We’re surrounded by concrete; it’s in our buildings, our roads, our tunnels, and runways. In fact, we produce around 10 billion tonnes of concrete every year, that’s more than a tonne each for every person on earth.
Strong, durable, and affordable, the benefits of concrete are undeniable. But there’s one issue that gives the material a bad name – its carbon intensive production process.
Most of the components of concrete – water, sand, and gravel – are natural, but its one key ingredient – cement – has major environmental implications. Industrial extraction and high temperatures in the production process lead to one tonne of CO2 emitted for every tonne of cement produced. This accounts for 5% of annual global anthropogenic CO2 produced.
But it doesn’t have to be that way. We have collated 11 green building materials that offer sustainable alternatives to concrete, and a lower environmental impact.
– Straw Bales
– Rammed Earth
– Recycled Plastic
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