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Using Explosives to clean out a concrete truck 

Demolition Dave Drilling and Blasting
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Myth Busters said It couldn't be done! Removing a load of set concrete from a concrete truck agitator bowl is a very difficult and time consuming exercise. The traditional method involves working from the inside with a jack hammer and painstakingly chipping it out. In this case we had a small diameter skid mounted mixer and the very limited space inside meant that a full size jackhammer just would not fit, the only option was a small hand held air pick. To compound the issue it was a special mix of very hard concrete with very tough fibre aggregate. Luckily, the guys who took on this job knew exactly who to call for a fast and cost effective solution using explosives, Demolition Dave was able to get the job off to a good start with a conservative but effective blast that lessened a considerable amount of material, opening up significantly more room to move and work inside, without any damage to the machine.
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15 май 2021

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Комментарии : 988   
@paulofurtado4925
@paulofurtado4925 3 года назад
Was expecting to turn into a giant Christmas tree star ... but didnt.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Best comment.
@JonnyBhoy
@JonnyBhoy 3 года назад
You had me at explosives….
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Thank you, please like and subscribe
@JonnyBhoy
@JonnyBhoy 3 года назад
@@demolitiondavedrillandblast oh I did don’t you worry :D
@ZE0XE0
@ZE0XE0 3 года назад
those shots from the inside were fantastic
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
My little DJI Osmo Action Cam does not agree... Thanks for watching ZX.
@yurapit88
@yurapit88 3 года назад
Yea seriously tho loved it
@heartland96a
@heartland96a 3 года назад
Sorry for the camera lose but the view was impressive . The positive effects of explosives , what lead the concrete outfit to you ? Hope you had a helper or two to dig out the rubble for you !
@petermcgreevy6386
@petermcgreevy6386 3 года назад
@@heartland96a just rotate the drum and most of the rubble would probably get out.
@amandagardner565
@amandagardner565 3 года назад
i was going to ask what the fibre was, but waited until the end and you told us. . another great result Dave.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Indeed, thanks for joining in Amanda.
@Warhawk76
@Warhawk76 3 года назад
Me too, I was wondering if concrete was made of mud and straw in Australia...
@tomruth9487
@tomruth9487 3 года назад
Amanda Gardner, Yeah that fiber is why they couldn't just jack hammer it out. Maybe if they would have got to it in the first 12 hours or so.
@SilvaDreams
@SilvaDreams 3 года назад
@@tomruth9487 Yeah whoever did that likely did it on purpose.
@tomruth9487
@tomruth9487 3 года назад
@@SilvaDreams , Ah good point. I didn't think of that.
@alexandertaylor2951
@alexandertaylor2951 3 года назад
Me:" It's never fun cleaning up someone else's mess". Dave: "let's blast it!" Me: "okay, maybe a little fun". Lol
@davidhandyman7571
@davidhandyman7571 3 года назад
When the dust enveloped the camera on the first shot, I could smell the concrete dust. Well done Dave.
@josephastier7421
@josephastier7421 3 года назад
@D J Down tiger.
@myview5840
@myview5840 3 года назад
Did ya get it all out, nothing worse than your nose bogeys setting like concrete
@jonyemm
@jonyemm 3 года назад
That's the smell of silicosis.
@jonyemm
@jonyemm 3 года назад
@D J i get to play with the other white stuff, concrete. I usually wore my safety specs but respirators never seemed to be around when you needed them. They are also horrible to wear when its 100 out. You can see the dirt marks on your skin from the moisture and sweat from wearing the mask. Few years ago OSHA started pushing for silica safety. It's a pain in the ass. i suppose it is safer but really, what isn't bad for you and what isn't known to the state of California to give you cancer.
@smackflack5771
@smackflack5771 3 года назад
No u couldn't
@gafaff
@gafaff 3 года назад
Thank you so much for this Dave. Ever since the Mythbusters episode, I've always wondered if a skilled explosives expert could have broken up the concrete without damaging the vessel rather than just filling it with anfo and completely obliterating everything. I expect it would have been even easier in their case as it probably wasn't nearly as high strength nor fibre reinforced.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
They just set out to make sensational TV.
@SVPearler
@SVPearler 3 года назад
@@demolitiondavedrillandblast oh it was sensational alright.
@excitedbox5705
@excitedbox5705 3 года назад
That is really how it is done when concrete hardens in the mixer. You would be at it for weeks otherwise.
@isrraelgs7156
@isrraelgs7156 3 года назад
I thought that the whole thing was about to explode but damn they really good with explosives
@ahnilatedahnilated7703
@ahnilatedahnilated7703 3 года назад
Wait a minute! The Mythbusters got the concrete out! There was no concrete left in the truck when they were done. :)
@cpt_nordbart
@cpt_nordbart 3 года назад
Also there was no truck left unfortunately.
