Feasibility Study for a Freeway Corridor Infrastructure Health Monitoring (HM) Instrumentation Testbed

Feasibility Study for a Freeway Corridor Infrastructure Health Monitoring (HM) Instrumentation Testbed
Author:
Publisher:
Total Pages: 208
Release: 2012
Genre: Bridges
ISBN:
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This research report discusses the planning necessary for the proper development, acquisition, installation, and maintenance of an effective health monitoring network for transportation infrastructure systems. A comprehensive literature search was conducted, and the materials were compiled into a database, reviewed, and synthesized. Data elements vital for maintaining safe and functional transportation infrastructures were identified and discussed for bridge structures, pavements, and geotechnical structures. Moreover, the steps necessary for planning an instrumentation system for a particular structure are presented. Sample design plans for the transportation infrastructure systems that are typically constructed in Wisconsin were obtained from WisDOT, and suggested instrumentation plans were developed for these transportation systems. One of the objectives of the research project is to identify urban freeway construction projects that could efficiently serve as hosts for an infrastructure health monitoring (IHM) instrumentation testbed. Major current and near-future construction projects in Wisconsin were identified and critically evaluated to identify a candidate project to host the IHM testbed. Among the candidates, the Zoo Interchange reconstruction project is recommended for hosting the infrastructure health monitoring testbed. Cost estimates based on current market prices are provided for the instrumentation plans developed for IHM of bridge structures, pavements, and geotechnical structures. To provide an example of using IHM data in applications, archived data from the Marquette Interchange instrumentation project was used to develop vehicle wander patterns and load spectra data, both in the form needed to conduct a mechanistic appraisal of the pavement structure using the DARWin ME software. The research team designed and conducted an IHM survey of state highway agencies in the U.S. and Canada. The survey showed that 46 percent of state DOTs have implemented health monitoring applications for transportation infrastructure. The survey also identified the impediments facing state DOTs in implementing IHM systems.

Accelerated Pavement Testing to Transport Infrastructure Innovation

Accelerated Pavement Testing to Transport Infrastructure Innovation
Author: Armelle Chabot
Publisher: Springer Nature
Total Pages: 724
Release: 2020-08-25
Genre: Technology & Engineering
ISBN: 3030552365
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This volume gathers the latest advances, innovations, and applications in the field of accelerated pavement testing (APT), presented at the 6th International Conference on Accelerated Pavement Testing, in Nantes, France, in April 2022. Discussing APT, which involves rapid testing of full-scale pavement constructions for structural deterioration, the book covers topics such as APT facilities, APT of asphalt concrete and sustainable/innovative materials, APT for airfield pavements, testing of maintenance and rehabilitation solutions, testing of smart and multi-functional pavements, data analysis and modeling, monitoring and non-destructive testing, and efficient means of calibrating/developing pavement design methods. Featuring peer-reviewed contributions by leading international researchers and engineers, the book is a timely and highly relevant resource for materials scientists and engineers interested in determining the performance of pavement structures during their service life (10+ years) in a few weeks or months.

Instrumentation of the WAY-30 Test Pavements

Instrumentation of the WAY-30 Test Pavements
Author: Shad M. Sargand
Publisher:
Total Pages: 264
Release: 2008
Genre: Pavements
ISBN:
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The US Route 30 bypass of Wooster, Ohio, in Wayne County, "WAY-30", was constructed to demonstrate two types of extended service pavements, a long-life Portland cement concrete (PCC) pavement on the eastbound lanes and an asphalt concrete (AC) perpetual pavement on the westbound lanes. Both pavements are designed to provide 50 years or more of service with minimal maintenance (e.g. resurfacing). The PCC pavement structure features a thick and extra-wide slab on an asphalt treated base, while the AC pavement structure features a Superpave surface and a Fatigue Resistant Layer (FRL). Two sections in each direction were instrumented with pressure cells to monitor subgrade pressures and deep and shallow LVDTs to record pavement deflections. The AC test section also had transverse and longitudinal strain gages. A weather station was also used to monitor environmental conditions. Nondestructive testing of the subgrade was conducted prior to pavement placement. Pavement materials and samples were tested in the laboratory to determine material parameters. Controlled vehicle load and falling weight deflectometer tests were applied to the AC pavement shortly after the road opened to traffic in December 2005 and again under hot weather conditions in July 2006. Similar tests on the PCC pavement were conducted in December 2005 and August 2006. The response on both types of pavement met their respective design criteria. A verification analysis of the AC pavement response using the elastic layer system (ELS) simulation using material properties derived from laboratory and field sample data yielded unsatisfactory matches, suggesting that some refinement of the approach is needed

Habitability of Other Planets and Satellites

Habitability of Other Planets and Satellites
Author: Jean-Pierre de Vera
Publisher: Springer Science & Business Media
Total Pages: 432
Release: 2013-07-30
Genre: Science
ISBN: 9400765460
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Is the Earth the right model and the only universal key to understand habitability, the origin and maintenance of life? Are we able to detect life elsewhere in the universe by the existing techniques and by the upcoming space missions? This book tries to give answers by focusing on environmental properties, which are playing a major role in influencing planetary surfaces or the interior of planets and satellites. The book gives insights into the nature of planets or satellites and their potential to harbor life. Different scientific disciplines are searching for the clues to classify planetary bodies as a habitable object and what kind of instruments and what kind of space exploration missions are necessary to detect life. Results from model calculations, field studies and from laboratory studies in planetary simulation facilities will help to elucidate if some of the planets and satellites in our solar system as well as in extra-solar systems are potentially habitable for life.

To Defend and Deter

To Defend and Deter
Author: John C. Lonnquest
Publisher:
Total Pages: 0
Release: 2014-11-17
Genre:
ISBN: 9780976149453
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The Department of Defense's official history of the United States Cold War missile program--completely reformatted with all-new color illustrations and photographs not used in the original edition. The DoD commissioned this study as part of its Cold War Project in 1996. With permission from the DoD's Legacy Program, Hole in the Head Press brings To Defend and Deter back into print. This informative guide offers a thorough look at Cold War missile development, from the earliest beginnings of rocketry in the 13th century to the arms control agreements that began in the 1970s. Both a narrative history and reference guide, To Defend and Deter traces the evolution of the Cold War and establishes the United States missile program's scope and its massive impact on the American landscape, citizens, and structure of the U.S. military establishment.