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Articles 61 - 90 of 139
Full-Text Articles in Civil and Environmental Engineering
Performance Evaluation Of Brass Breakaway Couplings, Joseph G. Putjenter, Scott K. Rosenbaugh, Karla A. Lechtenberg, Ronald K. Faller, Dean L. Sicking, John D. Reid
Performance Evaluation Of Brass Breakaway Couplings, Joseph G. Putjenter, Scott K. Rosenbaugh, Karla A. Lechtenberg, Ronald K. Faller, Dean L. Sicking, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Layer Moduli Of Nebraska Pavements For The New Mechanistic Empirical Pavement Design Guide, Soohyok Im, Yong-Rak Kim, Hoki Ban
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.
Rapid Construction Of Pacific Street Bridge, Kromel E. Hanna, George Morcous, Maher K. Tadros
Rapid Construction Of Pacific Street Bridge, Kromel E. Hanna, George Morcous, Maher K. Tadros
Nebraska Department of Transportation: Research Reports
No abstract provided.
Optimal Design Of Work Zone Median Crossovers, Karen Schurr, Brian R. Garnder, Shashwat Rijal
Optimal Design Of Work Zone Median Crossovers, Karen Schurr, Brian R. Garnder, Shashwat Rijal
Nebraska Department of Transportation: Research Reports
No abstract provided.
Bottom Flange Reinforcement In Nu I-Grinders, George Morcous, Kromel E. Hanna, Maher K. Tadros
Bottom Flange Reinforcement In Nu I-Grinders, George Morcous, Kromel E. Hanna, Maher K. Tadros
Nebraska Department of Transportation: Research Reports
No abstract provided.
Development Of A Low Cost, Energy-Absorbing Bridge Rail, Dean L. Sicking, Robert W. Bielenberg, Ronald K. Faller, Karla A. Lechtenberg, Scott K. Rosenbaugh, John D. Reid
Development Of A Low Cost, Energy-Absorbing Bridge Rail, Dean L. Sicking, Robert W. Bielenberg, Ronald K. Faller, Karla A. Lechtenberg, Scott K. Rosenbaugh, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Development Of Advanced Finite Element Material Models For Cable Barrier Wire Rope, John D. Reid, Karla A. Lechtenberg, Cody S. Stolle
Development Of Advanced Finite Element Material Models For Cable Barrier Wire Rope, John D. Reid, Karla A. Lechtenberg, Cody S. Stolle
Nebraska Department of Transportation: Research Reports
An improved LS-DYNA model of ¾-in. (19-mm) diameter 3x7 wire rope commonly used in roadside cable guardrail installations has been developed. A Belytschko-Schwer beam element was selected along with material *MAT_166. Numerical noise was reduced using part stiffness damping with a coefficient of 2%, and frequency range damping with a coefficient of 12%. The optimum element length based on timestep, accuracy, and computational cost was determined to be between 0.4 and 0.8 in. (10-20 mm). Dynamic component tests were conducted on wire rope to determine material properties. These tests were simulated and the results compared to the physical tests. The …
Load Rating Of Complex Bridges, George Morcous, Kromel E. Hanna, Maher K. Tadros
Load Rating Of Complex Bridges, George Morcous, Kromel E. Hanna, Maher K. Tadros
Nebraska Department of Transportation: Research Reports
No abstract provided.
Design Aids Of Nu I-Grinder Bridges, Kromel Hanna, George Morcous, Maher K. Tadros
Design Aids Of Nu I-Grinder Bridges, Kromel Hanna, George Morcous, Maher K. Tadros
Nebraska Department of Transportation: Research Reports
No abstract provided.
Development Of A Temporary Concrete Barrier To Permanent Concrete Median Barrier Approach Transition, Mitchell J. Wiebelhaus, Karla A. Lechtenberg, Ronald K. Faller, John R. Rohde, Ryan J. Terpsma, Robert W. Bielenberg, Dean L. Sicking, John D. Reid
Development Of A Temporary Concrete Barrier To Permanent Concrete Median Barrier Approach Transition, Mitchell J. Wiebelhaus, Karla A. Lechtenberg, Ronald K. Faller, John R. Rohde, Ryan J. Terpsma, Robert W. Bielenberg, Dean L. Sicking, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Foundation Design For High Tension Cable Guardrails, John R. Rohde, Ryan J. Terpsma, Ling Zhu
Foundation Design For High Tension Cable Guardrails, John R. Rohde, Ryan J. Terpsma, Ling Zhu
Nebraska Department of Transportation: Research Reports
No abstract provided.
