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Full-Text Articles in Engineering
Impact Of Blended Salt Anti-Icers/Deicers On Properties Of Asphalt Binders, Nurudeen A. Abidoye
Impact Of Blended Salt Anti-Icers/Deicers On Properties Of Asphalt Binders, Nurudeen A. Abidoye
Electronic Theses and Dissertations
Anyone who has ever attempted to remove a layer of ice from a roadway or sidewalk by plowing or shoveling knows it is no easy task when the ice is firmly bonded to the asphalt/concrete surface. Winter anti-icing/deicing operations are moral choices that mankind has made to combat winter storms. This research is aimed at evaluating the macro and nano structural impacts of (anti-icing/de-icing) salt on aged and unaged asphalt binders. The macro structural impacts focused on the rheological and creep properties, and the nano structural impacts focused on the surface topography, adhesion force, and modulus of asphalt binders. Rheological …
Current Status Of Design And Construction Of Piles With A Pilot Hole On Rock, Charles C. Crowner
Current Status Of Design And Construction Of Piles With A Pilot Hole On Rock, Charles C. Crowner
Electronic Theses and Dissertations
Driven piles at project sites get their load bearing capacity from side friction along the driven lengths as well as from end resistance. Pilot holes is a pile driving assistance method used to aid driving displacement piles through hard/ dense layers and rock. These pilot holes can be a size smaller or larger than the pile that is to be installed. The pilot hole is first drilled down to a specific depth. The use of a pilot hole reduces the “end bearing” and “side resistance” within the drilled zone and aids the driving of the pile. This process also complicates …
New Longitudinal Error Balancing Approaches For Closed Traverses, Jose L. Manzano
New Longitudinal Error Balancing Approaches For Closed Traverses, Jose L. Manzano
Electronic Theses and Dissertations
This study presents two novel approaches to balance the horizontal longitudinal error of closure, EC, in closed polygonal traverses. The standard procedure to balance EC is the Compass Rule. This technique reduces EC to zero by applying corrections in the lengths of all traverse sides. Those corrections are proportional to the corresponding side lengths. That is, this approach is not an error-correcting approach, but an error-balancing procedure.
The proposed new techniques are based on sensitivity analysis of EC with respect to small variations, Δi, in the lengths of all sides i = 1, …