Box Mines Closed ?

NewStuff

NewStuff

New member
wormster said:
FFS!!!!!

- People lay off the talk of angle grinders, gasaxes and overtightening bolts, let the place lie quiet for a wee while, keep comments about such ideas OFF A PUBLIC FORUM!!

Hanson's et al, will have any forum that mentions the quarry pegged and watched - waiting to pounce!!
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You may want to untwist your knickers a touch, they'll chafe otherwise.

I deliberately didn't say anything specific because of reaction like yours, you would think I'd just rocked up in your front room and shat on your couch.
If they really want through, it doesn't matter one iota what we say or don't say, or what Hansons do or do not watch.
 
royfellows

royfellows

Well-known member
I think he posted with tongue in cheek.

I am happy to wind the buggers up, I dont go near the place, and my organisations dont do gates and grills.

Let the good times roll
:LOL:
 
wormster

wormster

Active member
NewStuff:

My comment may have been a bit forceful, I don't often "stand on the hose" on here, but out of ALL of the forums related to Underground/Aboveground exploration, this thread is about the most inflammatory of the lot, most of the "other" forums are relatively restrained and not much talk of gasaxes etc!
 
SamT

SamT

Moderator
wormster said:
My comment may have been a bit forceful, I don't often "stand on the hose" on here, but out of ALL of the forums related to Underground/Aboveground exploration, this thread is about the most inflammatory of the lot, most of the "other" forums are relatively restrained and not much talk of gasaxes etc!
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Oh the irony  :LOL: :LOL: :LOL:
 
Laurie

Laurie

Active member
Conundrum - Are cavers the easiest people in the world to 'wind up'?
whistle2.gif
 
N

NigR

New member
Dave Tyson said:
Brick acid (basically tech grade hydrochloric acid) is readily available from builders merchants (until Teresa May decides it should be banned!) - dilute 1:1 with water. 

Bonus: wrap a couple of tight turns clean copper wire around both steel or galvanised parts - the electrochemical effect helps...

Speaking purely from a theoretical view as an ex-chemist  ::)

Dave
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A question for you, Dave (or anyone else with the requisite knowledge and/or experience):

Would this method work when dealing with concrete?
 
NewStuff

NewStuff

New member
No, but other chemical methods would.
If you want to remove a slab in your back garden, then drill a few holes and pop in one of a few readily available chemical concrete splitter's  (Youtube "chemical concrete splitting", and a builders merchant for details). Leave for a day or two and the slab is toast, your neighbours will appreciate the only noise being the initial drilling of holes. ;-)
 
Dave Tyson

Dave Tyson

Member
NigR said:
A question for you, Dave (or anyone else with the requisite knowledge and/or experience):

Would this method work when dealing with concrete?
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Hydrochloric acid dissolves limestone completely with the formation of soluble calcium chloride and evolution of carbon dioxide. I don't think its going to replace capping or plug & feathers any time soon as you need quite a bit of acid to dissolve even modest blocks of limestone (and there is the risk of suffocation if done underground!)

With regard to concrete. If this is completely cured the cement part consists of mainly complex calcium silicates together with some free calcium hydroxide. Putting acid on concrete does produce a fizz, but I suspect that is just any surface calcium hydroxide/carbonate being attacked. Over time I would guess the calcium silicates would gradually be attacked and degrade. Given concrete is a mix of mainly aggregate and sand with a smaller proportion of cement as a binder any attack will be slowed by the presence of the unreactive sand and aggregate. Of course if the aggregate is made of crushed limestone then all bets are off! The presence of chloride ions does weaken concrete and this is why concrete for sea defences has to have special additives. It also why there is renewed interest in the ancient Roman concrete mixes as the chemistry of hardening is different and they are extremely tolerant to sea water and gradually become even harder on exposure to it.

So I would go with chemical splitters as noted by newstuff or plug & feathers :)

Dave



 
 
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