Featured Research

from universities, journals, and other organizations

Carbon fiber used to reinforce buildings; protect from explosion

Date:
April 15, 2011
Source:
University of Missouri-Columbia
Summary:
Most buildings are not constructed to withstand an unexpected explosion or impact. Now, a researcher is working with the US Army to test a method of retrofitting buildings to protect them in the case of a terrorist attack.

Test explosion. University of Missouri researchers are working with carbon fiber to reinforce buildings and protect them from explosion.
Credit: MU News Bureau

Most buildings are not constructed to withstand an unexpected explosion or impact. Now, a researcher at the University of Missouri is working with the U.S. Army to test a method of retrofitting buildings to protect them in the case of a terrorist attack.

Related Articles


Sarah Orton, assistant professor of civil engineering in the MU College of Engineering, has focused on using carbon fiber reinforced polymer (CFRP), a fabric that can carry 143,000 pounds of force per square inch and has various applications to strengthen reinforced concrete buildings. CFRP has been used previously to strengthen buildings for earthquakes.

"CFRP has been used in places like California since the 1980s to protect buildings from earthquakes, but it has so many applications," Orton said. "Now, we have to worry about damage caused by attacks. This fabric can be a great tool to protect people in threatened buildings."

To protect a building from an extreme event, CFRP can be used to increase the bending capacity of walls or columns. Previously, Orton invented an anchor that can be embedded in the column or joint to make CFRP more effective. In that work, Orton found that the anchors allow the CFRP to reach its full tension strength rather than separating from the concrete at only about half its strength.

CFRP can be used to protect an entire wall from an explosion. To study the effectiveness of different ways of applying CFRP, Orton worked with the U.S. Army Engineer Research and Development Center (ERDC) to detonate explosives near CFRP-reinforced concrete slabs. She found that CFRP, when layered and anchored, provided a significant amount of protection. However, she said that applying additional protection to the front of the concrete slab, such as a steel plate, would enhance the slab's performance.

Orton says the high costs of approximately $30 per square foot have kept CFRP from being widely implemented in non-earthquake prone areas.

"This is a really useful material," Orton said. "I continue to be fascinated by the material's strength and applications. Retrofitting buildings with CFRP will help protect people from attacks and potentially collapse of the building."

The study, "Use of Carbon Fiber Anchors to Improve Performance of CFRP Strengthened Concrete Structures Subjected to Blast and Impact Loads," will be published in a special publication of the American Concrete Institute.


Story Source:

The above story is based on materials provided by University of Missouri-Columbia. Note: Materials may be edited for content and length.


Cite This Page:

University of Missouri-Columbia. "Carbon fiber used to reinforce buildings; protect from explosion." ScienceDaily. ScienceDaily, 15 April 2011. <www.sciencedaily.com/releases/2011/04/110414131836.htm>.
University of Missouri-Columbia. (2011, April 15). Carbon fiber used to reinforce buildings; protect from explosion. ScienceDaily. Retrieved October 30, 2014 from www.sciencedaily.com/releases/2011/04/110414131836.htm
University of Missouri-Columbia. "Carbon fiber used to reinforce buildings; protect from explosion." ScienceDaily. www.sciencedaily.com/releases/2011/04/110414131836.htm (accessed October 30, 2014).

Share This



More Matter & Energy News

Thursday, October 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mind-Controlled Prosthetic Arm Restores Amputee Dexterity

Mind-Controlled Prosthetic Arm Restores Amputee Dexterity

Reuters - Innovations Video Online (Oct. 29, 2014) A Swedish amputee who became the first person to ever receive a brain controlled prosthetic arm is able to manipulate and handle delicate objects with an unprecedented level of dexterity. The device is connected directly to his bone, nerves and muscles, giving him the ability to control it with his thoughts. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Robots Get Funky on the Dance Floor

Robots Get Funky on the Dance Floor

AP (Oct. 29, 2014) Dancing, spinning and fighting robots are showing off their agility at "Robocomp" in Krakow. (Oct. 29) Video provided by AP
Powered by NewsLook.com
Saharan Solar Project to Power Europe

Saharan Solar Project to Power Europe

Reuters - Business Video Online (Oct. 29, 2014) A solar energy project in the Tunisian Sahara aims to generate enough clean energy by 2018 to power two million European homes. Matt Stock reports. Video provided by Reuters
Powered by NewsLook.com
Lowe's Testing Robot Sales Assistants in California Store

Lowe's Testing Robot Sales Assistants in California Store

Buzz60 (Oct. 29, 2014) Lowe’s is testing out what it’s describing as a robotic shopping assistant in one of its Orchard Supply Hardware Stores in California. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



    Save/Print:
    Share:

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile: iPhone Android Web
    Follow: Facebook Twitter Google+
    Subscribe: RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins