The concrete industry likes to say that concrete is recyclable at the end of its life, although almost 80 percent of recycled concrete ends up as fill and road bases. But there is another problem; as the UK concrete centre notes, it is strong stuff that lasts a long time.
It is more than likely that a modern concrete building will come to the end of its useful life because no further use can be found for it, rather than because the concrete failed due to age.
Read more: treehugger.com