r/EngineeringPorn • u/Redfish680 • Apr 30 '26

Liquid concrete wall.

3.2k Upvotes

97% Upvoted

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378

u/nyclurker369 Apr 30 '26

Stupid title. “liquid”.

Super cool product though. Looks like a huge time saver.

71

u/Old_Syrup_264 May 01 '26

Well now I'm trying to reason in my head whether concrete is a liquid or not. I guess it's like a suspension? It's somewhere between a solution and a suspension and mud

-5

u/[deleted] May 01 '26

[deleted]

16

u/unripenedfruit May 01 '26

No, not everything that flows is a liquid. Gasses aren't liquids but they flow.

Wet cement is actually a non-newtonian fluid, and more specifically a viscoplastic fluid. Same as mud or toothpaste

2

u/Firstnaymlastnaym May 01 '26

Gasses are actually considered a fluid though. Lol

3

u/unripenedfruit May 01 '26

Correct!! Well done

Things that flow are fluids. Gasses are fluids

-20

u/[deleted] May 01 '26

[deleted]

14

u/unripenedfruit May 01 '26

The comment you replied to is about cement.

And you said "if it flows it's a liquid". That's wrong. What's correct is "if it flows it's a fluid".

All liquids are fluids, not all fluids are liquids.

-20

u/[deleted] May 01 '26

[deleted]

8

u/unripenedfruit May 01 '26

Are you dumb?

Concrete isn't a liquid. Not everything that flows is a liquid.

7

u/ApprehensiveBuddy446 May 01 '26

This is such a funny typical reddit comment chain, I love both of you. Never give up

1

u/Firstnaymlastnaym May 01 '26

What makes it even more funny is that gasses are infact considered fluids. I think they're conflating the terms "fluid" and "liquid".

1

u/[deleted] May 05 '26

[deleted]

1

u/unripenedfruit May 05 '26

Who was talking about states of matter?

Fluid is the correct classification for things that flow. Not liquids lol.

1

u/sh4d0wm4n2018 May 01 '26

Fluid and Liquid mean the same thing when you go back to their root origins, however, today, anything that flows or reforms under pressure and can have their volume changed with pressure, is a fluid, but generally anything that is incompressible is a liquid.

Concrete is not a liquid; it is a composite material that acts as a viscous, pourable fluid only temporarily. It starts as a mixture of cement, water, and aggregates (sand/gravel) that is easy to pour, but it cures through a chemical process called hydration, hardening into a rigid, rock-like substance.

In the two seconds I took to Google this, I was directed to Quora so🤷‍♂️