@Torontodude20000
@Torontodude20000 3 года назад
@@cpt_nordbart details. 😂
@SilvaDreams
@SilvaDreams 3 года назад
@@cpt_nordbart A minor detail....
@nnnnnnnnnick5557
@nnnnnnnnnick5557 3 года назад
Yeah he should've since it the Mythbusters method, he would've gotten more views garunteed 🤯💥💣
@Torontodude20000
@Torontodude20000 3 года назад
It was a long time ago but from what I remember didn’t they have a FBI explosive specialist helping them out. I think they tried different levels until the big finale.
@swishswish386
@swishswish386 3 года назад
Wow, this is incredible and again I have unintentionally learned something, great camera placement. Hmmmm I can only imagine how you loosen the lid on a new jar of Vegemite at your house 👍
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Hahahah - yeah, 2 turns of det cord gets any lid off!
@gregjones3660
@gregjones3660 3 года назад
That's brilliant. No vegemite no problem!
@andrewsmith9104
@andrewsmith9104 3 года назад
@@demolitiondavedrillandblast And then another strip of det cord to get the vegemite off the ceiling?
@brianpatrick9480
@brianpatrick9480 3 года назад
Fascinating Dave! Round two you could see the blast wave rebound on itself
@KenSmith-bv4si
@KenSmith-bv4si 3 года назад
Retired Boilermaker, they used to have us go in the boiler with a 10 gauge shotgun. We used it to shot the clinkers out between the tubes in the superheat section. The trash burner in Newark NJ used ammfoe and broom handles to blast the clinkers out using the concussion, the whole boiler would shake and move.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Common practice Ken.
@troytippins3676
@troytippins3676 3 года назад
I have been told this was how mixers were cleaned out after concrete set. Thanks for showing this.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
This is the quick way.
@tokencivilian8507
@tokencivilian8507 3 года назад
Great views from inside during the shots. I was wondering what the fiber was, glad you answered it at the end.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Glad you enjoyed it!
@woowooNeedsFaith
@woowooNeedsFaith 3 года назад
I was really surprised that you could see anything at all after the blasts. And those blasts looked very gentle. Interesting...
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
They were relatively gentle little blasts.
@timothypirnat3754
@timothypirnat3754 3 года назад
Love it Dave. Glad you filmed it and took us along. I've heard about this before, and I saw Mythbuster's overkill version, but I've never seen it done properly. I bet you have to worry about splitting the barrel somewhere.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
The Mythbusters version was all about making sensational TV.
@brucemorris6319
@brucemorris6319 3 года назад
I worked in a silica mine a few years and used dynamite to blast down the walls. We would drill 6 holes 10 feet deep each about 5 feet apart. Load 6 sticks of dynamite in each hole spend about 4 hours packing the holes . Blast them all at once and hope for the best. If everything goes right all you would hear is a snap the the wall would come down then the work started in 3 days .
@mrbmp09
@mrbmp09 3 года назад
Why wait 3 days?
@brucemorris6319
@brucemorris6319 3 года назад
@@mrbmp09 got to wait at least 3days so everything has fallen. Don’t want to be working around walls and have a bunch come crashing down on you. I had it happen to me once while close to wall . Wall came down I just barley jumped off tractor in time . Couldn’t see nothing of tractor but a little of back tire spent the rest of the day digging tractor out.
@gregstone1306
@gregstone1306 3 года назад
Well that's a unique job. I would expect its tough to guess how much without the drum failing. My admiration.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Starting small is a good plan.
@arneanka4633
@arneanka4633 3 года назад
Do it like Jamie Hyneman. Grab a crate of dynamite, then take another one. Just to be sure, take a third. Put all sticks in a pile inside and light up. Success.
@hardrockdemolition1346
@hardrockdemolition1346 3 года назад
That's a perfect example of where the autostem product works great. Very effective and you can drill the small charges with a hammer drill.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Just checked out your channel, subscribed and will fully check it out later, we will talk more about autostem.
@huffy737
@huffy737 3 года назад
Well now, I found a new channel I enjoy on the last day of our lockdowns. I know what I’m doing. Subscribed and onto his next video!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
That's great news!
@tda2806
@tda2806 3 года назад
That's cheered my Monday morning up, thanks Dave.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Glad to hear it Tim.
@davidflanagan1653
@davidflanagan1653 3 года назад
That was very different and some very reinforced looking concrete would not have considered blasting an option you are a true professional look forward to your' next post.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Thanks for tuning in DF.
@Exal191
@Exal191 3 года назад
Lol he said “portable mixer” like someone would have this in the back of their truck for a day job
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Ok, relocatable mixer.
