https://www.constructionjunkie.com/blog/2017/10/22/researchers-discover-additive-to-help-concrete-withstand-90-earthquakes Oct23, 2017 Shane Hedmond ...researchers at the Univ. of British Columbia have discovered a spray-on concrete reinforcement that greatly improves concrete’s resistance to earthquakes up to a magnitude of 9.1. Concrete walls are sprayed with the reinforcement, which is made up of “polymer-based fibers, flyash, and other industrial additives,” in a 0.4 inch (10mm) thick layer. The retrofit reinforcement allows the concrete to bend with the movement of the earthquake, making it much more ductile. The product is being called Eco-Friendly Ductile Cementitious Composite, or EDCC, due to its heavy reliance on flyash, with is an industrial byproduct of coal...
https://www.quarrymagazine.com/2020/03/19/earthquake-resistant-concrete-developed/ PCM_ADMIN 19/03/2020, 10:43 pm We subjected [EDCC-reinforced walls] to [Japan-level] quakes and other types and intensities of earthquakes — and we couldn’t break them.” Salman Soleimani-Dashtaki, UBC PhD civil engineering candidate and EDCC researcher
