If a bamboo building can withstand several sorts of natural disasters, surely, any other structure can. Unfortunately, it isn’t really the case — until, maybe, now. Researchers at the University of British Columbia are testing a type of concrete that can resist high magnitude earthquakes.
Researchers at . . . UBC have created a fiber-reinforced concrete called eco-friendly ductile cementitious composite (EDCC), that can withstand high seismic activity. The engineered material combines “cement with polymer-based fibers, fly ash and other industrial additives,” according to a university press release.
Simply adding a 10-millimeter layer of the material to existing walls is enough to make it practically impenetrable. But the strength to withstand high magnitude earthquakes — up to a magnitude 9.0! — isn’t the only fantastic feature of the material. It is also linked to sustainability efforts. Considering that normal concrete contributes to nearly 7% of carbon emissions, using mostly fly ash or a coal combustion byproduct definitely earns EDCC points. Hopefully, it will lessen the damages caused by the cement industry to the environment.
“This UBC-developed technology has far-reaching impact and could save the lives of not only British Columbians, but citizens throughout the world,” said Melanie Mark, the minister of advanced education, skills and training in Vancouver-Mount Pleasant. “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.”
In the near future, EDCC will also be used for strengthening home structures and blast-resistant buildings. A proud salute to public universities making a difference!
As one of the world’s most in-demand resources, paper has a massive carbon footprint. Because of the waste it creates, many are recycling or seeking paper alternatives. Startup MOO produces business cards made with fabric waste, while Paper Saver is a no-new-paper journal. Now, a Dutch province is recycling tons of toilet paper into a 1km bike path for cyclists.
The bicycle path uses what’s called tertiary cellulose, extracted from waste streams, says Erik Pijlman, director at KNN Cellulose, one of the partners on the project. “We take the cellulose out of these streams and once again make it into a [raw material],”
But not to worry — you won’t be seeing any remnants of used tissues on the bike path. The process includes sifting paper fibers, which are then cleaned, sterilized, bleached, and dried. To say the technique is doing fine is an understatement — it’s taking over Dutch roads.
“What we did is not only create technology and prove that it works, but we also have a market that is willing to take in the material,” Pijlman says. “And that’s really the next step in this kind of development.”
The fiber can also be used in creating filters, biofuel, and textiles, among other things. Of course, while in theory it’s useful in creating other products, we’ll keep it away from direct human contact. No one wants a stinky pillow case.
A number of big brands have found ways to turn trash into fashion. Researchers at the University of Cambridge have gone back to basics. In an attempt to mimic spider silk, they produced hydrogel, an eco-friendly water fiber with the potential to revolutionize fabrics.
Hydrogel consists of about 2% cellulose and silica… suspended in water with some molecules that are shaped like tiny bracelets, called Cucurbiturils. These chemicals… hold the cellulose and silica together, allowing long, extremely thin fibers to be pulled from the gel.
The water evaporates shortly after the fibers are drawn out of the hydrogel, leaving behind a silken strand that is stronger than [most materials]. The strings also work like bungee cords, in some cases having a property of energy absorption called “damping capacity” that exceeds natural silks.
In friendlier terms, hydrogel produces fabrics that are pretty darn strong. The process uses non-hazardous solvents and demands minimal energy. Unique properties from its molecules also detect toxins and treat waste waters.
For anyone into sustainable fashion, this could shake up the textile industry. That’s what I call super science!