Offset Right-Turn Lanes For Improved Intersection Sight Distance, Karen Schurr, Timothy J. Foss Jr.
Offset Right-Turn Lanes For Improved Intersection Sight Distance, Karen Schurr, Timothy J. Foss Jr.
Nebraska Department of Transportation: Research Reports
No abstract provided.
Safety And Driver Behavior Studies At Multiple Lane Approaches To Stop-Controlled Intersections, Karen Schurr, Daniel Sitorius
Safety And Driver Behavior Studies At Multiple Lane Approaches To Stop-Controlled Intersections, Karen Schurr, Daniel Sitorius
Nebraska Department of Transportation: Research Reports
Multiple-lane approaches (MLAs) controlled by stop signs are becoming increasingly common in Nebraska. Installation of MLAs occurs when a single approach lane can no longer adequately serve the minor road traffic volume, and a signal is unwarranted because Manual of Uniform Traffic Control Devices (MUTCD) warrants are not satisfied (7, FHWA, 2003). A common example of a location at which MLA stop-controlled intersections can occur in Nebraska is the rural intersection of two state or federal highways. Forty such intersections in Nebraska were available for study in this research. Additionally, such intersections are often located in suburban areas of Nebraska …
Development And Evaluation Of The Midwest Guardrail System Placed Adjacent To A 2:1 Fill Slope, Mitchell J. Wiebelhaus, Ronald K. Faller, Robert W. Bielenberg, John R. Rohde, Karla A. Lechtenberg, Dean L. Sicking, Gopi Dey, John D. Reid
Development And Evaluation Of The Midwest Guardrail System Placed Adjacent To A 2:1 Fill Slope, Mitchell J. Wiebelhaus, Ronald K. Faller, Robert W. Bielenberg, John R. Rohde, Karla A. Lechtenberg, Dean L. Sicking, Gopi Dey, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Development And Evaluation Of The Midwest Guardrail System (Mgs) Placed Adjacent To A 2:1 Fill Slope, Mitchell J. Wiebelhaus, Ronald K. Faller, Karla A. Lechtenberg, Dean L. Sicking, Robert W. Bielenberg, John R. Rohde, John D. Reid, Gopi Dey
Development And Evaluation Of The Midwest Guardrail System (Mgs) Placed Adjacent To A 2:1 Fill Slope, Mitchell J. Wiebelhaus, Ronald K. Faller, Karla A. Lechtenberg, Dean L. Sicking, Robert W. Bielenberg, John R. Rohde, John D. Reid, Gopi Dey
Nebraska Department of Transportation: Research Reports
No abstract provided.
Infrared Thermography-Driven Flaw Detection And Evaluation Of Hot Mix Asphalt Pavements, Yong K. Cho, Thaddaeus Bode, Yong-Rak Kim
Infrared Thermography-Driven Flaw Detection And Evaluation Of Hot Mix Asphalt Pavements, Yong K. Cho, Thaddaeus Bode, Yong-Rak Kim
Nebraska Department of Transportation: Research Reports
No abstract provided.
Infrared Thermography-Driven Flaw Detection And Evaluation Of Hot Mix Asphalt Pavements, Yong K. Cho, Yong-Rak Kim, Thaddaeus Bode
Infrared Thermography-Driven Flaw Detection And Evaluation Of Hot Mix Asphalt Pavements, Yong K. Cho, Yong-Rak Kim, Thaddaeus Bode
Nebraska Department of Transportation: Research Reports
This research was conducted to study more realistic explanations of how variables are created and dealt with during hot mix asphalt (HMA) paving construction. Several paving projects across the state of Nebraska have been visited where sensory devices were used to test how the selected variables contribute to temperature differentials including density, moisture content within the asphalt, material surface temperature, internal temperature, wind speed, haul time, and equipment type. Areas of high temperature differentials are identified using an infrared camera whose usefulness was initially confirmed with a penetrating thermometer. A non-nuclear density device was also used to record how the …
Effects Of Aggregate Angularity On Mix Design Characteristics And Pavement Performance, Leonardo T. Souza, Yong-Rak Kim
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
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
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
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.
