Saw i saw clips of this machine laying concrete down on gravel and rocks and rails for the trains https://vm.tiktok.com/ZS8mnMfM8/ .
But those concrete bars don’t seem to be anchored to anything so how strong are they actually?
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This is how rail is laid down in many countries.
The concrete bars (they’re called ties) are submerged in the gravel (called ballast) which is pretty damn heavy. There’s a few other steps as well, like shaking the track to let all the ballast settle tightly into place.
This style of track has been in use for 100s of years and is generally preferred with a few special exceptions.
Combined with the weight of the tie it’s pretty unlikely the track is going anywhere, even with high speed trains making turns along it. In some cases I’ve heard of extra tight corners being built with heavier ties to account for the increased strain, but that’s rare and such corners would be avoided for other reasons anyway.
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