Thank you for this! This reminds me of good old RUclips, when interesting people uploaded interesting stuff just to share it with the world. Now it's all about the views.
A keen observation by Dave, " It is pretty easy to make friends when you live in a rocky area.". I expect so. Now, if they just pay the bill. The music for the time lapse photography was synchronized nicely with the cracking of the rock. Although no dramatic rock size reduction in this video, still a good video, and good to see Dave again, doing what he does best.
Hey Dave. Great job (as always!). Bet those rocks never expected so much indigestion from that Vegemite soup you fed them! haha. No sudden loud noises - no sirens - just quiet destruction! See you next time. Take Care, Jim
Great time lapse sequence, Dave. What pressure must have been generated in the expansion during a chemical reaction. This old Industrial Chemist is in awe.
Huge Pressure Alan, if you would like to know what is in it - Calcium dihydroxide ≥75 - ≤90 1305-62-0 Silicon dioxide ≥5 - ≤10 7631-86-9 Sodium Carbonate ≥1 - ≤3 497-19-8
@@demolitiondavedrillandblast , these substances might be in it after it has expanded. wikipedia lists the main components of non-explosive demolition agents as calcium oxide and portland cement. calcium dihydroxide is a fancy name for common builder's slaked lime, which calcium oxide converts to when mixed with water, generating heat and expansion pressure. silicon dioxide is a high tech name for sand.
@vsv nrg Yeah, You must be correct, I did notice that the name did not quite sound right. I can tell you though that it is still a very nasty irritant after it has done it's work and converted.
This method has been used for decades in the Midwest USA. We use the cheaper but slower method of filling the holes with plain water and letting the frost break the rocks. You have to keep filling the holes all winter
There's an ancient Japanese technique I heard about. They would drive snug wooden dowels into the holes and then soak them with water, swelling the wood fibers and cracking out enormous chunks of rock from mountain sides
The music was perfect with the time lapse. And your explanation was good too. The pace of the whole video was a nice change. not that I don't enjoy your go bang vids. Thank You Dave.
That was very very cool to watch , amazing seeing rock as hard as that being broken apart so quickly by chemistry that doesn't go boom . Cheers for the pastoral soundtrack , now I have to watch soylent green again .
Awesome, my grand father was a stone mason who did a lot of the stone work at the Jenolan caves west of Katoomba. His trick was in winter time pour water into holes and cracks in the rock and let the water expanding as it turned into ice break the rock.
That is amazing Peter, I went thought there as a little kid in 1972 and remember seeing all of the drill marks in the vertical sides of some of the walk ways where the rock had been busted out!
Hi Kerry, the tune is stuck in my head from when I was little - Ansett Airlines Australia - "Flight" Commercial - 1970 - ruclips.net/video/bceOzmOXVG0/видео.html
I had no idea that chemical cracking agents existed. I have heard of people in cold climates using the expansion of ice to break rocks. Same principle but maybe less reliable, more time spent. Cheers from the NW USA.
When I was a lad in the 50s and we had a big un to break up, we lit a fire under or alongside it and heated it for a couple of days. In the third day we dosed it with cold water, pretty spectacular break up. No rock drills or specialist chems like thus available then.
Another great video. We use one in the States called Dexpan. It's also quite expensive. I'd guess it's the same chemical make-up as it seems to behave the same as your product. You also have to be careful with Dexpan temperature-wise and safety-wise or it will bite you.
I did consider this option Nicholas, I have feather and wedges to suit the following hole sizes - 14mm - not a chance. 35mm - yeah but I only have 5 units and this would be abusing them on a rock this size. 48mm - no problem... but drilling 48mm holes in this rock with a hand drill is torture, the hole that I drilled were ~36- 37mm ish and that was hard enough. Also the time lapse of the cracking agent makes for better video. Thanks for watching and contributing.
The best kept secret about breaking rock is that the tensile strength is only about 10% of the compressive strength, so if you can get a hole in it and work from the inside you have a chance.
Used to use this down the pit making the start of a new tunnel part way up an existing shaft. Couldn't use explosives as shaft was in use at the time. The only time we ever had a blowout it was all over an inspector of mines and quarries - let's just say he was neither impressed or amused. Great stuff and excellent video
@@demolitiondavedrillandblast hehe ... I know we got a right 'earful' from him ! Carried on though, once he'd 'laid down the law and left ... and we got the job done.
