Jeudi, 19 Septembre, 2019 - 16:00
The University Transportation Center at Utah State University sponsors research through the Federal Highway Administration’s University Transportation Center Program. The purpose of this research is to advance technology and expertise in transportation-related fields. This includes research on the best methods to design, monitor, and inspect bridges. When...
Jeudi, 19 Septembre, 2019 - 16:00
Public–private partnerships (P3s) can provide solutions to the project delivery challenges faced by state departments of transportation (DOTs) and local transportation agencies in delivering surface transportation infrastructure by aligning risks and rewards between public and private sectors, accelerating project delivery, improving operations and asset...
Jeudi, 19 Septembre, 2019 - 16:00
Road trauma in regional and remote areas of Australia and New Zealand are a major road safety problem. Drivers and riders in regional and remote areas are at an unacceptably greater risk of road deaths and injuries than those living in major cities. This edition of the Austroads Guide to Road Safety Part 5: Road Safety for Rural and Remote Areas provides...
Jeudi, 19 Septembre, 2019 - 15:45
Wood guardrail posts can be inspected for decay using a non-destructive testing (NDT) technique called stress wave timing (SWT). This project conducted a field investigation on approximately 500 wood guardrail posts using SWT and then analyzed available data to determine factors that may lead to increased wood decay rates. It was determined that locations with...
Jeudi, 19 Septembre, 2019 - 15:45
This study intended to provide quantitative evaluation of the use of RAP and RCA as base layers in HMA pavements. The study used field and laboratory testing programs and data from WisDOT PIF database quantify the performance of base materials and test sections on pavements with CA, RCA, and RAP base layers. Analysis of the particle size distributions for the...
Jeudi, 19 Septembre, 2019 - 15:45
Innovative intersections and interchanges have proliferated in the State of Utah over the past several years. Continuous flow intersections and diverging diamond interchanges seem to offer improved traffic performance and safety due to their innovative designs. However, there are no clearly defined guidelines or methodologies for monitoring and measuring their...
Jeudi, 19 Septembre, 2019 - 15:45
A revised and updated version of Design, Construction, and Performance of Heavy-Duty Mixes (QIP-123), originally published by the National Asphalt Pavement Association in 2002.Heavy duty mixes are needed in any pavement structure subjected to severe loading conditions as evidenced by the number and weight of heavy loads, heavy static loads, and/or high tire...
Jeudi, 19 Septembre, 2019 - 15:45
Post-tensioning has evolved to become the construction method of choice for many large structures, including bridges. However, instances of corrosion-induced fracture of wires and strands and resultant tendon failures have occurred as a consequence of either chemically or physically deficient grout (or a combination of these), where the former involves elevated...
Jeudi, 19 Septembre, 2019 - 15:45
Post-installed reinforcement is used to connect a new concrete member to an existing concrete structure. Typically, uncoated rebar post-installed with a chemical adhesive is used in these applications, which may lead to corrosion. Departments of Transportation and local bridge owners have used and continue to use epoxy-coated rebar in post-installed...
Jeudi, 19 Septembre, 2019 - 15:30
Under this investigation, researchers conducted a search for literature relevant to pavement design and asphalt mixture design of Low Volume Roads (LVRs). This investigation was complemented with a web-based survey submitted to state agencies and industry in an attempt to answer some questions that many practitioners may have related to the state-of-the-...
Mercredi, 28 Août, 2019 - 19:15
Advanced connected and automated vehicle (CAV) technologies can be utilized to achieve precise vehicle trajectory control and render unprecedented opportunities to improve transportation system performance in safety, mobility and sustainability. However, it is quite challenging to fully realize these advantages from CAV in mixed traffic environment due to...
Mercredi, 28 Août, 2019 - 19:15
Scour at bridge substructure units can cause undermining of footings and exposure of piles, which can lead to bridge failure. Monitoring of the streambed elevations around a scour critical bridge to identify whether or not scour is occurring during a high-flow event is critical. Working on or near the water may be dangerous during these events. The study...
