The existence of eco-friendly, weather-resistant structures such as Thailand’s bamboo building are evidence that designers are saving the planet. To drive a point, MIT students are embedding irradiated water bottles into cement to make concrete more robust and sustainable.
The research revealed that exposing the plastic to gamma radiation actually made it stronger. The irradiated plastic was then ground into a powder and mixed with cement. The subsequent concrete was up to 20 percent stronger than concrete made without the irradiated plastic.
Engineers found the added plastic (only 1.5% of the concoction) made concrete significantly denser. If you’re skeptical about incorporating the mix into future room renovations, don’t worry — it isn’t radioactive. Furthermore, using plastic will potentially relieve a few dozen landfills.
“Concrete produces about 4.5 percent of the world’s carbon dioxide emissions,” says [MIT professor Michael] Short. “Take out 1.5 percent of that, and you’re already talking about 0.0675 percent of the world’s carbon dioxide emissions. That’s a huge amount of greenhouse gases in one fell swoop.”
Environmentalists might campaign for a plastic-free society — but it isn’t the easiest option. Perhaps, now, it’s all about redirecting your waste to where it will be most useful.
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!
With an increasing number of industries stepping away from fossil fuels, eco-friendly substitutes are all the hype. Over time, both human and cow excrement have proved useful in the kitchen and as gas replacements. Unsurprisingly, an Israeli study has found turkey poop to be a valuable resource in producing combustible biomass fuel.
“Environmentally safe disposal of poultry excrement has become a significant problem,” said the researchers in a statement. “Converting poultry waste to solid fuel, a less resource-intensive, renewable energy source, is an environmentally superior alternative that also reduces reliance on fossil fuels.”
The process converts turkey stool into hydrochar and biochar. Both materials produce much less methane and ammonia as compared to traditional coal.
“This investigation helped in bridging the gap between hydrochar being considered as a potential energy source toward the development of an alternative renewable fuel,” [environmental hydrology and microbiology professor Amit] Gross said. “Our findings could help significantly reduce greenhouse gas emissions associated with electricity generation and agricultural wastes.”
At this stage in the game, researchers at the Zuckerberg Institute seem to have killed two birds with one stone. It looks like these turkeys are off the dinner menu.