10-06-2017, 05:56 PM
Concrete International August 2017 No. 8 Complete Issue
Author(s)/Editor(s): American Concrete Institute | Size: 5.97 MB | Format: PDF | Quality: Original preprint | Publisher: American Concrete Institute | Year: 2017 | pages: 64
Author(s)/Editor(s): American Concrete Institute | Size: 5.97 MB | Format: PDF | Quality: Original preprint | Publisher: American Concrete Institute | Year: 2017 | pages: 64
The Franklin Avenue Bridge
The Franklin Avenue Bridge is an arch bridge crossing the Mississippi River between Minneapolis and St. Paul, MN. Completed in 1923 and last renovated in 1970, the bridge has been damaged by chloride-related corrosion of the reinforcement and long-term exposure to moisture and freezing-and-thawing cycles. This article, the second of a two-part series on the restoration of the bridge, focuses on the structural analysis and deck replacement using accelerated bridge construction (ABC).
International Exhibition on Pier Luigi Nervi
The “Pier Luigi Nervi – Art and Science of Building” Exhibition was displayed for the first time in North America at The ACI Concrete Convention and Exposition – Fall 2016 in Philadelphia, PA. The exhibition included 20 large panels with images and text, as well as videos on Nervi’s life and works. Located at the center of the convention activities, the Nervi Exhibition was seen and studied by almost 2000 convention attendees. The exhibition will be hosted next by the University of Miami, Miami, FL.
Full-Depth and Partial-Depth Bridge Deck Panels
Available options for accelerated bridge construction (ABC) include full-depth and partial-depth precast deck panels. The Nevada Department of Transportation (DOT) recently funded a survey of other DOTs throughout the U.S. regarding application and detailing of such deck panels. Data on panel connections, deck performance, and general design considerations were collected and summarized to help develop an understanding of the current state of the technology.
Measuring the Cracking Potential of Shotcrete
A recent research project was conducted to develop a suitable test method for evaluating the shrinkage cracking sensitivity of shotcrete mixtures. The experimental approach and an overview of the testing program are summarized, and the challenges of producing realistic and homogenous test specimens are discussed.
2017 International Parking Institute’s Awards of Excellence
The winners of the 2017 International Parking Institute’s (IPI) Awards of Excellence were announced at the 2017 IPI Conference and Expo in New Orleans, LA. Award categories included: Top Award for Architectural Excellence, Best Design of a Parking Facility with Fewer than 800 Spaces, Best Design of a Parking Facility with 800 or More Spaces, Best Design/Implementation of a Surface Parking Lot, Innovation in a Parking Operation or Program, Best Parking Facility Restoration or Rehabilitation, and Award for New Sustainable Parking & Transportation Facilities Excellence.
Concrete Q&A: Field- versus Standard-Cured Cylinders made from High-Strength Concrete
I’m a technician with a testing laboratory. On one of my projects, I understand that the specified strength is 10,000 psi (68.9 MPa), based on compressive tests of field-cured cylinders. For quality assurance, we are also testing standard-cured cylinders. The field-cured cylinders are consistently breaking at strengths that are 25 to 35% lower than the standard-cured specimens. Why such a difference in strength?
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