Transportation Engineering Commons^™

Evaluation Of The Performance And Cost-Effectiveness Of Engineered Cementitious Composites (Ecc) Produced From Region 6 Local Materials, Gabriel Andres Arce Amador, Tyson Rupnow, Marwa Hassan

Publications

The project objective is to develop cost-effective Engineered Cementitious Composites (ECC) with locally available ingredients in Region 6 to address the deficiencies observed in ordinary concrete materials. The study explored the utilization of two types of river sands (coarse and fine), two types of PVA fibers (long and short), four levels of cement replacement with Class F fly ash, and the implementation of recycled crumb rubber in the performance of ECC materials. A total of 24 mix designs were prepared and evaluated in compression, tension, and bending to assess its mechanical properties. Furthermore, the cracking characteristics of the materials produced …

Understanding Asphalt Concrete Aging Using Nanoindentation, Hasan M. Faisal

Civil Engineering ETDs

Asphalt concrete (AC) is created by mixing liquid asphalt binder with solid aggregates. When asphalt binder is mixed with aggregates, it creates a thin film (about 7-16 microns thick) around the aggregate surface. Fine aggregate (smaller than 0.075 mm size) get entrapped within the binder film or mixed with the binder, and create a phase called mastic. Both asphalt film and mastic play significant roles in aging of asphalt pavement. To this day, tests were performed mainly on the bulk liquid asphalt, but not on the film or mastic. In this study, for the first time, nanoindentation tests were done …

New Mixture Additives For Sustainable Bituminous Pavements, Gabriel Mukristu Nsengiyumva, Kommidi Santosh, Yong-Rak Kim, Helan Xu, Yiqi Yang

Nebraska Department of Transportation: Research Reports

In an effort to improve mechanical properties of asphalt concrete, an exploratory research using mixture additives was attempted. Two different types of additives on two material scales were used: asphalt concrete (AC) level and binder level. At the start of this study, the effect of natural cornhusk fibers on the resistance of two types of AC mixtures on cracking were tested for hot-mix asphalt (HMA) and cold-mix asphalt (CMA). The results showed slight improvements in cracking resistance in cornhusk reinforced HMA, and in the case of the CMA, marshal flow. Overall, based on the test results, cornhusk-reinforced HMA and CMA …

Hot Applied Sealant Bond Test For Joints With Penetrating Sealers, Lieska Halsey

Nebraska Department of Transportation: Research Reports

Recently a concern has been raised for hot applied sealant bond for joints with penetrating sealers. The objective of this study will be to determine if the bond between the sealant and the concrete is compromised by the sealer currently approved to be used in Nebraska. The expected results will be that the bond is not compromised and is serving for the expected joint service life.

Compressive Strength Of Concrete Cylinders By Different Preparation Methods: Sulphur, Neoprene Pads And Grinding, Wally Heyen, Lieska Halsey

Nebraska Department of Transportation: Research Reports

The purpose of this evaluation is to compare the effects of four types of cylinder preparation methods prior to compressive strength testing in accordance to ASTM C 39.

Using Historic Pavement Performance Data To Identify And Select Sites For Asphalt Mixture Design Studies, Allyson Richey

Civil Engineering Undergraduate Honors Theses

Since 1997 Arkansas asphalt mixtures have been designed using a procedure commonly known as ‘Superpave’. In a traditional Superpave mix design, the design considers only traditional volumetric parameters; however, recent advances in mix design technology emphasize mixture’s ability to perform in its environment. There are numerous factors which affect the performance characteristics of an asphalt mix. Certainly, the asphalt binder’s performance is a critical variable in this system. Asphalt binders are sensitive to temperature, so much so that their primary parameter on which they are recommended is a function of both temperature and the geographic latitude in which the pavement …

Design And Evaluation Of Modified Centerline Rumble Strips, Yong-Rak Kim, Tae Sun You, Laurence Rilett

Nebraska Department of Transportation: Research Reports

A centerline rumble strip (CLRS) is primarily installed on the centerline of undivided two-lane and two-way roadways to alert drivers that they are moving out of their intended travel lane. The main purpose of CLRSs is to reduce crossover collisions typically caused by inattentive, distracted, drowsy, or fatigued drivers. Despite the safety benefits, CLRSs that were milled over or adjacent to the centerline joint may increase or accelerate the deterioration and degradation of the pavement structure, which has been observed in Nebraska pavements. In this research project, new (or modified) CLRS designs were sought to reduce pavement damage, while satisfying …

Use Of Recycled Crushed Concrete (Rcc) Fines For Potential Soil Stabilization, Lindeman Mark, Varilek Brandon, Lieska Halsey, Rick Gloe, Maria Olomi

Nebraska Department of Transportation: Research Reports

This study evaluated the use of Recycled Crushed Concrete (RCC) Fines for potential soil stabilization. Soil stabilization is the enhancement of subgrade stability to improve the constructability of successive pavement layers. Use of RCC fines may not only provide less costly alternatives for subgrade stabilization, but their use may also alleviate landfill disposal challenges.

