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) - 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
--
73 de KG2V - Charles Gallo
Quality Custom Machine-shop work for the radio amateur (sm)
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|