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Re: [TowerTalk] Jackhammer removal of tower base difficulty?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Jackhammer removal of tower base difficulty?
From: K8RI <K8RI-on-TowerTalk@tm.net>
Date: Thu, 03 Nov 2011 01:01:49 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 11/2/2011 10:30 PM, Charlie Gallo wrote:
> On 11/2/2011 Rick Karlquist wrote:
>
> ...snip...
>
>> In all three cases, the technique used was to get a
>> very low paid person to spend an entire day with a cheap
>> electric jack hammer and shave little pieces off of the
>> concrete.  Very labor intensive.
> ...snip...
>
> One way that works well believe it or not are the "chemical demolition" 
> compounds (if I remember right, they are basically bentonite clay)
It is and it's very common.
> - one trade name is dexpan
>
> You drill a series of holes, put the chemicals in, add water, and wait, a few 
> hours later, you come back to find cracked concrete - the issue is of course 
> the rebar, which can complicate things

If done along the rebar the concrete will come right off.

73

Roger (K8RI)

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