@thebrowns5337
@thebrowns5337 3 года назад
I carry one in my rucksack
@Mogliz0rz
@Mogliz0rz 3 года назад
@@demolitiondavedrillandblast so... how big is a big one? Like, too big to drive about? Built on site and demolished after? Or is it like for massive factory production or something?
@keeganwebber
@keeganwebber 3 года назад
@@Mogliz0rz very much bigger than this and they construct an on site batch plant and disassemble it to move to the next job
@luna_rose__
@luna_rose__ 3 года назад
Straight and to the point, good angles, decent explaination, hekkin great video my guy!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Thanks Summer! Plenty of similar videos on this channel, please like and subscribe.
@CarputingYT
@CarputingYT 2 года назад
Demolition Dave is awesome. Thanks for making these videos, these are super cool and you have a great personality. Hope to see many more!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 2 года назад
More to come!
@bobw222
@bobw222 3 года назад
"You were only supposed to blow the doors off." Should have called Dave...
@gregjones3660
@gregjones3660 3 года назад
Yeah they were probably just supposed to give the drum light cleaning...
@user-vp1sc7tt4m
@user-vp1sc7tt4m 3 года назад
Incredible job with no apparent deformation of the steel especially given what was need to account for the carbon fiber thread inclusions.
@peterfitzpatrick7032
@peterfitzpatrick7032 3 года назад
Its not carbon fibres... its glass-fibre, polypropylene, steel or macro-synthetic fibres... www.roadstone.ie/product/fibre-reinforced-concrete/
@SmallMartingale
@SmallMartingale 3 года назад
This was very cool! Man I love RU-vid, where else would you be able to see such a specialized job in real life? You get into some pretty cool stuff, Dave!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I totally don't watch any TV at all these days David.
@markfryer9880
@markfryer9880 3 года назад
@@demolitiondavedrillandblast Too many interesting videos to watch on RU-vid .
@flailios
@flailios 3 года назад
I recognised the fibres having co-operated a concrete batching plant. We used to sell concrete with the fibres, but the customer needed to provide their own wash-out. The issue with washing-out at the plant is the water recycling system. The fibres clog the pumps used to move the water back into the batching system after washout. It wouldn't surprise me if washout was refused to the operators of this barrel.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
That is something that I had never thought of.
@_Matsimus_
@_Matsimus_ 3 года назад
Should have put a fire mission down on it. 5 rounds HE Fire for effect!!
@durt214
@durt214 3 года назад
Direct fire from M777 or some rounds from the Dita spg could do the trick.
@bobjones6468
@bobjones6468 3 года назад
Pffft damn Arty
@brooksieluke
@brooksieluke 3 года назад
Repeat or say again?
@JT-CO
@JT-CO 3 года назад
@@brooksieluke If I hear repeat over the radio, I'm putting ANOTHER 5 rounds on target.
@captainzobra2828
@captainzobra2828 3 года назад
@@JT-CO That's how people die. I have nightmares of saying that word on the radio. I have deleted that word from my vocabulary.
@Wairoakid
@Wairoakid 3 года назад
Great work Dave. Having sat in a concrete skip(kibble) in my youth with a jackhammer and needle gun for hours removing slab concrete I can only be amazed at this. 100mpa!!!!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Only you would know the difficulty WK, I had never heard about concrete that strong either and the fibres make it a lot more difficult they tell me.
@carolrobinson7779
@carolrobinson7779 3 года назад
Over the years I've come across old front porch stoops we would beat on for days with a jackhammer just to get them manageable to move. A handful of times we surrendered and used as fill once we had chipped away enough to pour the replacement. These were originally poured @1950-60 era in North Missouri and always had river rock aggregate. If shifting hadn't rendered them unusable they would have lasted another century. I always dreaded bidding one of those jobs they never were easy or the same!
@mark77193
@mark77193 3 года назад
@@carolrobinson7779 I remember coming across that sort of thing back when I was doing landscaping. Banging away at it all day with a breaker mounted on a Bobcat, just to get it small enough to pick up with the machine. Once, gave up and laid a new path using the old as the base, after finding the old to be up to 300mm thick, with 20mm thick rebar in it, and also tied into the building's foundation. That one was at a early 1950s era LDS church chapel. Those were never easy jobs!
@timbrwolf1121
@timbrwolf1121 3 года назад
@@carolrobinson7779 Yeah river rock driveways in missouri are built like roman roads. Indestructible.
@brucet8551
@brucet8551 3 года назад
another fascinating video Dave .hats off to the driller.the dust and noise in there would have been extreme.thanks for posting.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Glad you enjoyed it Bruce.
@hammyh1165
@hammyh1165 3 года назад
It's morning here and I'm late leaving for work and I noticed Dave has posted.... Think I'll just watch it 😂
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
He, he, thanks Hammy.
@markfryer9880
@markfryer9880 3 года назад
You’re going to get yourself stuck in traffic!