Performance Limits For 6-In. High Curbs Placed In Advance Of The Mgs Using Mash Vehicles Part:Ii Full-Scale Crash Testing, Karla A. Lechtenberg, Ronald K. Faller, Dean L. Sicking, Robert W. Bielenberg M.S.C.E., E.I.T., Jeffery C. Thiele, John D. Reid
Performance Limits For 6-In. High Curbs Placed In Advance Of The Mgs Using Mash Vehicles Part:Ii Full-Scale Crash Testing, Karla A. Lechtenberg, Ronald K. Faller, Dean L. Sicking, Robert W. Bielenberg M.S.C.E., E.I.T., Jeffery C. Thiele, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Behavior And Design Of Buried Concrete Pipes Phase Ii, Ece Erdogmus, Maher K. Tadros
Behavior And Design Of Buried Concrete Pipes Phase Ii, Ece Erdogmus, Maher K. Tadros
Nebraska Department of Transportation: Research Reports
No abstract provided.
Termination And Anchorage Of Temporary Concrete Barriers, Scott Rosenbaugh, Robert W. Bielenberg, Ronald K. Faller, John R. Rohde, Dean L. Sicking, Karla A. Lechtenberg, James C. Holloway M.S.C.E., E.I.T., John D. Reid
Termination And Anchorage Of Temporary Concrete Barriers, Scott Rosenbaugh, Robert W. Bielenberg, Ronald K. Faller, John R. Rohde, Dean L. Sicking, Karla A. Lechtenberg, James C. Holloway M.S.C.E., E.I.T., John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Investigation And Mitigation Of Driver Confusion At Modern Roundabouts, Aemal Khattak, Gregory Mcknight, Karen Schurr, Ram R. Bishu
Investigation And Mitigation Of Driver Confusion At Modern Roundabouts, Aemal Khattak, Gregory Mcknight, Karen Schurr, Ram R. Bishu
Nebraska Department of Transportation: Research Reports
Construction of modern roundabouts in place of traditional four-legged intersections is becoming common in the United States. Roundabout negotiation can be confusing for drivers who are not familiar with their use. This research was carried out to identify roundabout elements that play a role in incorrect roundabout negotiation, ascertain driver characteristics prominent in incorrect roundabout negotiation, assess the relative potential for incorrect negotiation amongst different groups of drivers, and suggest measures for improving drivers’ abilities to negotiate roundabouts. Potential for incorrect roundabout negotiation was measured by asking questions in a survey questionnaire related to rules of roundabout negotiation and the …
Development Of Field Data For Effective Implementation Of Mechanistic Empirical Pavement Design Procedure, Atorod Azizinamini, Nima Ala, Mohammad Ajmal Stanigzai
Development Of Field Data For Effective Implementation Of Mechanistic Empirical Pavement Design Procedure, Atorod Azizinamini, Nima Ala, Mohammad Ajmal Stanigzai
Nebraska Department of Transportation: Research Reports
No abstract provided.
Nondestructive Method To Detect Corrosion Of Steel Elements In Concrete, Saeed Javidi Niroumand, Aaron Jon Yakel, Atorod Azizinamini, Marcelo Dasilva
Nondestructive Method To Detect Corrosion Of Steel Elements In Concrete, Saeed Javidi Niroumand, Aaron Jon Yakel, Atorod Azizinamini, Marcelo Dasilva
Nebraska Department of Transportation: Research Reports
No abstract provided.
Cable Median Barrier Guidelines, Dean L. Sicking, Karla A. Lechtenberg, Francisco Daniel Benicio De Albuquerque
Cable Median Barrier Guidelines, Dean L. Sicking, Karla A. Lechtenberg, Francisco Daniel Benicio De Albuquerque
Nebraska Department of Transportation: Research Reports
No abstract provided.
Approach Slope For Midwest Guardrail System, Erin A. Johnson, Karla A. Lechtenberg, Dean L. Sicking, Robert W. Bielenberg M.S.C.E., E.I.T., Ronald K. Faller, John R. Rohde, John D. Reid
Approach Slope For Midwest Guardrail System, Erin A. Johnson, Karla A. Lechtenberg, Dean L. Sicking, Robert W. Bielenberg M.S.C.E., E.I.T., Ronald K. Faller, John R. Rohde, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.
Performance Evaluation Of Safety Grates For Cross-Drainage Culverts, Karla A. Polivka, Dean L. Sicking, Robert W. Bielenberg, John R. Rohde, Ronald K. Faller, John D. Reid
Performance Evaluation Of Safety Grates For Cross-Drainage Culverts, Karla A. Polivka, Dean L. Sicking, Robert W. Bielenberg, John R. Rohde, Ronald K. Faller, John D. Reid
Nebraska Department of Transportation: Research Reports
No abstract provided.