Choose concrete with high recycled content.
About 5% of all CO2 emissions worldwide related to human activity come from the production of cement, an essential component in concrete. Demanding concrete with high recycled content (such as supplementary cementing materials) is a good way to reduce the greenhouse gas emissions related to foundation work.
Our recommendations :
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Fly ash from the combustion residue of coal-fired power plants is an example of the kind of recycled product that can be added to concrete to replace part of the cement, reducing GHGs. Mixtures containing from 15% to 25% fly ash are available on the market.
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Some kinds of concrete are made from aggregates (gravel, sand, glass, dust) recycled in the region where the concrete is used, which reduces resource waste and minimizes waste production.