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22 report(s) found with labor in the keywords field
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Longitudinal joints in Portland Cement Concrete (PCC) pavement slabs require tie (dowel) bars to control joint opening resulting from thermal stresses. Inspections of PCC pavements by the South Dakota Department of Transportation using ground penetrating radar revealed that it is common for tie bars...

 

To improve the pavement design and construction in Wyoming, the Wyoming Department of Transportation (WYDOT) is adopting the Mechanistic-Empirical Pavement Design Guide (MEPDG). A full implementation of MEPDG requires the characterization of local crushed base materials. In this research, laboratory...

 

Many laboratory studies have shown erratic flexural strength results among replicate specimens of fiber reinforced concrete (FRC). As a result, repeatability of results was very challenging. Given this issue, it would be very difficult for design engineers to make reliable claims about the performance...

 

The purpose of the initial project was to establish a baseline for the evaluation of proposed fatigue mitigation efforts, to demonstrate the utilization of measures of sleep and fatigue, and to gather initial data for comparison to other previous studies. Results demonstrated that there was enough data...

 

Concrete infrastructures in cold areas such as South Dakota tend to experience early deterioration that is mostly triggered by steel corrosion. The corrosion is initiated by chloride penetration through cracks in the concrete. Fiber reinforced concrete (FRC) is known to be a good alternative to conventional...

 

As America's transportation workforce continues to age, there is an increased need to invest in workforce development to combat the impending retirement tsunami. This is especially true within the small urban and rural transit industry. A national survey of rural transit managers was conducted to determine...

 

This paper outlines historical circumstances, changes to labor law and negotiations between unions and railroads that have led to reductions in train crews. The author suggests that, in the wake of a fatal Amtrak derailment in Philadelphia, Amtrak and commuter passenger authorities should err on the...

 

For more than a decade, the Bureau of Labor Statistics has cited "railroad operations" as one of the best-paying careers for high school graduates. The author suggests economic circumstances that have kept railroads profitable and a legal environment that favors predictability and limits conflict with...

 

Over the years, Fiber Reinforced Polymer (FRP) composites have gained popularity in transportation infrastructure as a material able to restore and increase the capacity of existing concrete elements. Properties such as a high strength to weight ratio, non-corrosive nature, durability, and high malleability...

 

Students at three institutions of higher learning in the upper Midwest were surveyed to identify attitudes and behaviors that impact their choice of academic major, internship, and career, as well as perceptions of internships and careers in public transportation, and use of job search methods. Fifteen...

 
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