Exploring The Black Space Of Compressive And Shear Modulus, Airam Marlee Morales Vega

Graduate Theses and Dissertations

Uniaxial dynamic modulus is a standard test used to determine the viscoelastic behavior of asphalt pavement materials, with the standard analysis generating a Master Curve. One alternative to the master curve approach is a Black Space diagram, which is a rheological plot that can delineate either dynamic modulus |E*| or shear modulus |G*| vs. phase angle (δ). In this study, four asphalt binders were tested with one aggregate blend. One of these four binders was unmodified and the other three were modified with polymers and acids. Additionally, Polyphosphoric acid (PPA) is compared to the more traditional SBS polymer modification. PPA …

Evaluation Of Poisson’S Ratio Of Asphalt Concrete, Elvis Alexander Castillo Camarena

Graduate Theses and Dissertations

Poisson´s ratio can be defined as the negative ratio of strains perpendicular to the load direction to the strains parallel to the loading direction. If elastic or viscoelastic models are used, Poisson´s ratio, together with elastic modulus, is a main input used to predict distresses in flexible pavement structures such as rutting and cracking. In asphalt concrete, Poisson’s ratio is commonly measured using two different testing configurations: indirect tension (IDT) and uniaxial. However, results from these two testing configuration can potentially have differences. Design methodologies such as the Mechanistic Empirical Design Guide (MEPDG, now PavementME) have been shown to be …

Mitigating Pavement Edge Drop Off, Wayne Jensen, Niles Uerling

Nebraska Department of Transportation: Research Reports

The objective of this research was to investigate and document practices currently being used by the Nebraska Department of Roads (NDOR) districts and other State DOTs to mitigate pavement edge drop off. The NDOR has developed (or borrowed) and is currently incorporating into its standard practices several procedures that significantly decrease the incidence and magnitude of pavement edge-drop off. As these practices become more fully integrated into highway reconstruction projects, pavement edge drop off is expected to decrease dramatically. Localized areas of pavement edge drop off along paved lanes with bare or vegetated shoulders were noted as posing particular problems …

Nebraska Data Collection, Keyvan Zare Rami, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

Automated pavement performance data collection is a method that uses advanced technology to collect detailed road surface distress information at traffic speed. Agencies are driven to use automated survey techniques to enhance or replace their current manual distress survey because of the advantages of objective measurements, safety benefits, and reduced measurement time. As agencies move toward the transition to fully automated data collection methods, there are common concerns regarding how the output of the new method will match the current manual survey ratings and how they will be adopted into the existing Pavement Management System (PMS). This study evaluates the …

Development Of A Semicircular Bend (Scb) Test Method For Performance Testing Of Nebraska Asphalt Mixtures, Gabriel Nsengiyumva, Yong-Rak Kim, Taesun You

Nebraska Department of Transportation: Research Reports

No abstract provided.

Development And Evaluation Of Weak-Post W-Beam Guardrail In Mow Strips, Scott K. Rosenbaugh, Ronald K. Faller, Karla A. Lechtenberg, James C. Holloway

Nebraska Department of Transportation: Research Reports

The objective of this study was to adapt and evaluate a weak-post, W-beam guardrail system for use within mow strips and other pavements. The weak-post guardrail system was originally designed as the MGS bridge rail and has also been adapted for use on culverts. It was envisioned that the weak-post design would absorb the impact forces and prevent damage to the mow strips, thereby minimizing maintenance and repair costs.

Evaluation of the weak posts in mow strips began with three rounds of dynamic bogie testing. Round 1 of bogie testing showed that 4-in. (102-mm) thick concrete would sustain only minor …

Evaluation Of Thin Asphalt Overlay Practice Preserving Nebraska's Asphalt Pavement, Soohyok Im, Yong-Rak Kim, Hamzeh Haghshenas Fatmehsari, Gabriel Nsengiyumva, Taesun You

Nebraska Department of Transportation: Research Reports

No abstract provided.

Pavement Quality Indicators, Connor Villanueva, Wayne Jensen

Nebraska Department of Transportation: Research Reports

No abstract provided.

Optimized Aggregates Gradations For Portland Cement Concrete Mix Designs Evaluation, Wally Heyen, Lieska Halsey, Robert Rea, Mick Syslo

Nebraska Department of Transportation: Research Reports

No abstract provided.

Influence Of Recycled Asphalt Shingles On Asphalt Binder Content, Mixture Stiffness, And Laboratory Rutting Performance, Joshua David King

Graduate Theses and Dissertations

Recycled asphalt shingles (RAS) is a technology in which pavement costs can be reduced significantly and pavement properties may be enhanced. Also, incorporating shingles into pavements reduces the impacts of waste shingles in landfills, preserving our environment. However, for this new technology to be practical for implementation, a better understanding of how the ground shingles affect the properties of the asphalt is necessary. The purpose of this research was to examine the effects of recycled asphalt shingles on asphalt binder content, mixture stiffness, and laboratory rutting performance. For this project, shingles were added to hot mix asphalt mixtures at 2.5, …

