Concrete has been doing more or less the same thing for a long time. You mix cement, aggregate, and water, and then you pour it, let it set, and build something with it. The basic recipe hasn’t changed a great deal since the Romans worked out that volcanic ash made an extraordinary binder, and much of what they built using it is still standing today, which is arguably the most damning indictment of the lifespan of modern concrete that you could have. But something is going on with concrete technology right now, and it deserves a lot more attention than it is getting.
The carbon problem came first. Cement production alone is responsible for around eight per cent of global CO2 emissions, which is the sort of number that makes the issue impossible to ignore when net zero becomes a requirement rather than wishful thinking. And it is driving innovation at a pace that the industry hasn’t seen in decades. For Concrete Tewkesbury, contact https://www.monstermixconcrete.co.uk/concrete-tewkesbury/
Low-carbon cements, supplementary cementitious materials, carbon capture integrated into the production process: all the things that sounded like fantasy ten years ago are now getting to the point where they might just work. And then there is the issue of performance. Self-healing concrete that uses bacteria to repair its own cracks. Ultra high-performance concrete with strength characteristics that change what is structurally possible. Transparent concrete that allows light to pass through solid walls. Concrete that generates electricity from footfall. These are not laboratory curiosities. These are materials that are moving toward mainstream construction with genuine momentum.
The concrete that built the 20th century was remarkable in its own right. What’s coming next is something else entirely. The most ancient building material in human history is having its most interesting chapter yet.