseph Delatte Jr., David W. Fowler and B.F. McCullough · For rehabilitation of concrete pavements, resurfacing with a bonded concrete overlay (BCO) may provide significantly longer life and reduced maintenance costs. Two important issues are bonding and rapid reopening of resurfaced sections. The project
2911-4 [CTR] ... TX-98/2911-4
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1995 ... Jeffrey Lance Huddleston, David W. Fowler and B. Frank McCullough · The bonded concrete overlay (BCO) is emerging as a method of pavement repair which minimizes costs and traffic disruption. When existing methods of expedited paving are combined with rapid strength gain concrete, the potential exists to return traffic on to a
2911-3 [CTR] ... TX-96/2911-3
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1995 ... Dawn M. Wade, David W. Fowler and B. Frank McCullough · Plans are currently underway for rehabilitating a heavily traveled section of Interstate Highway 10 in the El Paso, Texas, District. This section of highway is to be repaired using a bonded concrete overlay. This two-year study is investigating pavement design,
2911-2 [CTR] ... TX-95+2911-2
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1995 ... Robert Otto Rasmussen, B. Frank McCullough and Jose' Weissmann · Bonded concrete overlays are increasingly being used to rehabilitate concrete pavements. Among other benefits, bonded concrete overlays (BCO) can reduce life-cycle costs and can expedite construction (thus lowering user costs and delays). Until
2911-1 [CTR] ... TX-95-2911-1
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2003 ... Hsin-Yang Chung, Lance Manuel and Karl H. Frank · A reliability-based procedure for inspection scheduling of steel bridges is proposed to yield the optimal (most economical) inspection strategy that meets an acceptable safety level through the planned service life. Two fatigue reliability formulations that can be applied for most
2135-1 [CTR] ... 0-2135-1
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2001 ... John Walewski, G. Edward Gibson and Jason Jasper · Public agencies across the country are pursuing innovative project delivery methods such as design-build (D-B) and construction manager-at-risk (CM-at-risk) to improve cycle-time performance on projects, and numerous transportation departments are currently using D-B for
2129-1 [CTR] ... FHWA/TX-0-2129-1
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2001 ... David M. Luskin and C. Michael Walton · The North American Free Trade Agreement (NAFTA) calls for harmonization of truck standards among the trade partners. | Combined with the desire of U.S. industry to reduce freight costs, this aspect of NAFTA has stimulated interest in how liberalization of truck size and weight limits in the
2122-1 [CTR] ... FHWA/TX-0-2122-1
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2004 ... Randall J. Charbeneau, Kathryn S. Benson and Jennifer D. Trub · Safety end treatments are installed on new and existing culverts to protect vehicular traffic if the vehicle should leave the roadway. Backwater effects associated with end treatment designs used by the Texas Department of Transportation have not been measured
2109-2 [CTR] ... 0-2109-2
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2002 ... Randall J. Charbeneau [and three others] · Channel improvements involving channel expansion upstream of culverts may result in increased sediment deposition near the structure, which in turn may result in decreased hydraulic performance and safety. These conditions are investigated through physical and numerical modeling. An
2109-1 [CTR] ... FHWA/TX-03/2109-1
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1994 ... ShiFeng Li, Zhanmin Zhang and Terry Dossey · The Texas Department of Transportation (TxDOT) records traffic counts at tends of thousands of locations throughout the state. Such traffic information is crucial to statewide planning, forecasting, and roadway design programs. Moreover, such information is reviewed by the federal
2040-1 [CTR] ... TX-95-2040-1F
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1994 ... by Eric Joseph Ueber, David W. Fowler and Ramón L. Carrasquillo · In order to properly design highway pavements, the Texas Department of Transportation (TxDOT) gathers traffic data with piezoelectric classification sensors. Use of these sensors includes the use of polymer binding materials to install the sensors in the pavement.
2039-2 [CTR] ... TX-95+2039-2F
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1994 ... Eric J. Ueber, David W. Fowler, and Ramón L. Carrasquillo · Proper highway design requires the use of accurate traffic data. Such data are collected by traffic monitoring equipment installed in the road surface. This equipment usually consists of piezoelectric sensors, either 1.8 meters or 3.6 meters long (6 or 12 feet long),
2039-1 [CTR] ... TX-95+2039-1
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