Big chunks! That expanding stuff is a great tool to have - time lapse was very effective - sort of chemical plugs-n-feathers. I forget my classical music a bit but - hmmm - Sebalius 'Finlandia" perhaps.
Dave, have you thought about trying a PAPR (Powered Air-Purifying Respirator) instead of your normal full-face respirator? It might be more comfortable for your long drilling jobs because the work of breathing is lower - I.e. your lungs aren’t having to suck air through the filter.
Mmmmm.... yes, that might be helpful, I have used supplied air respirators (bottle fed) in confined spaces and yes they are a bit easier to breath when you are working hard, good idea 013.
Thanks so much for the video! Two questions though: What tools did you need to drill the hole and how deep did you need to drill? What's the name of the chemicals used?
most of the time when you here that music is for flowers flowering or babys being born but oh no you have used that classical peace of music for destruction , lol well done dave , thanks for the great vid.
What is the name of the chemical that you used, I have several rocks in my yard that are very large and this would be very helpful in removing those rocks
Hello sir advise me we were drilling a tubewell manually and found a rock down 30feets underground it blocked our way we can't drill any further it's very huge and hard .......what precautions can we take to blast it ..thank you
Precautions, safety first, If you are going to blast down there you first must stabilize the walls so the the blast does not cause a cave in, this would normally include rock bolts or some kind of soil nails to attach wire mesh to the walls and then shotcrete. Next issue is stone dust control, stone dust kills! When working underground or is a shaft like this you must use a drill the uses water flushing and not air flushing to control the stone dust. Sinking a shaft by blasting through rock is never easy, very difficult work, can you employ some experienced miners??
Few... hard question, depends on lots of things, if you have small diameter holes and big hole spacing, it may take a few days in cold weather, big holes, closely spaced in summer - a few hours.
Fantastic! Just did my first rock with Dexpan. Lots of work, Hours and hours of drilling. After two days not a single crack. I was defeated. After a weeks time, went back to the rock and it’s all busted. Sooooo satisfying. Curios, do you use a rotary hammer drill? Looks like you were practically sitting on it. I could never find the right amount of pressure when drilling the holes.
Dave.... what drill are you using here? I need one! I'm in the UK and I've got about 10 cubic metres of rock to break off an escarpment. An excavator with a pecker won't touch it
The drill I'm using is an Indian made copy of a swedish Atlas Copco RH658, this one was made by Mindrill or MDS in India. Should be plenty of old drills made by Holman of Cornwell floating around in the UK.
The product I was using is called Expando, other similar products are Ecobust and Dexpan. Cracking time depends on many variables, diameter of holes, hole spacing rock strength, rock temperature etc. Rock is usually broken in 24 Hours or less.
1/ Don't smoke, this helps ruin your circulation, 2/ add extra thick soft rubber padding on the handles and use thick gloves. 3/ Avoid short stroke, high frequency drills.
@@demolitiondavedrillandblast I must be susceptible, I’ve used longer throw and short throw road breakers, sanding machines, HDS drills and oscillating tools and they all gave me numbness and tingling very quickly, that lasted for hours if not overnight. I avoid them these days if I can possibly help it.
Dave, first thing good video 👍 2nd thing, you need a new, slightly larger bucket 😉 3rd thing, I don't think you needed to slow down the reaction by cooling the water, but probably better safe than sorry. Amazing that you can compress a week into about 10 minutes 👍👍
Yes it was! I would like to make more of these, e.g. I have 190Kg of cracking goo loaded in rocks just now that are cracking up nicely, I would love to have done a time lapse of this one but the site is not secure and the cameras would disappear for sure.
@@demolitiondavedrillandblast oh yea, I completely understand! I used to have a piece of property that I had the same issue while building a house on it. I lost my good game camera there.
No minimum gap, the closer the hole, if you are breaking rocks that are fully out of the ground not much force is needed so a hole spacing of 400 - 500mm is OK, if rock is tightly held in the ground, 250mm is good, only use 38mm holes, 35 may be OK, 32mm is too small.
