Do you know how to make cement with your wood ash? Eliot, an expert instructor at Wheaton Labs for the 2023 Permaculture Technology Jamboree, does! In this short clip, Eliot simplifies the intricate world of wood ash processing, transforming this often-overlooked resource into a sustainable building materials - wood ash cement. https://www.youtube.com/watch?v=35RSTsHkgkQ
Primitive Technology has a video on making wood ash mortar and building a brick hut using it. The process is likely too time and material intensive to make mass concrete quantities, but if you have a wood fire anyway, you may well be able to make enough mortar to build things.