Evaluation Of Long-Term Pavement Marking Performance, Eric R. Green, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of the investigation was to evaluate the useful life of pavement markings. The Manual on Uniform Traffic Control Devices (MUTCD) provides general guidelines for the application and installation of pavement markings. However, performance requirements for various types of pavement markings are not included. Retroreflectivity data were collected throughout Kentucky on various longitudinal pavement markings using mobile and manual techniques. Data were collected on one-year, two-year and three-year-old lines. The retroreflectivity levels were analyzed and the several recommendations were made. Minimum levels of retroreflectivity should be set for determining what roads to restripe annually. These values should be lower …

Layer Moduli Of Nebraska Pavements For The New Mechanistic Empirical Pavement Design Guide, Soohyok Im, Yong-Rak Kim, Hoki Ban

Nebraska Department of Transportation: Research Reports

No abstract provided.

Effects Of Aggregate Angularity On Mix Design Characteristics And Pavement Performance, Leonardo T. Souza, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

No abstract provided.

Effects Of Aggregate Angularity On Mix Design Characteristics And Pavement Performance, Yong-Rak Kim, Leonardo T. Souza

Nebraska Department of Transportation: Research Reports

This research targeted two primary purposes: to estimate current aggregate angularity test methods and to evaluate current aggregate angularity requirements in the Nebraska asphalt mixture/pavement specification. To meet the first research objective, various aggregate angularity tests were estimated with the same sets of aggregates and were compared by investigating their characteristics on testing repeatability, cost, testing time, workability, and sensitivity of test results. For the second objective, the effect of aggregate angularity on mixture performance was investigated by conducting laboratory performance tests (the uniaxial static creep test and the indirect tensile fracture energy test) of five mixes designed with different …

Use Of Ground Penetrating Radar For Construction Quality Assurance O Concrete Pavement, George Morcous, Ece Erdogmus

Nebraska Department of Transportation: Research Reports

No abstract provided.

Moisture Sensitivity Of Hot Mix Asphalt Mixtures In Nebraska -- Phase Ii, Ingryd Pinto, Hoki Ban, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

No abstract provided.

Evaluation Of Pavement Marking Performance, Eric R. Green, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of the investigation was to evaluate the useful life of pavement markings. The Manual on Uniform Traffic Control Devices (MUTCD) provides general guidelines for the application and installation of pavement markings. However, performance requirements for various types of pavement markings are not included. Retroreflectivity data were collected throughout Kentucky on various longitudinal pavement markings using mobile and manual techniques. Data were collected on two-year old and one-year old lines. The retroreflectivity levels were analyzed and the several recommendations were made. Minimum levels of retroreflectivity should be set for determining what roads to restripe annually. These values should be …

Research On Fatigue Of Asphalt Mixtures And Pavements In Nebraska, Francisco Thiago S. Aragao, Yong-Rak Kim, Junghun Lee

Nebraska Department of Transportation: Research Reports

No abstract provided.

Cumberland Gap Tunnel Pavement Problem, Brad Rister

Kentucky Transportation Center Research Report

Ground Penetrating Radar was used to verify voids beneath the concrete roadway located at the Cumberland Gap Tunnel, in Middelsboro, KY. Preliminary results indicate that several void areas reside beneath the north and southbound tunnel.

Pavement/Sub-Grade Condition Assessment I-65 Approximate Milepost 97.5 To 102.5 (Transition From Asphalt To Concrete) To (Ky 313 Overpass), Brad Rister, Clark Graves

Kentucky Transportation Center Research Report

This report summarizes the condition assessment of the pavement structure on I-65 between 97.5 to 102.5. Three types of equipment were used to evaluate the present condition of the pavement: falling weight deflectormeter, ground penetrating radar, and coring machine, Results indicated that durability of the existing concrete surface appears to be the most detrimental problem encountered in this survey. Load-transfer across transverse joint appear to be in acceptable ranges. Limited areas were identified to have less than four inches of D.G.A. beneath the concrete pavement. These areas have also been experiencing the most differential settlement. In addition several areas are …

Pavement Design Guide: A Short Course, Kentucky Transportation Center

Kentucky Transportation Center Research Report

The purpose of this short course is to provide information to the registered engineer (with no previous background in pavement design or pavement technology) on the structural design of pavements. Included in this course is a summary of background information on the materials used in pavement construction and on the history and evolution of pavement design. Included with this course is an updated Design Guide or catalog to be used for designing new pavements in Kentucky. The intent of the guide or catalog is to provide the road\\ a) designer with a simplified, straightforward methodology for developing structural designs of …

Summary Of Results Of 1995 Field Evaluations Of Long Life Pavement Marking Materials, Kentucky Transportation Center

Kentucky Transportation Center Research Report

This report completes the summary of the results of data collected as part of the 1995 field and laboratory evaluations of pavement marking materials for the National Transportation Product Evaluation Program (NTPEP). A previous report summarized the data for the first year after placement of these materials (AASHTO's National Transportation Product Evaluation Program, Report 96, NTPEP 121, October 1996). Data for the second year for the long life pavement marking materials are given in this report.