We've had a few threads about concrete gunsafes, vaults, and safe rooms recently. Now I'm curious about different types of concrete.
There is this guy in WA that spend 30 years building a bunker by hand:
Pretty amazing stuff.
But what is 5-bag cement? Anyone have any information on the various types of cement?
Also, what cement is the best for vaults and saferooms? What cement is the best against bullets? I've seen some concrete break apart vs a hammer. On the other hand there was this episode on mythbusters where they were trying to drill a hole in an abandoned military building and Adam Savage broke several concrete drill bits.
There is this guy in WA that spend 30 years building a bunker by hand:
http://www.oneofakindhouse.com/fortress.htmlThere are 3 ft concrete walls, using 5-bag cement (20% denser than regular cement).
Pretty amazing stuff.
But what is 5-bag cement? Anyone have any information on the various types of cement?
Also, what cement is the best for vaults and saferooms? What cement is the best against bullets? I've seen some concrete break apart vs a hammer. On the other hand there was this episode on mythbusters where they were trying to drill a hole in an abandoned military building and Adam Savage broke several concrete drill bits.