PaintSquare.com
      | Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise
  

 

Get Paint BidTracker's Bridge Painting Opportunities of 2015

Paint and Coatings Industry News

Main News Page


University Develops ‘Bridge in a Backpack’

Tuesday, November 16, 2010

Comment | More

Bridge in a Backpack

The University of Maine has developed a lightweight, corrosion-resistant, transportable “Bridge in a Backpack” that can be shipped in a bag to any construction site.

The system, for short- to medium-span bridges, uses Fiber Reinforced Polymer (FRP) composite arch tubes that act as reinforcement and formwork for cast-in-place concrete. The arches are easily transportable, rapidly deployable and do not require the heavy equipment or large crews needed to handle the weight of traditional construction materials, the university says.

Two Maine bridges have been rebuilt using the Bridge-in-a-Backpack technology: the Neal Bridge in Pittsfield, ME (pictured above), and the McGee Bridge in North Anson, ME. Six more of these arch bridges will be constructed in Maine over the next two years, the university says. In addition, two will be constructed in Massachusetts.

Development and Testing

The bridge technology was developed over eight years by the University of Maine’s AEWC Advanced Structures and Composites Center and introduced in 2009 by center director Habib Dagher. Project partners include the Maine Department of Transportation and the U.S. Army Natick (MA) Soldier Research, Development & Engineering Center.

The technology uses carbon-fiber tubes that are inflated, shaped into arches and infused with resin before being moved into place. The tubes then are filled with concrete, producing arches that are harder than steel, yet resistant to corrosion the inventors say.

Testing at the AEWC included structural characterization and modeling; fatigue testing for 50+ years of truck traffic, environmental durability testing for UV, fire, freeze-thaw and abrasion resistance; and instrumentation and field load testing.

“These arches capitalize on their inherent properties to transform vertical loads to internal axial forces, the superiority of concrete in sustaining compression loads, and the versatility and strength of composite materials,” ASCC says in a detailed flyer.

Licensing and Manufacturing

Advanced Infrastructure Technologies LLC, of Orono, ME, has licensed the bridge technology.

The fabrication of superstructure elements is a proprietary process that fuses several layers (including carbon fiber) with resin to create the composite material, the company says. The arches are transported to the job site, placed in position, covered in composite decking and filled with an expansive concrete, the company says.

AIT says the system lowers construction costs, extends structural lifespan up to 100 years, and has 50% of the carbon footprint of a concrete bridge.

All designs are engineered to exceed AASHTO load standards for single-span bridges from 25 feet to 70 feet and multi-span designs exceeding 800 feet, the company says.

   

Tagged categories: Bridges

Comment Join the Conversation:

Sign in to our community to add your comments.

Atlantic Design, Inc.
MORE THAN JUST A SALES PITCH!

Simplicity! Dependability! Safety! We’ve built these features into every cleverly engineered inch of our newest models. It’s all there. 866.Call.ADI


Abrasives Inc.
Check our Prices for Blast Abrasives

Faced with higher abrasive costs? We invite you to call & check our rates on Black Magic® coal slag and other quality blast materials. Abrasives Inc. 800-584-7524


Termarust Technologies
Termarust (HR CSA) Chemically Stops
Active Corrosion

Arch truss treated with Termarust's (HR CSA) in 2003. This steel arch bridge is rust free on all surfaces including the crevice corroded joints and connections.


HoldTight Solutions Inc.
NO FLASH RUST -
NO CONTAMINANTS

Our HoldTight®102 salt remover & flash rush inhibitor prevents flash rust by removing surface contaminants.
Contact us for your nearest distributor. (800) 319.8802 sales@holdtight.com


SAFE Systems, Inc.
Portable Blast &
Recovery Equipment

Trailer or skid mounted blast and recovery equipment. Systems designed for maximum versatility, environmental compliance
and overall cost savings.
Call 1-800-634-7278


Absolute Equipment/Grand Rental Station
Portable Power from Absolute Equipment

•Compressors
•Lighting Systems
•Generators
•Light Compaction
Sales • Rental • Service
Call 1-866-931-6655
Over a century of
providing excellence.


Safway Services
Suspended Access Made Easy With QuikDeck™

The smart choice for suspended access, QuikDeck’s interchangeable, lightweight components make them easy to set up and reassemble when you need to move.


Wasser High-Tech Coatings Inc.
Wasser Coatings Protect

Wasser Coatings offer a complete range of Moisture Cure Urethane (NEPCOAT approved) systems in addition to Polyurea membranes and linings(NSF).
www.wassercoatings.com


U.S. Zinc
Historic Reliability. Innovative Performance.

We offer custom grades and packaging of zinc dust, oxide, metal and fines, U.S. Zinc provides direct shipping to locations worldwide. U.S. Zinc – Helping the world work™

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2015, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com