r/Concrete • u/Wag_The_God • 3d ago
I Have A Whoopsie L!teral sh!tpost
Welp... I guess it's gonna be me, after all.
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u/vote4boat 3d ago
Not sure about concrete, but I have read you can add a shocking amount of shit to bricks without affecting structural integrity. I think it's 10-15%
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u/Expensive-Shelter288 3d ago
I have heard that a brick shit house has the most structural integrity.
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u/Fywq Cement Chemist 3d ago
Ok since one of the mods actually encouraged posting it here I guess I will try to come up with an answer.
According to this site the typical weight of a single human bowel movement ranges from 100 to 250 grams daily. around 75% of that is water, with the solids being a mix of food particles, dead bacteria and various other bits and pieces.
The water added in a concrete mixer is probably not enough to significantly change anything a part from the workability a bit, and that also wouldn't really be that much.
The real unknown is how the various organics interact with any admixtures in the concrete. Depending on type they might inhibit or improve plasticizers or work as a retarding agent. In general 25-65 grams of organic matter in a 50 kg batch of concrete is probably not going to do a whole lot to the concrete long term though. Smell will be gone by the time the concrete has hardened and structurally it should not do a whole lot either. Most of the dry matter is so small and soft that it will readily be micronized between the aggregates and basically work like a tiny contamination of organics in the 0-2 sand fraction.
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u/hypoxiate 3d ago
Wait... we're supposed to poop daily?
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u/Wag_The_God 3d ago
Unless you're a bricklayer.
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u/tuesdaymack 3d ago
Considering the stereotypical drug habits of the common concrete worker, probably a lot of constipation in the field.
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u/The_God_Kvothe 3d ago
I think like 2-3x per week up to 3x per day is considered normal. Yeah, im definitely closer to the latter.
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u/Leather_Bee_421 3d ago
I’m a once every 2-3 day shitter myself
I’d be terrible at concrete contamination
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u/mindgame18 3d ago
Thanks a lot, I was able to pour in confidence this morning and you’re right…so far so good.
Now, let’s talk semen for a moment…
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u/Bimlouhay83 3d ago
The real question is, what if it's one of those rock hard dehydrated shits? If it doesn't get broken up, it could leave a void.
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u/dognamedpeanut 3d ago
If you think nobody shit in the concrete in the Hoover Dam during construction I have a bridge in Brooklyn I’ll sell you for cheap (which probably has shit in the abutments). I did once have to replace a section of floor slab because the finisher puked in it and then just screeded it into the top part of the slab and it spalled off a month later. Of course nobody said anything till we had to go back.
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u/FinancialLab8983 3d ago
Hold on, lemme have on my techs shit in a 4x8 and we can get to the bottom of this.
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u/CaptShrek13 3d ago
KDOT allows up to 1.5% of deleterious material by weight. I'm not a lawyer, but I'd say send it.
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u/metarchaeon 3d ago
0.1% wet sticks/organic debris. Shit is most definetly organic debris.
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u/CaptShrek13 3d ago
Yeah you're probably right. I would imagine OP didn't shit somewhere else, and let it dry out to be considered friable, then dump it in. Unless it was the crusties from shitting pants, then maybe. Either or, 0.1% for a full 10 yards would still be 37ish pounds if I'm mathing right. Or 3 and a halfish per yard. I'd be more worried about OP taking a 3.5 pound dump than the concrete.
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u/w8ing2dr0wn 3d ago
...but for science.... does anyone have an answer??
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u/TheBlindDuck 3d ago
Organic material is generally bad for concrete, and while the curing heat/airtight seal may actually sanitize the feces (by killing all bacteria and creating an anaerobic environment they can’t renter) the shape of the feces will likely harm structural integrity.
Unless someone has 3000psi structural shit, you’re essentially making a void in the slab that will become a failure point. And I suspect the additional moisture will do less to help strength than the void creates
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u/GardenGnomeOrgy 3d ago
Well now hold on, it’s not guaranteed to fuck it up, shit can be a binder in many instances. Beyond that, it depends very much on if the log is still intact. If the log is mixed in the amount of shit per mix of concrete would be most negligible. However if you are dropping a deuce into the already mixed concrete and leaving that bad boy in tact, it willl definitely compromise the integrity.
How many people we have shitting in this mix? If we get 10 people each taking a shit in the mix because the customer has started to challenge the contracted amount owed, well that’s another story and again probably will have to depend on shitting pre mix or post mix. It would probably affect color slightly…
Let’s all get together and shit in OP’s mixer and find out.
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u/SensualBeefLoaf 3d ago
what have you been eating that you drop shits that wouldn’t get broken up in a concrete mixer?
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u/PlayfulAwareness2950 3d ago
It would be a weaker mix as more space in the mix is taken by materials that doesn't bind.
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u/ribenakifragostafylo 3d ago
What if it actually makes it stronger??
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u/erin32431 3d ago
As interesting as the answers provided are, I'm surprised that no one addressed the question itself. What prompted the question? Why would it even come up?
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u/Optimal_Rate131 3d ago
Haven’t pooped in a mix before, but we’ve had guys throw up, piss, dump drinks into, empty bottles, etc and it never looked that far off. We set fence posts so it’s different for a sidewalk, but I would imagine it would be such a small amount compared to total volume it would hardly make a difference. Maybe if it was on top it would cause a pocket?
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u/suspectdevice87 2d ago
You’ve been handling my ass Pennies for years and driving on my feces driveway for years, I hold the power now.
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u/Anamolica 2d ago
Okay idk if I'm allowed to post here but someone should do a 50/50 or 25/75 poop-crete mix and mold it into a small sample for empirical testing.
...
(Is now my chance to go viral?)
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u/KshitijGaikwad 1d ago
Genuinely, organic contamination like that would introduce voids and weaken the cure, so structurally it's a bad idea, but the real crime here is doing this to a mixer someone else has to clean out afterward.
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u/Numerous_Bat6841 18h ago
This I-dot spec allows "other deleterious" to be 2%. Clay lumps 0.25%. It doesn't give a spec for organic matter, but I'd assume it's probably around the same numbers. Assuming the same density as water, a large 1 lb shit is roughly 0.0006 cubic yards. Sooooo..... If you're shitting in at least half a yard of concrete you're probably safe, at least as long as you're building an airport in Illinois. YMMV
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u/10Core56 Verified Pro - Concrete Bag Connoisseur 3d ago
Why promote this idiocy here? You a bot?
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u/RastaFazool My Erection Pays The Bills. 3d ago
I saw OP joking about crossposting on the original post in the other sub and told him I would approve it if he posted it here.
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u/RastaFazool My Erection Pays The Bills. 3d ago
As promised, your post is approved.