Oct 172017
 

via UBC

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.

Learn more: UBC researchers develop earthquake-resistant concrete

 

The Latest on: Earthquake-resistant concrete
  • No Lessons Learnt From Quakes in India’s Northeast
    on January 16, 2018 at 3:59 am

    They found that while several reinforced concrete (RC) buildings in Imphal had suffered ... to ignore the threat and continued to build structures [that] were not earthquake-resistant.” Due to such negligence, he said, “many publicly funded buildings ... […]

  • This $33,000 Home Is Built In 7 Hours And Can Resist Earthquakes
    on January 16, 2018 at 3:34 am

    house makes it possible to put up a structure that’s earthquake resistant and costs less than $35,000 ... and they don’t even require a concrete base to set-up. All that’s needed is leveled ground. The structures are also easy to disassemble and ... […]

  • No lessons learnt in quake-prone North-East
    on January 11, 2018 at 11:03 pm

    It was found that while several reinforced concrete (RC) buildings in Imphal suffered varying ... chose to ignore the threat and continued to build structures that were not earthquake-resistant.” Due to such negligence, he said, “many publicly-funded ... […]

  • Much awaited revised BNBC on the cards
    on January 10, 2018 at 8:27 pm

    Sadeque said a new BNBC was a must needed document for the engineers right now as the existing BNBC was made long back in 1993 following the 89 ACI (American Concrete Institute ... make the vulnerable building earthquake resistant with cost of around ... […]

  • What traditional buildings can teach architects about sustainability
    on December 27, 2017 at 6:08 pm

    Due to tight restrictions on public buildings, Kettani says he had little choice but to opt for earthquake-resistant concrete. However, he and fellow architects Saad El Kabbaj and Mohamed Amine Siana found other ways to incorporate the architectural ... […]

  • New earthquake-resistant concrete to be tested in India - Report
    on November 2, 2017 at 1:36 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 vulnerable structures. The seismic-resistant, fibre-reinforced ... […]

  • New earthquake-resistant concrete to be tested in India
    on October 30, 2017 at 8:13 am

    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 structures. The seismic-resistant, fibre-reinforced concrete ... […]

  • 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. "This material can be sprayed on vulnerable structures ... […]

via Google News and Bing News

  2 Responses to “Earthquake-resistant concrete sees its first real-life application”

  1. When it will be available commercially

Leave a Reply

%d bloggers like this: