[TowerTalk] Removing concrete from the galvanized steel legs

[Richard (Rick) Karlquist]

Doesn't zinc react with the acid????

Rick N6RK

On 6/10/2023 1:05 PM, Steve, NR4M wrote:
> Muriatic acid, with gloves, using a rag.  It will make very short work of the Portland cement in the concrete.   It’s the stuff that is used to etch concrete floors in preparation for painting them with paints, like a two part epoxy. Just was it well when your done.  ( Rub some baking soda on tha area to see if it’s been sufficiently neutralized )
> 
> Steve NR4M
> 
> Sent from my iPhone
> 
>> On Jun 10, 2023, at 3:22 PM, Tom Hellem <tom.hellem at gmail.com> wrote:
>>
>> Alex-
>> Try a wire brush, then touch up any damage to the galvanizing with
>> cold galvanizing compound. Rustoleum and many others sell it in
>> a spray can.
>>
>> Tom
>> K0SN
>>
>>
>>> On Sat, Jun 10, 2023 at 11:54 AM Alex Filippov <wk1ontario at gmail.com> wrote:
>>>
>>> Hi Mates,
>>>
>>> We made a huge error and poured the concrete for the base of LM 354 HD
>>> without covering the galvanized legs and then did not clean it of concrete
>>> immediately.
>>>
>>> Now the concrete got stuck really well. We tried a pressure washer. It does
>>> not produce a good result.
>>>
>>> Any advice on what can be used for cleaning legs without damaging the
>>> galvanization?
>>>
>>> Thanks,
>>>
>>> Alex, WK1O
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