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- <p>Lightweight concrete -- Testing<br />Precast concrete -- Testing<br />Aggregates (Building materials)<br />Shear (Mechanics) -- Mathematical models<br />Friction -- Mathematical models</p> (2)
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Articles 31 - 35 of 35
Full-Text Articles in Engineering
Behavior Of Crimped Cold-Formed Steel C-Section Beams, Jeffrey Devon Smith
Behavior Of Crimped Cold-Formed Steel C-Section Beams, Jeffrey Devon Smith
Masters Theses
"This work covers the behavior of crimped cold-formed steel C-section beams under flexural loading. The specific beam shape that was tested was 600S162-54. The crimps were placed in the flange and web of the beam to curve the beam. Three crimp sizes were tested: 0.5 degree, 1.5 degree, and 3.0 degree. In construction practice, the company placed a reinforcing steel band that overlapped the crimped areas to restore strength. These various crimp degrees were tested to evaluate how much strength, if any, was lost. The reinforcing steel band was tested simultaneously with the beam to evaluate if its presence significantly …
3d Numerical Modelling Of Micropiles Interaction With Soil & Rock, Audai Kamal Theinat
3d Numerical Modelling Of Micropiles Interaction With Soil & Rock, Audai Kamal Theinat
Masters Theses
"A 5-span bridge along the Foothills Parkway of the Great Smoky Mountains, TN, was recently completed. Two out of the four piers were instrumented to measure the load transfer in the foundations. The foundations consisted of twenty 10-inch micropiles under the pile cap for each pier. Strain gages were installed and monitored at the different stages of construction. The objective of this research is to examine the interaction between the ground and micropiles using the field data performance and numerical modelling. The 3D computer model consists of the micropile foundation within the steep rock bedding planes and overburden soils. The …
Damage Detection Through Acoustic Emission Of Fracture Processes In Concrete Masonry Units, John Alexander Cain
Damage Detection Through Acoustic Emission Of Fracture Processes In Concrete Masonry Units, John Alexander Cain
Masters Theses
"Masonry structures are vulnerable to earthquakes; their brittleness and discontinuous formation make them susceptible to collapse. In the event of an emergency, this could be detrimental and perhaps fatal. The area of Structural Health Monitoring (SHM) is focused on understanding the behavior of structures for the sake of safety and predicting their longevity. One applicable technique to monitor this behavior is Acoustic Emission (AE). Acoustic Emissions are transient elastic waves released as microcracks nucleate from stress intensities, coalesce into cracks and then accumulate as damage. AE monitoring is a favorable method because it is capable of detecting cracking from within …
An Investigation Of Shear-Friction Of Lightweight Aggregate Concretes, Kristian Krc
An Investigation Of Shear-Friction Of Lightweight Aggregate Concretes, Kristian Krc
Masters Theses
"This thesis reports the results of research initiated to evaluate the influence of lightweight aggregate type and casting procedure on shear transfer across an interface of concretes cast at different times. The topic of shear transfer has been evaluated and revisited in recent PCI Design Handbooks. In this test program, a series of cold joint as well as monolithic specimens are evaluated. The peak shear strength and post peak behavior are examined. The experimental matrix included 28 push-off specimens that were either cast monolithically or cast at different times creating the condition referred to as a cold joint. The variables …
Advanced Sustainable Concrete Materials For Infrastructure Applications, Kaylea Ann Smith
Advanced Sustainable Concrete Materials For Infrastructure Applications, Kaylea Ann Smith
Masters Theses
"This study was performed to examine the effects of cement replaced by high volumes of Class C fly-ash on durability characteristics of concrete up to 120 days. Specifically, this study investigates possibility of amending American Society for Testing and Materials (ASTM) to allow High Volume Fly-ash (HVFA) concrete to cure until later ages prior to testing instead of 28 days. Five mix designs were compared with varying fly-ash percentages from 0 to 70% (by total cementitious mass). No other additives were present in any of the five mix designs. Water-to-cementitious ratio (w/cm) and total cementitious material remained constant as 0.40 …