@philthycat1408
@philthycat1408 3 года назад
A full load of concrete left inside to set solid. That's passive sabotage.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
No, just a hydraulic failure in this case, have done other truck mixer that definitely was sabotage though.
@philthycat1408
@philthycat1408 3 года назад
@@demolitiondavedrillandblast just that we had that happen as well and managed to shovel and bucket most of it out. Warm work though.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
And the smell of ammonia?
@macw2234
@macw2234 3 года назад
I've always wondered how they clear out set concrete in a bottle. Fascinating stuff
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
It's more common for a guy with a jack hammer to spend a few days in there, this one because of it's small size would not allow a big jack hammer, only a small hand held air pick.
@richardgordon5001
@richardgordon5001 Год назад
Normally they use air chippers - I work at a ready mix plant and every so often the trucks drums need chipped out and we hire people who come in with hand held chippers climb in the drum and do a great job without the risk of blowing up the truck or a fellow employee
@richardgordon5001
@richardgordon5001 Год назад
So this seems to be strictly for entertainment and that’s about it
@billraccio3835
@billraccio3835 3 года назад
Dave love your videos!!! Your humor and descriptions as well!!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Glad you like them! Please like and subscribe and share.
@cosmopezzolla996
@cosmopezzolla996 Год назад
That was a very different blast! Shows your skill level controlling those shots! Amazing! Very cool video
@demolitiondavedrillandblast
Glad you enjoyed it!
@brock8199
@brock8199 3 года назад
I don't miss cleaning those. Never got to use dynamite, closest thing we did was let em freeze really good then hit em with hot water.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
That is an interesting idea.
@TurinTuramber
@TurinTuramber 3 года назад
Does that heat shock crack the concrete effectively?
@corthew
@corthew 3 года назад
FYI, there are clays that, when mixed with water and poured into holes, will expand to hundreds of times their mass and break rock and concrete up. It takes a day or so but its probably cheaper than the explosives. And most of the time you don't even need to be there, so no wasted man-hours.
@MrSunrise-
@MrSunrise- 2 года назад
Dave does that, too!
@mariarust.
@mariarust. 7 месяцев назад
Could you please help me find this clay? What is it called?
@johnplaid648
@johnplaid648 3 года назад
It's off of a cement truck and the motor used to rotate the mixer broke and once the mixer stops rotating the cement hardens. There are companies where all they do is jack hammer concrete to salvage the mixer.
@JointerMark
@JointerMark 2 года назад
I've heard that if sufficient sugar is added to the concrete prior to it hydrating it actually won't come up completely to strenth and is then easier to remove. Wouldn't want to be the chapter in the barrel stirring in the sugar though. Lol!
@wdwerker
@wdwerker 3 года назад
Skill , experience and wanting to satisfy the customer instead of thrilling for ratings seems effective ! Bravo !
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Thank you very much!
@Richard-ob5zn
@Richard-ob5zn 3 года назад
I always said there was more to Dave then means the eye. He's got a bag of tricks for everything.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
You Betcha.
@FishFind3000
@FishFind3000 3 года назад
3:24 what are all those small strings hanging off the concrete? Did they mix a batch of glass fiber reenforced concrete or is that some steel wire?
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Short bits of carbon fibre as aggregate / reinforcement.
@embracethesuck1041
@embracethesuck1041 3 года назад
@@demolitiondavedrillandblast Damn, no wonder they went to blasting.
@lucassoilz7876
@lucassoilz7876 3 года назад
Man that is awesome.... not sure if you can but have you thought about doing it with the material in the air so when you blow out the debris falls away from what’s stock....
@kingcons7845
@kingcons7845 3 года назад
Great job Dave! Thank goodness your only small bloke, what a tight fit, there’s not many blokes who could do that job! Well done.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Hi Con, you might be physically excluded from this line of work.
@cyberhornthedragon
@cyberhornthedragon 3 года назад
that was awesome!! when younger i had to climb into one of them to 'clean' the bits out of
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
It's a young mans job all right.
@cyberhornthedragon
@cyberhornthedragon 3 года назад
@@demolitiondavedrillandblast oh i couldnt do it now not one legged wear'n a prosthetic heck i have a time climbing a ladder LOL
@neotheseattledj
@neotheseattledj 3 года назад
that giant swirl of smoke in slowmo is amazing
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Sure is.
@jcadult101
@jcadult101 2 года назад
"customer is happy", driver that mucked the load holding the jackhammer in the corner is ecstatic!
@BlueWaterRedBlood
@BlueWaterRedBlood 3 года назад
My buddy used to remove concrete from trucks for a living. They would go in with jack hammers, sludge hammers, picks and wherever else they could use to break it up. I bet he would have loved this method over being in 95 degree heat inside a oven that’s 120 or more running a jack hammer for 10-12 hours a day all summer.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
It's a hard job Rusty.
