Big Neil Posted November 19, 2018 Posted November 19, 2018 Anyone here used this product? It has been a while since i looked at it, but my understanding from speaking with the producers is that cem-free is an additive/activator or whatever one might call it, which can be used in conjunction with GGBS as a 100% replacement for OPC in concrete. If not this then has anyone used a concrete mix with a large percentage of slag or I guess it could be done with ash?
Big Neil Posted November 20, 2018 Author Posted November 20, 2018 should I have added that this isn't an advert? I just wanted to find if anyone knew anything about either the product or the principle of Cement substitution.
Gone West Posted November 20, 2018 Posted November 20, 2018 I wanted to use a percentage of furnace ash in the concrete for our slab and was told by the structural engineer that we couldn't because it would weaken the concrete too much.
PeterW Posted November 20, 2018 Posted November 20, 2018 Sounds like a half way house to pozzolano concrete which is much less reliant on OPC but needs longer to cure.
Big Neil Posted November 25, 2018 Author Posted November 25, 2018 If i've read correctly about PPC then it might be more accurate to say, that IT is a halfway house to cemfree. www.cemfree.co.uk - which doesn't seem to be working at the moment - is the website for it - part of the DAvid BAll group. If anyone can actually understand the technical bits then feel free to enlighten me
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