Thu, 04 Jun 2026 17:36:06 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310547#Comment_310547 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310547#Comment_310547 Sun, 19 Apr 2026 23:00:46 +0100 ChrisGT https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310549#Comment_310549 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310549#Comment_310549 Mon, 20 Apr 2026 08:41:06 +0100 philedge
What's nuts about the peak cluster is that it's going to cross the Hynet pipeline but not join it. It's beyond me why they can join the pipelines and share the same resource.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310550#Comment_310550 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310550#Comment_310550 Mon, 20 Apr 2026 10:28:48 +0100 WillInAberdeen
1) stop using it

2) CCS

3) both of the above

In principle I'm leaning towards 1) but recognise that lots of people are still using it including me, so looks like 2) or 3) are the way we'll be going.

AIUI the Hynet project will quite rapidly fill up the redundant Douglas gas field it is being pumped into, so a different redundant gas field will be used for Peak Carbon further North near Morecambe, if either/both projects are built.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310553#Comment_310553 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310553#Comment_310553 Mon, 20 Apr 2026 23:03:28 +0100 Mike1 Posted By: WillInAberdeenThe possible ways to decarbonise cement/concrete/lime areor, for cement

4) recover the cement from crushed concrete:
https://www.cam.ac.uk/stories/cement-recycling]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310554#Comment_310554 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310554#Comment_310554 Tue, 21 Apr 2026 10:07:50 +0100 WillInAberdeen
This one is a neat idea, but it works by using a steelmaking furnace to decompose the minerals at 1000+ degC instead of doing the same heating in a cement kiln. Same idea as GGBS.

So the supply of cementitious material is limited by how much steel your country is making (which in the UK is not much anymore). So great as a niche product or as an interim solution, but not going to fully substitute for kiln cement I fear.

Also (like GGBS) it's something of an accounting trick to call it zero emissions cement - you assign all the emissions to the steel products instead, and claim the cement is emissions free!

But yes there are a number of ideas like this to reduce use of conventional cement ("stop using it"), all helpful at nibbling away at cement kiln usage, but not looking like enough to eliminate it.

If anything the 'benefit' of the cement substitutes and CCS is they will make cement much more expensive, so then people will think longer and harder before they specify it! Does my slab really need to be 200mm think, would 80mm do instead? Does my garage floor need to be equally as strong as a bridge on HS2 or could I use a weaker mix? Etc]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310556#Comment_310556 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310556#Comment_310556 Tue, 21 Apr 2026 11:11:53 +0100 owlman https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310557#Comment_310557 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310557#Comment_310557 Tue, 21 Apr 2026 12:39:50 +0100 ChrisGT https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310558#Comment_310558 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310558#Comment_310558 Tue, 21 Apr 2026 13:30:35 +0100 fostertom https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310559#Comment_310559 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310559#Comment_310559 Tue, 21 Apr 2026 14:46:50 +0100 owlman However, 5bn for an almost infinitesimal Global production amount, mmm the the skeptics have it right IMO.
Follow the money as they say.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310560#Comment_310560 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310560#Comment_310560 Tue, 21 Apr 2026 16:56:00 +0100 WillInAberdeen
On a population size basis, our cement emissions are waaay more than the average per person in the world, we use a lot more cement here than most people do.

At a CO2 trading price of £80 / tonne that will cost UK cement businesses £17 billion pounds over the next 30 years if they don't do anything about it.

Sounds like they have decided that CCS is going to save them a big chunk of that cost !


By comparison, replacing 1.5 million cars with electric ones at £30k each, would cost £45 billion, so decarbonising (or stopping) cement emissions is a pretty cheap way to cut carbon, compared to that.


If you ever meet a 'skeptic' as they are called in America, ask them how much they're spending on droughts wildfires floods and hurricanes over there, they always seem a bit vague about how much climate change is already costing them.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310561#Comment_310561 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310561#Comment_310561 Tue, 21 Apr 2026 18:19:10 +0100 chrisinbrighton https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310562#Comment_310562 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310562#Comment_310562 Wed, 22 Apr 2026 11:46:45 +0100 WillInAberdeen
carbon trading scheme (coming next few years) will add about £2 to production cost of a 25kg bag. If they can make CCS work (5-10 years from now), that will save about £1 off that.

so called 'lower carbon' cement with GGBS in it , is now about £5 more than a bag of basic cement, that's just because it's a speciality product so higher priced

So question is whether they pass on CCS costs and savings to customers, or sell it as a specialty product at whatever price the market will bear.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310563#Comment_310563 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18425&Focus=310563#Comment_310563 Wed, 22 Apr 2026 18:03:45 +0100 fostertom
"or sell it ... at whatever price the market will bear" Don't they always? Unless govt has courage - they mandate, not merely incentivise lead/alcohol levels in road fuel; all follow suit, so that kind is the only kind; the door is closed on that avenue of product differentiation for premium pricing, in a mature commodity market, so price remains the only competitive advantage.]]>