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Couldn't you instead of making solid concrete blocks fill them with junk, using just a little concrete to make the shape right?
by lordnacho 6y ago
Couldn't you instead of making solid concrete blocks fill them with junk, using just a little concrete to make the shape right?
- thechao 6y agoThey are, already. They use a type of rock "glue" to fuse together rubble — in some cases old broken up concrete. The GP comment is a pretty basic HN middle-brow response.