Congratulation on your new YT account Jofer. This product is available under many different names, the brand that I am using is expando - you can get it here if you are in Australia - expando.com.au/ Other popular brands are Ecobust and probably the brand with the widest distribution is Dexpan, you can buy it on Amazon if you can not get it direct.
How does that stuff work? Is it actually a chemical reaction that breaks down the rock in stress areas or does it expand slowly over time with enough force to push the rock apart
@@demolitiondavedrillandblast I'm going to start drilling the pilot holes in the required pattern tomorrow to see how hard they are. And your right about drilling a 1.5 inch hole is a big ask of a portable drill, even a Hilti. It's going to be a process and having a good dozen big rocks to crack up & some I think I'll have to hit twice. Wish me luck.
What sort of rock is it? You can get SDS Max bits in 38mm and they will drill anything if you have enough patience, they're a bit pricey and don't last long though.
@@demolitiondavedrillandblast I think their hard granite. They spew out a white dust when drilling & slow drilling even with a 100 mm drill with a Hilti.
I wonder if you could just wait till winter (assuming the rock is in a place that gets cold enough during the winter), and then use water turning into ice to crack it.
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Thanks for playing that piece of music during the time lapsed vision... Makes me neigbours think i'm a cultured bugger!
You know they like your music when they throw rocks through your window so that they can hear it better!
@@demolitiondavedrillandblast nice dave lol
Very nice time lapse! Reminded me of the old nature shows with flowers opening in the spring.
Thank you very much! I might have to do some video like that now that Spring is coming.
Hellow sir i need this chemicul please your contact
Thank you for this! This reminds me of good old RUclips, when interesting people uploaded interesting stuff just to share it with the world. Now it's all about the views.
Glad you enjoyed it, plenty of other interesting video on the channel.
Great video Dave
I like that you explain exactly what you’re doing.
Not only a demolition expert but a camera man of par excellence.
Thanks 👍 More video coming later this week if I get the time.
Name pls this chimical?
A keen observation by Dave, " It is pretty easy to make friends when you live in a rocky area.". I expect so. Now, if they just pay the bill. The music for the time lapse photography was synchronized nicely with the cracking of the rock. Although no dramatic rock size reduction in this video, still a good video, and good to see Dave again, doing what he does best.
Dave, I was going to say pretty much exactly this, but I am lazy tonight, so, Ditto! Lol
Hey Dave. Great job (as always!). Bet those rocks never expected so much indigestion from that Vegemite soup you fed them! haha. No sudden loud noises - no sirens - just quiet destruction! See you next time. Take Care, Jim
Thanks Jim.
Great time lapse sequence, Dave. What pressure must have been generated in the expansion during a chemical reaction. This old Industrial Chemist is in awe.
Huge Pressure Alan, if you would like to know what is in it - Calcium dihydroxide ≥75 - ≤90 1305-62-0 Silicon dioxide ≥5 - ≤10 7631-86-9 Sodium Carbonate ≥1 - ≤3 497-19-8
@@demolitiondavedrillandblast , these substances might be in it after it has expanded. wikipedia lists the main components of non-explosive demolition agents as calcium oxide and portland cement. calcium dihydroxide is a fancy name for common builder's slaked lime, which calcium oxide converts to when mixed with water, generating heat and expansion pressure. silicon dioxide is a high tech name for sand.
@@demolitiondavedrillandblast Saw a man just like you in the Expando page. Says pressures of up to 14000 psi generated. That's a lot!
@Alan Moffat, Yeah... that's me, I've used lots lots and lots of Expando.
@vsv nrg Yeah, You must be correct, I did notice that the name did not quite sound right. I can tell you though that it is still a very nasty irritant after it has done it's work and converted.
This method has been used for decades in the Midwest USA. We use the cheaper but slower method of filling the holes with plain water and letting the frost break the rocks. You have to keep filling the holes all winter
Does not get cold enough here for that.
There's an ancient Japanese technique I heard about. They would drive snug wooden dowels into the holes and then soak them with water, swelling the wood fibers and cracking out enormous chunks of rock from mountain sides
Can you tell me name of chemical?
The music was perfect with the time lapse. And your explanation was good too. The pace of the whole video was a nice change. not that I don't enjoy your go bang vids. Thank You Dave.
Thanks for your kind words Geoffrey.
