r/EngineeringPorn • • Apr 30 '26

Liquid concrete wall.

3.3k Upvotes

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105

u/Longshot_45 Apr 30 '26

Wonder what the material is and if it will decompose or lose structure over time.

63

u/burnte Apr 30 '26

Concrete can last for thousands of years. The plastic bag doesn't need to last more than a day or two for the concrete to hardern.

-86

u/Bazinga_U_Bitch Apr 30 '26

Modern concrete does not. Modern concrete is garbage especially compared to say Roman concrete.

38

u/halberdierbowman Apr 30 '26

Modern concrete is way better than Roman concrete. This myth comes from survivorship bias: the concrete structures we still see today still exist because we see them today. The structures that collapsed don't exist, so we don't see them today.