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  1. Influence of Nucleation Seeding on the Compressive Strength of Ordinary Portland Cement and Alkali Activated Blast-­Furnace Slag (Infrastructure Technology Institute Year 2 Final Report)

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    Description: A study is conducted to determine the effects on the early hydration kinetics and compressive strength by seeding of Portland cement and alkali-activated blast furnace slag with a pure form of calcium silicate hydrate (C-S-H). The effects of C-S-H seeding during the early nucleation and growth period of each type...
    Keyword: Cement production
    Creator: Hamlin Jennings , Jeffrey J. Thomas, and Mija Helena Hubler
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/26/2017
    Date Modified: 08/14/2017
    Date Created: 2009
    Rights: All rights reserved
    Resource Type: Report
  2. Excessive Long-Time Deflections of Prestressed Box Girders. Structural Engineering Report No. 09-12/ITI

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    Description: The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had the record span of 241 m (791 ft.), presents a striking paradigm of serviceability loss due to excessive multi-decade deflections. The data required for analysis have recently been released and are here exploited to show how...
    Keyword: Nondestructive testing
    Creator: Zdenek P. Bazant , Qiang Yu, and Guang-Hua Li
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/26/2017
    Date Modified: 07/26/2017
    Date Created: 2009-12
    Rights: All rights reserved
    Resource Type: Report
  3. Project No. B371, Acoustic Emission and Strain Gage Monitoring of WIDOT Structure B-5-158, Tower Drive Tied Arch - Green Bay, Wisconsin. Technical Report #1

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    Description: The in-depth inspection by WIDOT detected two sites that had visible cracks in the stiffener-to-hanger diaphragm welds, the east side of Hanger 6 in the north tie girder, and the east side of Hanger 4 in the south tie girder. Additionally, many ultrasonic indications were detected by WIDOT in the...
    Keyword: Acoustic emission testing
    Creator: David W. Prine
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/26/2017
    Date Modified: 08/14/2017
    Date Created: 1993-06-16
    Rights: All rights reserved
    Resource Type: Report
  4. Acoustic Emission Monitoring of the Trunnion Shafts on the Oregon DOT Bridge 1377A: I-5 (interstate) Columbia River Bridge East Lift Span, Portland, Oregon. Technical Report# 6

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    Description: This report describes the results of applying acoustic emission (AE) testing to the trunnion shafts of the East Span of the 1-5 Interstate Bridge. The tests were done at the request of Oregon DOT personnel to determine if active fatigue racks are present in the subject shafts.
    Keyword: Acoustic emission testing
    Creator: David W. Prine
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/26/2017
    Date Modified: 08/14/2017
    Date Created: 1994-11-30
    Rights: All rights reserved
    Resource Type: Report
  5. Problems Associated with Nondestructive Evaluation of Bridges

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    Description: The U.S. has 542,000 bridges that consume billions of dollars per year in construction, rehabilitation and maintenance funds and which are the lifelines of U.S. commerce. The 1992 ISTEA (fntermodal Surface Transportation Efficiency Act) mandates the implementation of a quantitative computerized bridge management system by I 996. A prime need...
    Keyword: Acoustic emission testing
    Creator: David W. Prine
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/26/2017
    Date Modified: 08/14/2017
    Date Created: 1995-06-06
    Rights: All rights reserved
    Resource Type: Report
  6. Using Simulation to Test Traffic Incident Management Strategies: Illustrating the Benefits of Pre-Planning

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    Description: This study tested a dynamic traffic assignment (DTA) model as a tool for pre-planning strategies for managing major freeway incidents. Incidents of varying scale and duration were modeled in the northern Chicago highway network, and the impacts of incidents and response actions were measured in terms of both lane-mile-hours of...
    Keyword: Traffic monitoring , Traffic engineering , and Traffic congestion management
    Creator: David F. Schulz , John J. Wirtz, and Joseph L. Schofer
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/19/2017
    Date Modified: 08/14/2017
    Date Created: 2004-07-28
    Rights: All rights reserved
    Resource Type: Report
  7. Structural Health Monitoring of Civil Infrastructure: Philosophy, Technical Methods, and Projects of the Infrastructure Technology Institute

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    Description: The mission of the Infrastructure Technology Institute is to develop strategies and tools to protect and improve the condition, capacity and performance of the nations highway, railroad, and mass transit infrastructure systems. The Institute does this through the development and deployment of (1) advanced technologies for structural health monitoring, (2)...
    Keyword: Structural health monitoring
    Creator: Matthew P. Kotowsky, Jeffrey J. Thomas , Joseph L. Schofer, and David E. Kosnik
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/12/2017
    Date Modified: 08/14/2017
    Rights: All rights reserved
    Resource Type: Report
  8. Materials of Cement Science Primer

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    Description: Few would argue that concrete is an important and useful material: after all, concrete is the backbone of the world’s infrastructure, used in vast amounts to make roads, buildings, bridges, and other structures. But sometimes familiarity breeds contempt. To most people, concrete is simply that boring grey stuff that we...
    Keyword: Concrete infrastructure , Concrete , and Cement
    Creator: Hamlin Jennings and Jeffrey J. Thomas
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/12/2017
    Date Modified: 08/14/2017
    Date Created: 2009
    Rights: All rights reserved
    Resource Type: Report
  9. The Nanostructure of Low-CO2 Concrete for a Sustainable Infrastructure

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    Description: The objective of this program is to measure the changes in the properties of the C-S-H gel phase in cement paste as a function of the Ca/Si ratio. The motivation is to better understand the hydration products that form in blended cements with lower Ca/Si ratios than portland cement. The...
    Keyword: Nanotechnology and Green infrastructure
    Creator: Hamlin Jennings and Jeffrey Thomas
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 07/12/2017
    Date Modified: 08/14/2017
    Date Created: 2008
    Rights: All rights reserved
    Resource Type: Report