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Planet earth. One concrete reason we’re reducing our carbon

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How to reduce emissions from concrete? Stevenson Concrete searched the globe… and came up with a game-changer! Our new Stevenson CarbonCure technology replaces a portion of the cement with injected, captured CO2, reducing carbon emissions.

Concrete presents a dilemma for New Zealand and Stevenson. It’s the most abundant man-made material in the world. It’s used everywhere in construction because of its longevity, strength and durability.

2021 life couldn’t exist without it.

But cement in concrete is also a greenhouse gas emitter. It’s responsible for 8% of the world’s CO2 emissions – more than global aviation (pre-Covid). Our dilemma at Stevenson: how to reduce emissions from concrete? We searched the globe… and came up with a game-changer!

Stevenson are the first concrete producer to bring CarbonCure to the market in New Zealand. CarbonCure is a 2015 technology, proven around the world. It replaces a portion of the cement with injected, captured CO2. This reduces
carbon emissions. The concrete remains as strong and tough as it was before. It works like a carbon sink. The CO2 is a by-product of another industry. It’s sent to us in pressurised tanks. We replace part of the cement with it, meaning there’s a dual, positive effect: sequestering of CO2, and subsequent reduction of a component that emits.

Now there’s an idea that’s set in – well – concrete!

“Along with a number of other carbon-decreasing initiatives we are using, this technology is going to change the way New Zealand builds houses, footpaths, roads, pipes, and thousands of other man-made, everyday objects.
Stevenson has brought it into the New Zealand mainstream, just as this technology is used in countries like Singapore, North America and parts of Europe.”

Anthony Bitossi, General Manager Stevenson Concrete