@jimshoe6828
@jimshoe6828 3 года назад
Good job Dave👍👍 Good thing you're not claustrophobic 😁, that looks really tight place to work 😳
@sixfootbear
@sixfootbear 3 года назад
I am claustrophobic and there is no chance that you would have got me in there.
@Hutch400
@Hutch400 3 года назад
Great job , always a pleasure watching a seasoned pro.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Glad you enjoyed it
@morrislouiseeagle7161
@morrislouiseeagle7161 3 года назад
Oooh that was different - more marvelous blasting fun - cheers for sharing it with us - sending regards xx
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Glad you enjoyed it
@LLImprovement
@LLImprovement 3 года назад
Definitely earned your pay cheque that day. Don't think id enjoy that one haha
@bobjoncas2814
@bobjoncas2814 3 года назад
...sure beats a car wash...lol...good job, stay safe and have a great week..
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I think I needed to go through a car wash after working in there Bob.
@bobjoncas2814
@bobjoncas2814 3 года назад
@@demolitiondavedrillandblast ...lol..
@paulsharpe3794
@paulsharpe3794 3 года назад
Hi there this video was on my sejest homepage and I thought it would be interesting and it was so much that I have subscribed and shered it to loved the slow mow with the detonation and then the shock wave
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Thanks for joining us Paul.
@johnwad7468
@johnwad7468 3 года назад
Back in early 1990s I worked in a limestone quarry. Another part of the company was a lime plant. The lime kiln was,I'm guessing,200 ' long about 15' in diameter. To clean the slag out of the kiln,the company had a 10ga. Shotgun on a tripod and some workers stood there all day, maybe several shifts and fired 10 ga. Slugs at the paddles inside the kiln. I've seen 80 lb lime bags,dozens of them,full of spent paper 10ga. Shotshells.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
That is a lot of lead to spray around inside!
@jwaterous224
@jwaterous224 3 года назад
Demolition Dave is where the "work actually" meets actually works. Sweet results again, Sir Dave! The filth never ends but seriously, kinda wished you were wearing respirator PPE though. I really enjoy your, no excuses; work, progress, egress shows here on "the tube."
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Look again JW, I had my Sundstrom SR100 half face respirator on, there is no way I would go in there without it.
@alfadoofus
@alfadoofus 3 года назад
Much better than misbusters, You accomplished something useful thanks for the show and give that brave camera a fresh new battery for it's troubles :)
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
The camera needed a good clean with compressed air between shots.
@davenz000
@davenz000 3 года назад
They got to a point where it was all explosions for show (& the American audience). Did little miss Muffet sit on a tuffet? Lets blow up the tuffet with C4 to find out!
@markfryer9880
@markfryer9880 3 года назад
@@davenz000 The only good thing about all of those explosions and the use of very high speed cameras was that you got to see the formation and expansion of the shock wave. I found that to be very interesting.
@patallen5095
@patallen5095 3 года назад
Great work Dave! Explosives to the rescue once again!
@TyphoonVstrom
@TyphoonVstrom 3 года назад
Dave, thoughts on placing charges then filling the barrel as much as possible with water to contain and channel the blast better?
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
There is really not much extra room for water as the concrete fill is close to overflow normally.
@MrSmeagolsGhost
@MrSmeagolsGhost 3 года назад
100mpa with carbon fibre, that’s a special batch someone left sit. Expensive mistake or bad planning on someone’s part.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Yeah, most probable cause is usually hydraulic failure or electrical failure.
@jayschafer1760
@jayschafer1760 3 года назад
@@demolitiondavedrillandblast I was wondering about that. Depending on the relative price of the machine it might be worth having a backup generator and a good stock of repair parts handy. Otherwise, if the machine is cheap (which I doubt) just take the financial hit if the machine or power go out, pay to dispose of the machine in a landfill, and buy another.
@etelmo
@etelmo 3 года назад
Carbon fibre aggregate :O The respirator is *well* worth it, I mean concrete dust is nasty but dammmnnnnnnn that's a whole other level.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
For sure, we had a vac system sucking through it but not the space I would like to be in very often.
@MFKR696
@MFKR696 3 года назад
Indeed. CF dust is like a bunch of little multi-pointed razor-blades. In your lungs, it's like Asbestos on steroids, and then some.
@Tiger351
@Tiger351 3 года назад
Had a good laugh when you mentioned Mythbusters Dave. Top job getting that lot out, kinda wondering what the customer was using it for now.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
This machine was in an underground mine site when the mix went off, it is currently being "serviced" and will then return to the mine.
@MrBigbear1684
@MrBigbear1684 3 года назад
Spoke to a cement guy here in Jamaica and if for any reason he can't dump his load and it starts to harden ( starts seeing stream) he dumps a 10 pound bag of sugar in the mix so when it does harden its super weak and easier to break up.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
The sugar works well when you are able to mix it in, this one had a hydraulic failure and was not able to turn and also I guess that since it was a shotcrete mix it was probably also fast setting.
