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Full-Text Articles in Engineering
Revised Load Rating Procedures For Deteriorated Prestressed Concrete Beams, Alex Stripsky, Sergio F. Brena, Jessica Boakye, Scott A. Civjan, Simos Gerasimidis
Revised Load Rating Procedures For Deteriorated Prestressed Concrete Beams, Alex Stripsky, Sergio F. Brena, Jessica Boakye, Scott A. Civjan, Simos Gerasimidis
Structural Engineering and Mechanics Research Reports
The first prestressed concrete bridge in the United States was built in the early 1950s. Since then, several typical sections have been developed for use in bridge construction including I-beams, deck slabs, box beams, double tees, etc. In bridges under aggressive environments, corrosion deterioration of prestressing strands and stirrups has occurred creating challenges associated with determining the strength of deteriorated existing bridge sections. The MassDOT LRFD Bridge Manual includes provisions to estimate strength of corrosion deteriorated prestressed concrete box beams allowing engineers to calculate the load rating of these types of bridges. The provisions are based on the observed condition …
Ultra-High-Performance Concrete Reinforced With Multi-Scale Hybrid Fibers And Its Durability-Related Properties, Jianqiang Wei, Sergio Brena, Cameron Ritchie, Hitesh Bhaskar More
Ultra-High-Performance Concrete Reinforced With Multi-Scale Hybrid Fibers And Its Durability-Related Properties, Jianqiang Wei, Sergio Brena, Cameron Ritchie, Hitesh Bhaskar More
Structural Engineering and Mechanics Research Reports
Due to its excellent mechanical properties, dense microstructure, low permeability, ease of placement and volume stability, ultra-high performance concrete (UHPC) is considered the next-generation structural concrete and is increasingly used in transportation infrastructure. While previous research efforts generated valuable results, to achieve the desired performance, UHPC needs to be well formulated with precise and optimized quantities of cementitious materials, fillers, fine aggregate, water, chemical admixtures, and fibers. In addition, the mixture design of UHPC and its correlation with the performance evolution under different curing conditions remain unclear, and there exist critical significant gaps in understanding the efficiency of fibers and …
Thermal Efficacy Of Green Walls In Building Structures In The Northeast United States, Nathaniel Wright
Thermal Efficacy Of Green Walls In Building Structures In The Northeast United States, Nathaniel Wright
Student Showcase
Climate change is one of the most threatening issues that humankind faces in the 21st century and there is indisputable evidence that our planet is experiencing global temperature rise, shrinking of ice sheets and sea level rise, warming oceans, and extreme weather events at an alarming rate. Urbanization drives these changes and creates the Urban Heat Island (UHI) effect. One method to mitigate this issue is urban greening, specifically the construction of green walls which take advantage of unused vertical exteriors of buildings. Despite existing literature on green walls especially in Europe and Asia, green walls must be researched more …