Wow, that was a lot slower than I expected but pretty cool how it just pushes it part.
It is a silent achiever Gerbill.
I really enjoy your tremendous personality and the job you do,we’re grateful to have you in our lives!
I appreciate that Scott.
Thanks Dave i must be impatient! My thought was that it would be smashed up by the next morning. The time lapse is fantastic.
It would have been if it were summer time here and the rock was warm.
Cracking job Dave!
Thanks Dave!
That was very interesting, I've never heard of this method for breaking large rocks. Thanks for the info.
Glad it was helpful Mark, it is amazing stuff.
Once you have the air compressors there, might as well just jackhammer the damn thing.
@@BigKeithDog and destroy your arms for a week.
Maybe I’m just watching the wrong videos, but RUclips fed me ads for similar products a few months ago.
@@BigKeithDog easier to jackhammer a few holes and let the goo do the work than to jackhammer the whole thing.
Thanks for the video Dave! Fascinating to watch the cracking goo do it's work over time.
Glad you enjoyed it Erik.
A lovely slice of your work again Mr D -thank you for taking the time and to share with us-much appreciated ♥️😀x
My pleasure
That was very very cool to watch , amazing seeing rock as hard as that being broken apart so quickly by chemistry that doesn't go boom .
Cheers for the pastoral soundtrack , now I have to watch soylent green again .
Why Soylent Green?
This is awesome, thanks for time lapsing it!
My pleasure! Glad you enjoyed it Kelly.
Awesome, my grand father was a stone mason who did a lot of the stone work at the Jenolan caves west of Katoomba. His trick was in winter time pour water into holes and cracks in the rock and let the water expanding as it turned into ice break the rock.
Pretty sure that's how this stuff works but instead of freezing it just solidifies like resin
That is amazing Peter, I went thought there as a little kid in 1972 and remember seeing all of the drill marks in the vertical sides of some of the walk ways where the rock had been busted out!
Brilliant! Each shot I didn't know where to look as I tried to guess which bit would go next, great music to go with it as well, loved it.
Thanks for watching Stewart.
I'm going to have to modify my standard comment...."That broke up real good". Nicely done....slow and steady pressure eventually wins the day.
Thanks TC, I'll have to do another in the summer time when it works overnight reliably.
Puts me in a morning mood to break some rocks!
They say that when the Aswan dam was built you could not get an ice cube in Egypt. Ice water is a brilliant idea. Thanks Dave
Fantastic product Dave did a perfect job the music made me think of the old abc radio program Blue Hills
Hi Kerry, the tune is stuck in my head from when I was little - Ansett Airlines Australia - "Flight" Commercial - 1970 - ruclips.net/video/bceOzmOXVG0/видео.html
That was like some kinda weird flower!!!! Awesomeness, amazing what we can do with some powder and water!!
Sure is.
I had no idea that chemical cracking agents existed. I have heard of people in cold climates using the expansion of ice to break rocks. Same principle but maybe less reliable, more time spent. Cheers from the NW USA.
Been around for quite a while Eric. The popular brand in your country is Dexpan
That boulder just got ROCKED!
Well done as always Dave!!
Thanks for the visit.
Amazing, thanks for the time-lapse. 🔨
Something about the relaxing music and the time lapse destruction of a giant ass rock, was super calming.....
Glad you like it Eric.
Nice vid Dave.
I've seen it used on concrete where I worked before retirement. It works well.
Sure does Clint, concrete is a s soft as cheese compared to this stuff.
Breaking rocks up one crack at a time. Nice time laps.
You got that right! Cracking the world, one rock at a time.
fascinating process! what is the material composition? btw….nice choice of music…
Mostly quick lime JW.
When I was a lad in the 50s and we had a big un to break up, we lit a fire under or alongside it and heated it for a couple of days. In the third day we dosed it with cold water, pretty spectacular break up.
No rock drills or specialist chems like thus available then.
Would have thought the process would be faster. But as you say it’s cool and the reaction is slowed.
Thanks buddy, cracking good job
It's slow but does the job.
Another great video. We use one in the States called Dexpan. It's also quite expensive. I'd guess it's the same chemical make-up as it seems to behave the same as your product. You also have to be careful with Dexpan temperature-wise and safety-wise or it will bite you.