@mikeysgarage3697
@mikeysgarage3697 3 года назад
Yeah that's a bit more sensible than just loading it with 500lbs of ANFO, lol! (I seem to recall that was how much they used, don't think the quantity was actually mentioned until one of the look-back episodes)
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
It was probably a bit heavy handed.....
@johndoe1909
@johndoe1909 3 года назад
@@demolitiondavedrillandblast the actual experiment where carried out with small amounts of explosives tonprove the method. And their conclusion was thatbit was plausible and likely worked. Then they got a bit carried away, and just let us say thatbthe cement truck ceased to exists.
@RolandElliottFirstG
@RolandElliottFirstG 3 года назад
Nothing better than a confined explosion.
@rockman531
@rockman531 3 года назад
Aaahhhh....the smell of freshly exploded concrete & carbon fiber dust! Nothing quite like it! GREAT job, Dave! AND great camera work, too!! Stay safe, Jim
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I tried very hard not to get any smells of it Jim.
@patdexter9188
@patdexter9188 3 года назад
I've been inside of those with a big air hammer chiseling out the concrete. The truck broke down or they evacuated the mine I can't remember. Its an underground mixer tank. They fill up the spraymecs to reinforce the shafts after they have been drilled and bolted. Hog wire is held down by 4" or so square plates from the bolts. Then sprayed with 3" or so inches of concrete. Interesting process with the fibers to increase the strength.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
That is exactly whet this one is used for Pat.
@patdexter9188
@patdexter9188 3 года назад
Ya I thought so. Looks like the normets drum we used. Those fibers makes it impossible to clean by hand
@munromark1400
@munromark1400 3 года назад
Thanks dave and well done. If you ever need to break Chinese concrete a loud sneeze will bring down the tallest building.HA HA HA.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Ahh... my coffee just came out my nose.
@henryrollins9177
@henryrollins9177 3 года назад
But it's the US infrastructure that is falling apart...! 😀
@Don.Challenger
@Don.Challenger 3 года назад
@@henryrollins9177 Not because of rubbish materials less than a decade from their initial construction date, but rather from negligent management of proper maintenance practices to suppress necessary taxation rates or unconscionably enhance profit.
@vincentbush9865
@vincentbush9865 3 года назад
True Story no concrete but also no truck! ! ! !
@The_JEB
@The_JEB 3 года назад
@Steve Arthur unless its that hospital housing wu-flu patients that collapsed a week after it opened.
@SmallMartingale
@SmallMartingale 3 года назад
I think whoever let it set in there should be the one that has to clean it out! 🤣
@fusco515
@fusco515 3 года назад
I think he quit
@jakubkopec9313
@jakubkopec9313 3 года назад
@@fusco515 I think he was fired or shot. Maybe both.
@markfryer9880
@markfryer9880 3 года назад
@@jakubkopec9313 Hung, Drawn, Quartered, Shot and then Sacked.
@josephastier7421
@josephastier7421 3 года назад
If a mechanical issue is preventing the barrel from rotating, it can't be discharged. It happens.
@boltonky
@boltonky 3 года назад
Thanks for letting us know the aggregate i wondered why it looked reinforced and great work cause i know that even drilling the holes to put the explosives in will be a mission
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Yes, nothing easy about this job.
@waynelsexton3488
@waynelsexton3488 3 года назад
Awesome! I’ve never seen such clear footage right by an explosition. Rip to that camera
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
There is some more of this coming sometime soon Waynel, the camera was OK. As turned out it was damaged soon after when the wind blew the tripod over and the lens hit a rock.
@HughzieTube
@HughzieTube 3 года назад
Mythbusters method worked just fine! lol
@ShainAndrews
@ShainAndrews 3 года назад
Thanks for telling us the concrete specs. I wrongly assumed it was fiberglass. Interesting job for sure.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Thanks for watching Shain.
@ChrisB257
@ChrisB257 3 года назад
Lovely demo of small charges delays sequence... great shots Dave. Looked like a pretty good result. Claustrophobic work place!!! :)
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Very tight place to work Chris.
@jasethesmiff5683
@jasethesmiff5683 3 года назад
I was busy yesterday..... this is right up my alley
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Oh, really? I have a job for you, hope you are not to large.
@sharkeyist
@sharkeyist 3 года назад
Wow, 100mpa and fibres!! Be interesting to know what that was being used for, 👍🇬🇧👍
@arneanka4633
@arneanka4633 3 года назад
That's for my garden barbecue. My neighbor always try to steal things from me. From now on, he'll need explosives.
