Engineering Commons^™

Durability And Fatigue Behavior Of Cip Concrete Connections For Accelerated Bridge Construction, Peng Zhu

Doctoral Dissertations

Continuous longitudinal and transverse U-bar joint connections between flanges of the decked bulb-Ts (DBTs) or between precast panels for accelerated bridge construction are investigated. The procedure for selecting durable closure pour (CP) materials for the connections is discussed firstly. The accelerated construction is quantified as two categories: overnight cure and 7-day cure of CP materials. Candidate materials are selected first based on literature review as well as tests of compressive strength and flow and workability. Then, performance criteria for selecting durable CP materials for both categories are developed based on durability tests of selected candidate materials. These durability tests include …

Real-Time Health Monitoring System For Mast-Arm Sign Support Structures, Andrew David Smith

Master's Theses (2009 -)

There has been an ongoing study conducted by Marquette University and supported by the Wisconsin Highway Research Program that is seeking to understand the risk of fatigue-induced fracture in the connections of mast-arm sign support structures. This study has been brought on by recent problems encountered with the connections contained in, and the in-service performance of, several cantilevered mast-arm sign support structures. A resulting recommendation of phase one in this effort was to monitoring an in-service cantilevered mast-arm sign support structure.

The health monitoring system developed in this thesis effort includes a grouping of strain gages (full-bridge arrangements) positioned around …

Perpetual Pavement Analysis For The Marquette Interchange Instrumentation Project, Nicholas James Hornyak

Dissertations (1934 -)

With the emergence of the mechanistic-empirical pavement design process, development of pavements rely on the structural response and fatigue characteristics of pavement materials due to traffic loads. In the past, pavement design has been almost entirely based on empirical data. One area of interest in designing hot-mix asphalt (HMA) pavements is the fatigue life of the pavement, which has been shown to be dependent on the horizontal strain in the pavement.

This research is focused on measuring the structural response of a pavement located within the Marquette Interchange Project in order to analyze fatigue behavior with great detail. Virtually all …

Biomechanical Evaluation Of Modified Track Shoes, Marlon Alberetos Greensword

LSU Master's Theses

Track and field runners, especially sprinters and mid-distance runners, face many problems due to walking in spike shoes. Due to the fact that track and field spike shoes are designed specifically for running, the runner’s feet remain in an uncomfortable, flexed position when walking between workouts and races. Problems caused by the dangerous foot-positioning include, but are not limited to, the following: back pain, shin splints, bone spurs, blisters, and overall decreased level of running performance. Over time, runners wearing improper footwear for walking may face chronic injuries such as plantar fasciitis, shin splints, Achilles tendinitis, chondromalacia, and iliotibial band …