A new seismic-resistant, fibre-reinforced concrete developed at the University of British Columbia will see its first real-life application this fall as part of the seismic retrofit of a Vancouver elementary school.
The material is engineered at the molecular scale to be strong, malleable, and ductile, similar to steel—capable of dramatically enhancing the earthquake resistance of a seismically vulnerable structure when applied as a thin coating on the surfaces.
Researchers subjected the material, called eco-friendly ductile cementitious composite (EDCC), to earthquake simulation tests using intensities as high as the magnitude 9.0–9.1 earthquake that struck Tohoku, Japan in 2011.
“We sprayed a number of walls with a 10 millimetre-thick layer of EDCC, which is sufficient to reinforce most interior walls against seismic shocks,” says Salman Soleimani-Dashtaki, a PhD candidate in the department of civil engineering at UBC. “Then we subjected them to Tohoku-level quakes and other types and intensities of earthquakes—and we couldn’t break them.”
EDCC has been added as an official retrofit option in B.C’s seismic retrofit program, and the team will be working with contractors in the next couple of months to upgrade Dr. Annie B. Jamieson Elementary School in Vancouver.
“This UBC-developed technology has far-reaching impact and could save the lives of not only British Columbians, but citizens throughout the world,” said Advanced Education, Skills and Training Minister Melanie Mark. “The earthquake-resistant concrete is a great example of how applied research at our public universities is developing the next generation of agents of change. The innovation and entrepreneurship being advanced at all of our post-secondary institutions is leading to cutting-edge technologies and helping to create a dynamic, modern B.C. economy that benefits all of us.”
EDCC combines cement with polymer-based fibres, flyash and other industrial additives, making it highly sustainable, according to UBC civil engineering professor Nemy Banthia, who supervised the work.
“By replacing nearly 70 per cent of cement with flyash, an industrial byproduct, we can reduce the amount of cement used,” said Banthia. “This is quite an urgent requirement as one tonne of cement production releases almost a tonne of carbon dioxide into the atmosphere, and the cement industry produces close to seven per cent of global greenhouse gas emissions.”
The research was funded by the UBC-hosted Canada-India Research Centre of Excellence IC-IMPACTS, which promotes research collaboration between Canada and India. IC-IMPACTS will make EDCC available to retrofit a school in Roorkee in Uttarakhand, a highly seismic area in northern India.
“This technology is gaining significant attention in India and will provide our Canadian companies a strong competitive edge in the growing global infrastructure market,” added Banthia, who also serves as IC-IMPACTS scientific director.
Other EDCC applications include resilient homes for First Nations communities, pipelines, pavements, offshore platforms, blast-resistant structures, and industrial floors.
The Latest on: Earthquake-resistant concrete
Skyscraper movie director wanted "a tower based on real possibilities" says Adrian Smith
on July 12, 2018 at 2:21 pm
Key features are outlined as "pressurised safe rooms with reinforced fireproof concrete every 10th floor", and wind- and earthquake-resistant elements. Smith stressed that while adhering to real possi... […]
Israel's earthquake measures utterly inadequate
on July 9, 2018 at 7:02 am
The recent earthquakes again remind us how concrete the risk of a powerful earthquake in ... The state's responsibility is to reinforce buildings that everyone knows are not earthquake resistant. Nati... […]
New earthquake-resistant concrete to be tested in India - Report
on November 2, 2017 at 5:00 am
PTI reported that researchers plan to retrofit a school building in quake-prone Uttarakhand with a novel concrete coating that can dramatically enhance the earthquake resistance of seismically vulnera... […]
New earthquake-resistant concrete to be tested in India
on October 30, 2017 at 8:13 pm
TORONOTO: Researchers plan to retrofit a school building in quake-prone Uttarakhand with a novel concrete coating that can dramatically enhance the earthquake resistance of seismically vulnerable stru... […]
Sprayable earthquake-resistant concrete could 'save lives,' researchers say
on October 10, 2017 at 6:36 pm
Researchers at the University of British Columbia have developed a spray-on concrete substance they say will make buildings earthquake-resistant and can be used to retrofit schools for half the price. ... […]
Build an earthquake resistant structure
on January 26, 2017 at 4:00 am
Simon Peter Kazibwe of Royal architects & associates at Freedom City mall, says the main goal of an earthquake resistant structure is to save ... withstand earthquake vibrations better than others. Co... […]
Build an earthquake resistant structure
on January 25, 2017 at 4:00 pm
He firmly believes that it is possible to build earthquake resistant structures ... s infrastructure that will withstand earthquake vibrations better than others. Concrete is very good at resisting da... […]
Forget steel and concrete, earthquake 'curtains' could make buildings quake-proof
on August 24, 2016 at 1:05 am
How do you protect buildings in a country bedevilled by earthquakes? Instead of using steel or concrete, a Japanese textile firm turned to carbon-fibre ropes. The company, Komatsu Seiren, had develope... […]
Earthquake-resistant Torre Reforma skyscraper is built to last 2,500 years
on July 22, 2016 at 5:00 am
Engineered by Arup, the recently completed Torre Reforma is a three-sided concrete high-rise that’s pre-certified as a LEED Platinum Core and Shell project. This stunning feat of engineering is built ... […]
Kengo Kuma anchors an earthquake-resistant building with carbon-fiber threads
on April 19, 2016 at 6:01 am
This concrete building may look like its draped in a transparent bridal veil, but its sculptural exterior serves a bigger function than just looks. Architecture firm Kengo Kuma and Associates converte... […]
via Google News and Bing News