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Dissolve cement?

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zira

02-27-2002 14:56:48




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I bought a Wisconsin motor off a cement mixer for parts. One of the parts I wanted was the head. Turns out that what looked like normal trash between the fins was actually hardened cement. Any ideas on how to loosen or disolve the cement without destroying the aluminum head?

Thanks




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devansmeme

05-14-2005 09:08:35




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
I have been searching on the Internet to find something to clean cement off of vinyl siding and white french doors. A sloppy contractor when pouring our patio and steps splashed concrete on the vinyl siding and french doors outside. I need something to clean it without scratching the material. I really appreciate any help and suggestons anyone may have.

A Big WV Thank You!!



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Jim K

02-28-2002 06:53:30




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
Sandblast it if you can.



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evetS

02-27-2002 22:14:44




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
zira, Its the initial bond to the alum. that you need to be concerned with, once its free it should easly slide out, maybe w/a tad of convincing. Maybe some sort of spray lub. and let it soak for a while. spray other splash areas to and they may scape off as well. good luck.
Steve



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evetS

02-27-2002 22:12:07




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
zira, Its the initial bond to the alum. that you need to be concerned with, once its free it should easly slide out, maybe w/a tad of convincing. Maybe some sort of spray lub. and let it soak for a while. spray other splash areas to and they may scape off as well. good luck.
Steve



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Sean

02-27-2002 21:46:12




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
Try using something called CLR.You can get it almost anywhere.wal-mart,ace hardware,etc.CLR stands for calcium,lime and rust.it is made to dissolve hard water deposits and rust stains.I guarantee it will dissolve cement (calcium based i believe).I used some CLR on some rust stains on my old garage floor.it took away the rust stains alright.along with some concrete under it.The cement was only 3 years old and it ended up with a washed stone finish.soak your part in the CLR overnight and use a nylon bristle brush in the morning to clear the cement away.repeat as necessary.You will know its working because it lets off some bubbles.Let me know how it works.

Sean.

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old bones

02-28-2002 08:00:53




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 Re: Re: Dissolve cement? in reply to Sean, 02-27-2002 21:46:12  
have no experience with CLR, but the wife use something called "Lime Away" to remove calcium deposits in our bathtub, and it sure took care of the lime, but it also ate the chrome finish off the tub drain assembly.

now a bit of humor: in a manufacturing plant where i used to work, the old time welders used to break in the greenhorn assemblers by sending them to the tool crib to get a pail of "liquid weld remover". of course the tool crib was in on it and would hand the greenhorn a coffee can filled to the rim with soapy water, with a parts brush in it, and told him not to get it on his skin, at any cost. the greenhorn would walk slowly back to the assembly line carrying this stuff with outstretched arms. then one of the old timers would "accidentally" bump the greenhorn and get the "liquid weld remover" all over him. usually it resolted in a scream and a mad dash to the water fountain. one guy actually ran into the washroom and crawled into the 6' round wash basin before anybody could stop him and tell him it was a joke. factory workers always seem to have a sense of humor.

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Sean

02-27-2002 21:43:26




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
Try using something called CLR.You can get it almost anywhere.wal-mart,ace hardware,etc.CLR stands for calcium,lime and rust.it is made to dissolve hard water deposits and rust stains.I guarantee it will dissolve cement (calcium based i believe).I used some CLR on some rust stains on my old garage floor.it took away the rust stains alright.along with some concrete under it.The cement was only 3 years old and it ended up with a washed stone finish.soak your part in the CLR overnight and use a nylon bristle brush in the morning to clear the cement away.repeat as necessary.You will know its working because it lets off some bubbles.Let me know how it works.

Sean.

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Leon

02-27-2002 16:55:32




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
I would think concrete expands and shrinks as I see heat buckling concrete roads. Spray a little freon on the concrete and tap it lightly with a punch and hammer. MaMa hide his sledge.



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Junkman

03-01-2002 19:33:28




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 Re: Re: Dissolve cement? in reply to Leon, 02-27-2002 16:55:32  
the buckling of road surfaces is caused by the freezing an d thawing of the material under the road.



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Junkman

02-27-2002 16:30:29




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
You might try soaking the head in a thin oil for a couple of days. This will sometimes let the lime (sticky part of cement) to release. If this doesn't work, go to your local mason's supply and see if they have any "Sure Kleen 600". This product is a lime solvent but I am not sure what it will do to the head. Good luck!



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old bones

02-27-2002 15:54:08




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 Re: Dissolve cement? in reply to zira, 02-27-2002 14:56:48  
don't know of a solvent to dissolve it, and if there is one, don't think i'd put it on something i wanted to save. try a small chisel and chip it out SLOWLY, working from the outside in, SMALL pieces. this will work, and won't damage the cooling fins , if you have a lot of patience. my wife says i have all kinds of patience. she says i must have it all stored up somewhere, cause i haven't used any of it since she's known me-29 years.

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Don Young

02-27-2002 20:36:37




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 Re: Re: Dissolve cement? in reply to old bones, 02-27-2002 15:54:08  
Hydrocloric (muratic) acid is commonly used to dissolve cement. Don't think it will do anything bad to the aluminum but is not good on parts of people.



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GPWT

03-01-2002 09:26:30




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 Re: Re: Re: Dissolve cement? in reply to Don Young, 02-27-2002 20:36:37  
Aluminum has a higher standard reduction potential than hydrogen. In plain English, the muriatic will chew up aluminum till there's nothing left!



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F14...Sorry

02-28-2002 04:13:01




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 Re: Re: Re: Dissolve cement? in reply to Don Young, 02-27-2002 20:36:37  
But muriactic acid eats aluminum big-time.

Don't ask me how I know...":^(



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charlie

02-28-2002 15:44:41




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 Re: Re: Re: Re: Dissolve cement? in reply to F14...Sorry, 02-28-2002 04:13:01  
i work for a concrete company.one of my jobs is to clean equipment.on the tools that have engines i use a small hammer drill with a slip clutch and a 3/16ths bit.don't put alot of pressure on it.stay close to the fins,make a sieres of holes and slide the chunk out.i do this on mostly honda engines and have never damaged one.use a tap-con bit.good luck



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