Heidelberg Materials UK’s Post

Transcript

I've just been talking about what we know as supplementary cementitious materials, which are additions to cement to make concrete. Typical examples of cement substitutes are GBS, ground granulated blast furnace, slag, fly ash and they are needed technically to provide durability to concrete like resistance to sulfate attack or chloride ingress. They also have other benefits like they actually contribute to circularity because they often buy products from the industry as a Plaza industries or and these days they have a low embodied calm than Portland cement and that's another big attraction of those materials. I think there will be some front runners because we do need eventually when we have less GBS suppliers available, we can replacements and I think that could be materials like courtside clay in the UK. Or natural puzzle lands or possibly even beneficiated fly ashes which are already quite big these days in America and in Canada. I think there are many other things in development as well, not only those three I just mentioned before. Like we will certainly also looking at electric arc furnace slacks, recycled concrete fines can be activated with CO2. And then there are many other startup technologies which we monitor regularly and some of them are promising will make it as as will not make it. But it's a constantly evolving future in that respect.