@SharkFishSF
@SharkFishSF 3 года назад
@@arneanka4633 too bad, your neighbour is now going to call Dave when you're out and say it's his house and he wants to remove those.
@keithjurena9319
@keithjurena9319 3 года назад
What is is used for? ASCE concrete canoe competitions. Concrete countertops..sometimes done upside down with the surface poured first using a fine aggregate surface, then the fiber reinforced main layer. Expensive as frig for anything else.
@SharkFishSF
@SharkFishSF 3 года назад
@@keithjurena9319 how long does it last?
@troyezell5841
@troyezell5841 3 года назад
"Unlike Mythbusters we're going to do it the way it works." Lol, I love it! Mythbusters were so full of themselves at times.
@TheSgtFrank
@TheSgtFrank 3 года назад
They may have done it wrong on the show but you can't deny the end was impressive
@rorschacht8478
@rorschacht8478 3 года назад
What's wrong or right depends on your goal... Mythbusters didn't intend to clean out the truck.
@troyezell5841
@troyezell5841 3 года назад
@@rorschacht8478 I understand that, but on multiple episodes, and it was theme not the just the title of the show, they stated the myth was busted. They both promoted themselves as being very scientific but oftentimes they were not.
@rorschacht8478
@rorschacht8478 3 года назад
@@troyezell5841 That's true but they were making a show. You should check out Tested on youtube, adam explains and talks about the show a lot.
@troyezell5841
@troyezell5841 3 года назад
@@rorschacht8478 I don't mean to sound overtly aggressive toward the show, it was just a bit excessive at times. You make a good point.
@Monkeysic
@Monkeysic 3 года назад
Some cool shots! Probaly no handbook on how much and where to place the shots for that! Good job!!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
No sir, not much written on this at all, but has been common practice around these parts for many years.
@knotbumper
@knotbumper 3 года назад
The one time I helped clean out a barrel on a barrel truck, I probably did more damage with my chipping gun than you did shooting it. Nicely done. Would you ever consider "mud packing" the shots instead of drilling? Also, what size (diameter) hole were you drilling and how deep?
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I doubt that mud packing would work very well here KB, they were tiny blast holes, contact me if you need to know the exact details.
@markissboi3583
@markissboi3583 3 года назад
there you go Mythbusters dave can do it . 💹
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I wonder what else they failed at that I could do??
@davidnull5590
@davidnull5590 3 года назад
I don't think Mythbusters bothered to drill any holes, who knew that drillholes can make it work? Also, Mythbusters didn't really care if the concrete came out or not, it was just TV. There is a yard at a concrete company in Los Angeles that has more than 10 full size mixers filled with concrete just sitting for years. I think they don't bother trying to get the concrete out anymore, they just eventually cut the mixer up for scrap steel.
@tropifiori
@tropifiori 3 года назад
Grandfather was a mason. He knew of a guy who let the concrete set in a mixer like that. The boss made the guy bust it out with a sledge and a chisel
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
That would be the worst month of his life.
@likita779
@likita779 3 года назад
Amazing, the alarm sound is louder than the explosion 👌
@kuebbisch
@kuebbisch 3 года назад
You are a brave man, Dave. I would have had the yellow gas bottle visible in the last shot removed (welding gas/acetylene?). Acetylene is really unstable, and a nice shockwave could have set the bottle off, removed the wall and put the mixer in low earth orbit... Glad it worked out for you!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Fear not, the yellow bottle was only a compressed air receiver.
@ArthurDentZaphodBeeb
@ArthurDentZaphodBeeb 3 года назад
Great job Dave. Would have loved to learn the backstory of how that happened.
@assassinlexx1993
@assassinlexx1993 3 года назад
The boss's son😉🤫
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I don't actually know the back story on this one Zaph.
@markfryer9880
@markfryer9880 3 года назад
@@assassinlexx1993 Well if it wasn’t the Boss’s son then who ever did it owes the Boss some very expensive booze to make up for it. That is assuming that they weren’t sent down the road straight away!
@assassinlexx1993
@assassinlexx1993 3 года назад
@@markfryer9880 I would be surprised who did this. Would have a job.
@JP-wb1oo
@JP-wb1oo 3 года назад
It happened to me once. Basically, this can happen if something happens while en route to deliver ready-mix concrete. A breakdown, caught in traffic, etc. Broken axles are a common incident for concrete mixers maneuvering through new construction then the truck gets stuck with no place to unload. You only got about 3 hours or so, depending on the mix and temperature. My story is I was driving a loaded 8 yard (16 tons) mixer and the driver side frame rail broke while I was driving, the drum was leaning heavily to the passenger side. The first thing the mechanic said to me was "How'd you keep this thing upright?" I dunno, I just held on for dear life. Meanwhile the truck sat for too long while the mechanics put a massive weld on the frame to get it back to the shop. That truck sat in the back of the yard for years with the cured concrete still in it.
