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96 report(s) found for Colorado State University
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Roadside barriers are the primary structural safety devices on surface roads. They can be made from any material as long as they can absorb the energy involved in an impact scenario. One material that has that potential is Ipe, which is a hardwood material that has relatively high strength compared with...

 

The objectives of this study were to assess geotechnical properties of mine waste amended with fly ash and evaluate reuse of fly ash amended mine waste as road construction material. Three types of fly ash and one type of cement were used as cementitious binder. Natural and synthetic (i.e., laboratory...

 

This research attempts to answer the following fundamental questions: What factors does a transit agency use to choose among alternative TOD locations in a transit network, and what is the relative importance of each factor? It aims to develop a decision support framework that can be used by different...

 

Concrete bridge decks are directly exposed to daily traffic loads and may experience some surface cracking caused by excessive stress or fatigue accumulation, which requires repair or replacement. Among typical bridges in North America, bridge decks are considered the most expensive component to construct...

 

This report presents an initial investigation of the mechanics of I-beams developed with plastic-aluminum composite technology. Plastic-aluminum composites in structural beam/frame/truss elements are a relatively new concept that has seen little, if any, application in modern construction. This technology...

 

Reinforced concrete (RC) bridges with both skew and curvature are common in areas with complex terrains. Skewed and/or curved bridges were found in existing studies to exhibit more complicated seismic performance than straight bridges, however the related seismic risk studies are still rare. These bridges...

 

For highways located in different counties and cities across the country, specific conditions of weather, terrain, traffic characteristics, highway conditions, population and economic development are all different. Driving environments, traffic accidents and injury risks have strong interactions, which...

 

National Bridge Inspection Standards do not require documenting damage location during an inspection but bridge evaluation provisions highlight the importance of location to determining the structural impact of damage. Capturing damage location information using current inspection and documentation methods...

 

This report evaluates two new glass-fiber reinforced polymer concrete reinforcement systems, which have been designed to serve as a non-corrosive alternative to steel reinforcement in reinforced concrete bridge girders. Due to the nature of the reinforcement geometry, these systems react in a way to...

 

Simple-made-continuous (SMC) steel bridges are a relatively new innovation in steel bridge design. The SMC concept is a viable solution for steel bridges to recover market share of the bridges constructed in the United States. The majority of SMC bridges currently in use are constructed with concrete...

 
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(701)231-7767ndsu.ugpti@ndsu.edu