A new mixture of concrete has been developed to decrease the damage done in bomb attacks. This mix was used in the construction of the One World Trade Center in Lower Manhattan, Science Daily reports.
The danger posed by explosions to buildings is mainly in the debris that comes loose and goes flying. Traditional concrete is brittle, meaning that an explosive force can easily tear off chunks and fling them into the air.
This new concrete mix, developed by Dr. Stephan Hauser, Managing Director of Ducon Europe GmbH & CoKG, actually deforms instead of breaking. Very hard high-performance concrete is combined with finely-meshed reinforced steel, and when a certain threshold of pressure is exerted on the concrete, the steel ruptures and the shock is distributed uniformly throughout the concrete.
A new computational formula is what makes this possible. Researchers have developed a universal formula which allows them to rapidly compute the required thickness of the concrete for each specific application.
This formula was used in the application of the concrete to the One World Trade Center. The tower rests on a 20-story, bombproof foundation, and has "safety concrete" at vulnerable points, according to Science Daily.
Related Stories
| Oct 5, 2011
GREENBUILD 2011: Sustainable construction should stress durability as well as energy efficiency
There is now a call for making enhanced resilience of a building’s structure to natural and man-made disasters the first consideration of a green building.
| Oct 5, 2011
GREENBUILD 2011: Roof hatch designed for energy efficiency
The cover features a specially designed EPDM finger-type gasket that ensures a positive seal with the curb to reduce air permeability and ensure energy performance.
| Oct 4, 2011
GREENBUILD 2011: Large diameter polypropylene-random pipe unveiled
Available in North America for large scale piping applications including high-rise buildings, large chilled water systems, district energy, and water mains.
| Oct 4, 2011
GREENBUILD 2011: Wall protection line now eligible to contribute to LEED Pilot Credit 43
The Cradle-to-Cradle Certified Wall Protection Line offers an additional option for customers to achieve LEED project certification.
| Sep 27, 2011
Steel Joist Institute announces October webinar on Open Web Steel Joists
Webinar participants can earn 0.15 CEUs or 1.5 PDHs.
| Sep 14, 2011
More than 200 events planned for third annual SteelDay September 23
Special events in major cities including New York City, Chicago, Washington, D.C., and more.
| Sep 12, 2011
Construction waste management
Best practices for an environmentally optimized job site.
| Sep 12, 2011
Morgan Thermal Ceramics’ system for installing grease duct enclosures achieves UL listing
Updated installation results in 33% space savings.
| Apr 12, 2011
Spray Foam Applications on the Rise
New uses for spray polyurethane foam enable Building Teams to achieve greater longevity and sustainability in their projects.