@830jps
@830jps 3 года назад
I would have shouted into the mixer, "FIRE IN THE HOLE!"
@marcmckenzie5110
@marcmckenzie5110 3 года назад
Demolition Dave, I really feel for you. I can’t fathom anyone not washing out a mixer, big or small! Wow.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I think it had a hydraulic fail Marc, not much they can do then.
@marcmckenzie5110
@marcmckenzie5110 3 года назад
@@demolitiondavedrillandblast Never occurred to me - that feels better!
@TheTheo58
@TheTheo58 3 года назад
This was a special concrete mix in the which had harden in the mixer? Were these explosives low velocity or shape holes drills for the charges? To break the concrete over several blasting operations? I would suspect an explosive charge could blow a hole in steel.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Hi Theo, the explosive use here was an interesting cocktail of small amount of very high velocity high explosive and some smokeless powder (low explosive). Yes if the explosive charge was too close to the outer steel drum it could damage it. Considerable care was taken when drilling the holes to avoid this.
@dwightarnold6980
@dwightarnold6980 3 года назад
I WAS wondering how they cleaned them out at the end of a YEAR!
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Most of the regular clean out is just removing build up because over time it gets thicker and the capacity reduces, this is a whole different level of disaster when a full load goes off inside.
@cocospops9351
@cocospops9351 3 года назад
@@demolitiondavedrillandblast Word for word, that's what she said.
@BrightRaven777
@BrightRaven777 3 года назад
Unlike Mythbusters . . . LOL. Those guys were always so confidently incompetent.
@josephastier7421
@josephastier7421 3 года назад
Mythbusters was a quasi-scientific entertainment variety show. The talent "not knowing what they were doing" was part of the act.
@tauntdragoon
@tauntdragoon 3 года назад
Hey at the end of the day they had no cement left or truck for that matter
@steelosm
@steelosm 3 года назад
Good video. Would there be any advantage in inverting the drum after the charges are set so you can use gravity to assist.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I would not dare with this particular unit as it is only one a light frame that is not bolted down here and would likely tip over. even when you do this with a set concrete truck they get a bit scary.
@guerradan1958
@guerradan1958 3 года назад
Cool!! I was wondering if you were to put more explosives to finish clearing out the barrel. Use to blow a bunch of things in the military. Loved working with C-4.
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
You like the old "White Noise" hey! I have to tread a fine line here Dan, very easy to overload and break these things.
@jasethesmiff5683
@jasethesmiff5683 3 года назад
100mpa, 100 metric tonne crushing force to force it to deform. Carbon fibre is similar to using mesh. Thats some pretty tough stuff
@GARDENER42
@GARDENER42 3 года назад
Great video as ever Dave. I was wondering what the straw like stuff in the concrete was, as I've never heard of carbon fibre being used in concrete. I shall now bugger off to Google to look at the whats & whys.
@gumelini1
@gumelini1 3 года назад
It serves instead of rebar in some applications
@markfryer9880
@markfryer9880 3 года назад
@@gumelini1 Particularly in complex or narrow shapes and profiles or where the risk of concrete cancer from corrosion rust spalling is too great.
@bill3641
@bill3641 3 года назад
Curious , why were the safety placards blurred on the clear air S-H 13 ?
@sighpocket5
@sighpocket5 3 года назад
Nice!!!! (Always wondered if it was "feasible" to do that to a barrel? Thanks!!!)
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Sure is.
@PaganWizard
@PaganWizard 10 месяцев назад
What is the cost difference between salvaging mixers in this condition, or worse, as opposed to replacing them??
@demolitiondavedrillandblast
@demolitiondavedrillandblast 10 месяцев назад
Cost of replacement was higher but the big issue was waiting time for a new one.
@17hmr243
@17hmr243 3 года назад
have u seen or used the oil well coke can sized shaped charges? that would be fun way of coring the center out? shaped charge or “jet” perforator
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
I know the ones FF, core a suitable hole drop a shortened length of perforation charge in and let it rip, interesting concept, might be a bit savage.
@teamidris
@teamidris 3 года назад
So many questions :o) Is the drum bigger now, is it better to wait a month so the concrete is fully cured and more brittle, would water soaked in make it crack harder, how close to the steel dare you drill?
@demolitiondavedrillandblast
@demolitiondavedrillandblast 3 года назад
Your very correct, I started on one once that was quite hot inside and too soft to drill, ended up they got in and hammered it out quick smart
@teamidris
@teamidris 3 года назад
@@demolitiondavedrillandblast It is very bizarre stuff :o) And hell on earth to gas torch the steel that is touching it.
@Photosynthesisbeing
@Photosynthesisbeing 3 года назад
Mind doing a follow up on how good the explosives did before you attack it with a chipping hammer. Cheers mate.
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