Very similar stuff my friend, there are numerous different brands, would not be surprised if it all comes out of the same factory in China.
Why not use shims/feather and wedges. What are the pros and cons?
I did consider this option Nicholas, I have feather and wedges to suit the following hole sizes - 14mm - not a chance. 35mm - yeah but I only have 5 units and this would be abusing them on a rock this size. 48mm - no problem... but drilling 48mm holes in this rock with a hand drill is torture, the hole that I drilled were ~36- 37mm ish and that was hard enough. Also the time lapse of the cracking agent makes for better video. Thanks for watching and contributing.
@@demolitiondavedrillandblast, Thank you for the insight. Great video. Thanks for putting it together.
I've never heard of this but it makes a lot of sense. Using internal pressure to break boulders.
The best kept secret about breaking rock is that the tensile strength is only about 10% of the compressive strength, so if you can get a hole in it and work from the inside you have a chance.
would it do better if aluminum silicate sulfur - Portland cement ( quick set - high strength ) was used to top off the holes ( like a plug)?
No need, the stuff hardens before it starts expanding, only the smallest amount expands out the top of the holes.
Great video again, Dave; and I LOVE the time-lapse music !
Glad you enjoyed it Ian.
Used to use this down the pit making the start of a new tunnel part way up an existing shaft. Couldn't use explosives as shaft was in use at the time. The only time we ever had a blowout it was all over an inspector of mines and quarries - let's just say he was neither impressed or amused. Great stuff and excellent video
Lucky he did not get an eyeful of the stuff!
@@demolitiondavedrillandblast
hehe ... I know we got a right 'earful' from him ! Carried on though, once he'd 'laid down the law and left ... and we got the job done.
Dave can this chemical work in tight spaces eg. a concrete mixer?
Yes, for sure. You could easily split the barrel though.
Hi Dave! This is a fun way to start a week!
I think so too! More coming later in the week Jim.
Any idea if the rest of that massive statue that the single piece at 1:00 comes from is located anywhere near there?
Big chunks! That expanding stuff is a great tool to have - time lapse was very effective - sort of chemical plugs-n-feathers. I forget my classical music a bit but - hmmm - Sebalius 'Finlandia" perhaps.
This music was Morning Mood by Grieg, Thanks for watching Chris.
Dave, have you thought about trying a PAPR (Powered Air-Purifying Respirator) instead of your normal full-face respirator? It might be more comfortable for your long drilling jobs because the work of breathing is lower - I.e. your lungs aren’t having to suck air through the filter.
Mmmmm.... yes, that might be helpful, I have used supplied air respirators (bottle fed) in confined spaces and yes they are a bit easier to breath when you are working hard, good idea 013.
Wonderful. Loved the time lapse and the change of camera view as it went.
Two cameras HS.
I subbed. Nice video. Boy that took a long time to break up. I am much more of a feathers and wedges type guy.
Thanks for the sub Mark, You will find more than a few feathers and wedges videos on my channel.
Awesome timelapse dave!
Thanks!
Is it notoxi.waths it do too the under grown water down the road.
Thanks so much for the video! Two questions though:
What tools did you need to drill the hole and how deep did you need to drill?
What's the name of the chemicals used?
You need a pneumatic rock drill and a huge air compressor to run it, the hole need to be 2/3 of the depth of the rock. The chemical is Expando.
I was nervously awaiting for that last one to crack. Thankfully it gave way.
It did all crack in the end Alex.
most of the time when you here that music is for flowers flowering or babys being born but oh no you have used that classical peace of music for destruction , lol well done dave , thanks for the great vid.
Thanks Paul.
I had to watch this with the volume muted (where I am working tonight) and it was still entertaining
You must have told it a threat joke. That rock was cracking up alright. Lol!
Will it work for the rock inside the earth?
Yes, but you will need to use more holes and a closer hole spacing to get enough energy.
Great video. May I know What chemical you have used?
I used Expando - expando.com.au/
@@demolitiondavedrillandblast thank you. 👍😊
a good way to do it if you cant use the noisy stuff.thanks for the video Dave.
No problem 👍 Thanks for watching Bruce.
Love your videos! I'm learning a lot, thank you for making them! Have a great day, Demolition Dave!
Glad you like them, don't forget to hit the like and subscribe!
