SteamyTea Posted May 19 Share Posted May 19 (edited) Another monthly temperature record 16 May 2024 Global temperatures last month, which included a heatwave in New Delhi, India (pictured above), were the highest ever recorded for April. This makes it the 11th month in a row to set a record, according to the European Union’s Copernicus Climate Change Service. The average global surface air temperature was 15.03°C (59.05°F). Olivine lets cement go carbon neutral 9 May 2024 Replacing 35 per cent of the regular cement in a concrete mix with silica derived from an abundant mineral called olivine would produce a carbon-neutral cement. Subbing 40 per cent or more would make the final cement carbon negative (Royal Society Open Science, doi.org/mtvt). Edited May 19 by SteamyTea Link to comment Share on other sites More sharing options...
JohnMo Posted May 19 Share Posted May 19 Interesting - we are doomed Interesting, but how do you get hold of it and would your structural engineer and BC be happy? Link to comment Share on other sites More sharing options...
saveasteading Posted May 19 Share Posted May 19 54 minutes ago, SteamyTea said: abundant mineral called olivine Abundant. Enough for Norway, whence it comes, or for the world? As if Norway needs more income from the ground. On further thinking, it doesn't matter who uses it if there is reduced carbon released. Link to comment Share on other sites More sharing options...
SteamyTea Posted May 19 Author Share Posted May 19 5 minutes ago, saveasteading said: Enough for Norway, whence it comes Is serpentine similar, we have loads of that in Cornwall, and know how to make an area an industrial wasteland better than most. 1 Link to comment Share on other sites More sharing options...
sharpener Posted May 23 Share Posted May 23 On 19/05/2024 at 18:30, SteamyTea said: and know how to make an area an industrial wasteland better than most. At least the mine engine houses perched on the cliffs are quite picturesque, unlike the slate quarry remains at Blaenau Ffestiniog. And the Eden Project is an imaginative use for a humungous clay pit. Promising new process for recycling old concrete into new cement here https://www.cam.ac.uk/stories/cement-recycling. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted May 23 Author Share Posted May 23 7 hours ago, sharpener said: Promising new process for recycling old concrete into new cement here https://www.cam.ac.uk/stories/cement-recycling. That is interesting, lower CO2 cement and steel at the same time. I read, or heard, that ashphelt/Tarmacadam is the most recycled material by volume, mass and price. Just need to start working on that. Link to comment Share on other sites More sharing options...
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