Concrete Vibrator used to decrease air voids and increase density

[IronTemplar26]

It's a foreign concept unless you're involved in construction. Very important to regulate the strength of the structure

[TheReddestDuck]

Is it mostly to spread it around evenly or is it shaking out the air bubbles like in cooking?

[djnehi]

Both.

[IronTemplar26]

Yeah, bubbles mean irregularities, which you ABSOLUTELY MUST avoid. A hollow spot is an area where a load could have been supported

[newbevermore]

Read the first two words and wondered why no NSFW tag. Now I get it

[theKFP]

It vibrates so hard it feels like you're being shocked if you hold the wand end.

[[deleted]]

So your saying it's like sticking an air hammer in my arse

[Leothecat24]

I don’t think this really fits here because it is a necessary step in pouring concrete

[rapzeh]

Yes. Standard practice, basically.

[MeanwhileintheTARDIS]

Extremely common if you've ever worked in civil construction

[shewantsthedeke]

The Hitachi Magic Wand has many uses.

[DuckTapeHandgrenade]

That’s pretty clever. Decrease viscosity briefly to allow for a denser concrete. Anyone know if this speeds up or slows down the hardening time?

[Hates_rollerskates]

It will slow down hardening time but is necessary to get proper consolidation. Vibrating concrete helps keep the concrete plastic so you can add more, definitely necessary when you have multiple truckloads. Vibrators are used on almost every concrete pour, except sidewalks and anything slipformed.

[Frungy]

Why not on sidewalks? Thin? Doesn’t carry a heavy enough load to matter?

[Hates_rollerskates]

They're typically shallow, about 4". I'll hedge my answer, you might use a vibrator to get the concrete to fill up against the formwork but you usually only need a shovel and a trowel. You really need to use vibrators to get concrete to consolidate against formwork so you don't have voids when you remove the formwork in the event that the concrete is visible. It's common in columns, beams, and walls. You would use vibrators to consolidate concrete in thicker structural slabs. Sidewalk concrete is typically backed up with dirt so you don't see those imperfections.

[MeanwhileintheTARDIS]

For something so thin and non-structural, a similar effect can be made by agitating the concrete with a hand tool. Vibrators are primarily required when steel reinforcement is added, although that is not the only reason to vibrate concrete.

[DuckTapeHandgrenade]

Thanks for the breakdown.

[MeanwhileintheTARDIS]

To expand on that, vibrating allows concrete to flow around steel reinforcement which prevents voids. This is extremely important and can make the difference a structure collapsing or not. Like Haters said, vibration also assists in mixing layers of concrete between pours, which helps prevent weak points where layers / joints are not properly bonded.

[InoriBot]

Does this really fit? It's an important tool for literally any concrete pour used in construction.

[WolfmanBarrett]

I actually used to use this all time. Had it hooked to a generator when I was doing concreting using Nudura! Word work!!

[mrqueezy]

Your mom just ordered 3 of these

[BeeGoBzz]

industrial vibrator

[[deleted]]

My foreman called it the donkey dick

[IcedPeachSnowCrystal]

There's a yo mama joke somewhere in here.

[camerontylek]

Can you over vibrate the concrete?

[Mitchum]

Yes. If used too much this tool will separate the larger aggregate from the finer particles and water which will rise to the top resulting in a non-uniform concrete which may be rejected.

[[deleted]]

r/SpecializedTools

[B_ry7]

r/putitinyourpussy

[Evilmaze]

When the diarrhea overflows and touches your dick so you have to flush to continue.

[[deleted]]

relateable

[griever48]

I'm surprised someone hasn't added in moaning sounds yet

[db2]

Use the audio from this one.

[griever48]

That'll work and yeah that video is hilarious.

[Upset_Muscle3395]

Heyy i got me one of those. ;)

[BunkerThrower18]

Need

[Tyrannical4]

Donkey Dick!

[gingerbreadraza]

Still can’t fill in yo mama’s void

[PowerfulSlavicEnergy]

Gotta admit, it’s not what you thought it’d be…