This one of your best 'Goo' splits ever...Thanks for the interesting video. :-)
Glad you enjoyed it KT
What is the name of the chemical that you used, I have several rocks in my yard that are very large and this would be very helpful in removing those rocks
There are numerous products that are similar MW, The most common one in the US is Dexpan.
@@demolitiondavedrillandblast thanks i will look it up.
So do you sell or dump the granite afterwards?
Bit of both Jane, often it gets used on the site or elsewhere.
Hello sir advise me we were drilling a tubewell manually and found a rock down 30feets underground it blocked our way we can't drill any further it's very huge and hard .......what precautions can we take to blast it ..thank you
Precautions, safety first, If you are going to blast down there you first must stabilize the walls so the the blast does not cause a cave in, this would normally include rock bolts or some kind of soil nails to attach wire mesh to the walls and then shotcrete. Next issue is stone dust control, stone dust kills! When working underground or is a shaft like this you must use a drill the uses water flushing and not air flushing to control the stone dust. Sinking a shaft by blasting through rock is never easy, very difficult work, can you employ some experienced miners??
So what would happen if you filled the holes with water and allowed it to freezed during the winter time ? Wouldnt it crack the rock from the frost ?
Nice work!!! What is the name of the mix? Back in the early '90s I did the same thing you were doing with a mix called liquid Dynamite
There are many similar products, Expando, Ecobust, Dexpan etc.
... and what product is it that you have used?
The product I'm using is "Expando" expando.com.au/ there are many similar products sold under different names, Dexpan is probably the most common.
Can it be used to break the rock in the well, and then use the water for drinking? please reply me
I would not recommend that, the product is extremely caustic, alkaline (PH of 13) contains mostly Calcium Oxide.
@@demolitiondavedrillandblast ok thanks
,,,much too quiet, good one, keep safe..my mother in laws cake mix could be used for that,...lol...
Hmmm.... Your a dead man walking Bob.
@@demolitiondavedrillandblast ...not me, but i am worried about my dog. he was the only one, to chew on a chunk...lol..
“it’s 20 past 11 in the morning, and all my holes are successfully filled”
…there are just…too many jokes there 🤣
If you are trapped in Australia and need to find a way out, blink three times on your next video.
Hahhahaha... very good Ryan!
Excellent choice of music
Thanks Richard.
How long does it usually take for a hard rock to crack completely?
Few... hard question, depends on lots of things, if you have small diameter holes and big hole spacing, it may take a few days in cold weather, big holes, closely spaced in summer - a few hours.
Fantastic! Just did my first rock with Dexpan. Lots of work, Hours and hours of drilling. After two days not a single crack. I was defeated. After a weeks time, went back to the rock and it’s all busted. Sooooo satisfying. Curios, do you use a rotary hammer drill? Looks like you were practically sitting on it. I could never find the right amount of pressure when drilling the holes.
Nice work 94, I use an air powered rock drill - much more power than any electric drill. My holes are 38mm diameter (Inch and a half)
How would you suggest drilling 7 metre holes into granite rock?
This can be done, tell me more please
@@demolitiondavedrillandblast sorry it's shale rock
Shale would be easier, what diameter hole would you require?
Dave.... what drill are you using here? I need one! I'm in the UK and I've got about 10 cubic metres of rock to break off an escarpment. An excavator with a pecker won't touch it
The drill I'm using is an Indian made copy of a swedish Atlas Copco RH658, this one was made by Mindrill or MDS in India. Should be plenty of old drills made by Holman of Cornwell floating around in the UK.
What kind of chemical did you use, can you please tell me and how long does it take to crack the rock? thank you.
The product I was using is called Expando, other similar products are Ecobust and Dexpan. Cracking time depends on many variables, diameter of holes, hole spacing rock strength, rock temperature etc. Rock is usually broken in 24 Hours or less.
Hello,
I am happy to follow this channel....
How many liters of water does one bag need 🤔?
Thanks for following, each 5Kg bag needs 1.5L of water
Thank you very much for the quick reply👍🏻🌹
What do you to to mitigate vibration white finger?
Cost wise, how does this compare with using explosives?
1/ Don't smoke, this helps ruin your circulation, 2/ add extra thick soft rubber padding on the handles and use thick gloves. 3/ Avoid short stroke, high frequency drills.
