Build compost boxes, raised beds from eps

hi … some ideas about eps as light concrete …  i just won the energy-globe award of vietnam for ideas ho to use eps … added to  concrete … it is sustainable in the way that you may use it again for new concrete appliances … you may create filling bricks to build  easy to cool or heat houses … has anyone experience about the proportion how to mix optimal … hi from wolfi

see youtube channel  nms.eberstalzell