Dry Pour Concrete: How Deep Can you Make it?

I gotta pick all this up what I was thinking was that there was no way that the water was going to make it all the way to the bottom however some people want to see if this actually works let's just get to it we're going to experiment with completely dry pouring this tube form in our last video we filled it to different Heights and then we put water in between the layers some folks said that's not exactly dry poor I get it you guys want to see it a little bit differently and we're here to experiment we're going to fill this four foot tube form all the way to the top and what we're going to learn is how far that water can actually penetrate I'm going to bury this maybe three or four inches into the ground so it's stable other than that though I'm just going to put water from the top I'm not going to soak the outside because some of the moisture May penetrate in through the outside another thing is can you put one of these in there this is a pretty drastic example four feet of concrete is way more than what you're ever going to use for a concrete slab so using 60 pound bags a 4000 PSI sack rate high strength concrete mix all right here goes the fresh bag [Applause] foreign [Applause] how much this pains me hopefully this is not against the rules of dry poor so because we poured this guy completely dry and usually when you set Concrete in you have to shake it a little bit tap it a little bit just to make sure that the bubbles come out everything settles incorrectly please YouTube keyboard Heroes let me know if this is acceptable so that's settled down quite a bit let's go ahead and put our ankle bolt in now I'm going to set this to the side so I'm going to go ahead and put another bolt on the other side I'm just giving an opportunity to resettle itself so in the true Spirit of dry poor no mix concrete pouring we're going to go ahead and Mist at five seconds being sure not to disturb that upper layer so here goes that top layer is nice and dark now we're going to come back in one hour and do another mist all right let's wait one more hour we'll come back give it a shower so it's been another hour I think that because we have such a small surface area the experiment is not going quite as well as with a large slab where you can Mist it and get more water in that larger surface area so I'm gonna Mist a little bit more heavily now that the top layer is a little bit settled in uh I want you to come and see I'm going to put my finger here yep it's still kind of soft let's miss a little bit more see if we get some more penetration so we're done with this misting we're gonna come back in another hour and do some more watering so now we're ready to really soak this tube form let me change it from Mist to shower I'm going to do a light showering I like that I don't want any of the water on the outside I'm afraid that that may bias the experiment so some of the water could absorb through the cardboard so because this is such a deep tube form we're going to change the watering periods to every 20 minutes if you follow the conventional dry pour method they have you water it every hour and sometimes every two hours three or four days is Not Practical for anybody we're going to shorten the period the water in periods to 20 minutes see what we get I'm gonna give it a go I'm gonna soak this up until we get that small water lip right there and let it soak in then we'll come back another 20 minutes and do the same thing all right we'll come back in 20 minutes now we're going to crack it open and see how much of that water actually made it to the bottom I'm pretty hopeful let's cut it open and see what it looks like so here's something I want to show you looks like this top layer didn't fully adhere to the rest of the concrete and I think the reason is that it was too light of a Mist in that top layer so that's just something to watch out for when you're doing dried pour concrete make sure that that first layer of misting is sufficient enough so that the first layer is about an inch deep [Music] oh that is a lot of fracturing out [Applause] so my camera didn't catch it but uh I just pulled this out by hand had this in the hole I drilled it all the way in I was able to just knock it out by hand and it destroyed the concrete entirely so you can see here where it just kind of fell apart on me yeah I'd say that's a big negative for dry poor these anchor bolts are supposed to be able to be drilled into these Piers after their cast and the concrete is cured but it's not very well it's not holding together very well as you can see so yeah it's it's crumbling a lot doesn't make me very hopeful for the rest of the concrete beneath this okay I think that's enough testing of these anchor bolts this one did hold up pretty well but I was pretty surprised by the anchor bolt that we pulled out of there [Applause] holy smokes [Applause] that's pretty cool foreign [Applause] so it's not very far down we can already see a bunch of dry concrete right there so from the top of the form to there it's 19 inches are you ever going to be pouring these concrete forms completely dry and then watering them only if you're super lazy definitely other methods to do this I think that if you're ever pouring a concrete slab that's 19 inches hopefully you're smart enough to be able to do the lower layers first and then do the upper layers and save yourself some time with the dry pour technique or some hybrid of it so I'm going to cut the rest of this open just to see what it looks like maybe we got lucky when we had some water penetration on the other side maybe there's some moisture that seeped up from the bottom we don't know let's go and find out no I'm kind of surprised this looks pretty good let's crack it open and see what it does what it looks like on the inside and that's how much moisture we got from the ground but once again look at that it's very crumbly oh gosh and it's leaving dense down the entire length no I don't know gosh I don't know that I would even use this for a slab there aren't any voids so it looks like our tapping method may have been able to sink all those pockets in and we didn't have any channeling of water so this is the one that I slightly mixed together yep I got it this one's not dry this one is dry but they're both cured remember curing happens within 24 hours drawing is about 28 days per inch really what I'm doing is I want my anchor bolt back let's go and get it so now that we've made a huge mess I think that settles it with dry pour concrete you can only make it about 18 inches deep and that's very hopeful I would say if you are doing a dry pore concrete slab the most you you should do is four inches if you do any more than that you're probably going to run the risk of it not soaking all the way through I'd be curious to see what the actual PSI strength of this is guess I'll get the dustpan I do want to keep this one I feel like there's a snail show in there

Channel: Appalachian Wood

Views: 20,611

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Id: 1PRI_SGHHrc

Length: 9min 21sec (561 seconds)

Published: Fri Apr 21 2023