@@demolitiondavedrillandblast
I must be susceptible, I’ve used longer throw and short throw road breakers, sanding machines, HDS drills and oscillating tools and they all gave me numbness and tingling very quickly, that lasted for hours if not overnight. I avoid them these days if I can possibly help it.
Dave, first thing good video 👍
2nd thing, you need a new, slightly larger bucket 😉
3rd thing, I don't think you needed to slow down the reaction by cooling the water, but probably better safe than sorry.
Amazing that you can compress a week into about 10 minutes 👍👍
Thanks for the tips! It was not a week but looked like it because you saw every day twice - Two cameras.
Dave, I'll be your friend, and I don't even need any rocks removed.
Your a champion!
You are the best!!!👍👍👍
Wow, thanks!
Patience rewarded -- slowly but surely.
I was confused by the cold-weather slowness; then I remembered it's winter in the Down Underworld.
Sure is TJ
The Coral Castle builder Edward Leedskalnin used old leaf springs to quarry coral rock in large slabs ..
That was a satisfying time lapse!
Yes it was! I would like to make more of these, e.g. I have 190Kg of cracking goo loaded in rocks just now that are cracking up nicely, I would love to have done a time lapse of this one but the site is not secure and the cameras would disappear for sure.
@@demolitiondavedrillandblast oh yea, I completely understand! I used to have a piece of property that I had the same issue while building a house on it. I lost my good game camera there.
What is the min gap between the 2 holes......????
No minimum gap, the closer the hole, if you are breaking rocks that are fully out of the ground not much force is needed so a hole spacing of 400 - 500mm is OK, if rock is tightly held in the ground, 250mm is good, only use 38mm holes, 35 may be OK, 32mm is too small.
This has me wondering how well this breaking method would work for a controlled demolition of a concrete building.
Yes, done that. Very difficult drilling through all of the 32mm bars though.
@@demolitiondavedrillandblast I figured the rebar would be the sticking point.
How much depth is required in the hole
It is best to drill as deep as you can without going through the bottom of the rock.
Wer i can buy that chemical? and what is the name of that chemical?
Congratulation on your new YT account Jofer. This product is available under many different names, the brand that I am using is expando - you can get it here if you are in Australia - expando.com.au/ Other popular brands are Ecobust and probably the brand with the widest distribution is Dexpan, you can buy it on Amazon if you can not get it direct.
Totally different and well done!
Thanks for watching.
Amazing breaking the rock
How does that stuff work? Is it actually a chemical reaction that breaks down the rock in stress areas or does it expand slowly over time with enough force to push the rock apart
Hi Joe, it just solidifies and then expands slowly with huge force.
@@demolitiondavedrillandblast great stuff mate! Very interesting!
Gees how many days was that? I got at least half a dozen rocks like this to deal with in my yard. This looks like the way for me.
Hi 007, it's a good DIY option, the biggest challenge for most people though is drilling the holes, particularly if the rock is as hard as this one.
@@demolitiondavedrillandblast I'm going to start drilling the pilot holes in the required pattern tomorrow to see how hard they are. And your right about drilling a 1.5 inch hole is a big ask of a portable drill, even a Hilti. It's going to be a process and having a good dozen big rocks to crack up & some I think I'll have to hit twice. Wish me luck.
What sort of rock is it? You can get SDS Max bits in 38mm and they will drill anything if you have enough patience, they're a bit pricey and don't last long though.
@@demolitiondavedrillandblast I think their hard granite. They spew out a white dust when drilling & slow drilling even with a 100 mm drill with a Hilti.
It could be used in borewell or not
Not very good in this application as the rock is very tightly confined and has nowhere to move.
Hi mate, what drill do you use for the holes. I live in Mareeba and have to crack them but can’t find a drill to suit. Thanks Simon.
I wonder if you could just wait till winter (assuming the rock is in a place that gets cold enough during the winter), and then use water turning into ice to crack it.
No where near that cold here TJP.
How many days it take for cracking
Generally 1-2 days, longer when it is very cold.
What kind of chemical do you use sir.
expando.com.au/
*"All my holes are successfully filled 😎"*
10:50
My back hurts just watching you.
Mine is fine, drilled nearly all day today!