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Polished Concrete Help.

 
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Old 05-05-2015, 08:37 PM   #1
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Polished Concrete Help.


Im working on building a table. It is a pine base with a polished concrete top. Im having a hard time filling all of micro holes. Seems like everytime I do a fill/ slurry coat it creates more holes or just doesnt seem to fill all of them. Looking for some tips on getting my holes filled.
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Old 05-05-2015, 08:48 PM   #2
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Re: Polished Concrete Help.


Is spreading the slurry pushing through where there are holes covered by a thin layer or just not filling?

What is your slurry mix?

Were you going for that look?

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Old 05-05-2015, 08:59 PM   #3
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Re: Polished Concrete Help.


I wanted an industrial sort of look to it with a slight modern esk. Slurry coats have typically been arcylic admix/water, cement and plasticizer. Tried quite a few times. Also looking for some advice on sealers for the table. Thanks
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Old 05-05-2015, 09:08 PM   #4
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Re: Polished Concrete Help.


liquid acrylic is 50% water. only use a liquid acrylic for hydration. I think your problem is that your trying to fill the hole without leaving extra material on the surface. when you do this you will always pull out and leave a depression. slurry the entire top, leave it all messy and proud and polish/sand back down to a level surface.

the only way you should be adding holes to the surface is by polishing down into it. if your only applying slurry then your just not getting them filled.
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Old 05-05-2015, 09:16 PM   #5
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Re: Polished Concrete Help.


Tried this one last night but i used water with the acrylic, maybe I will try just straight acrylic. Thanks for the advice. I want to get this table wrapped up here soon.
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Old 05-05-2015, 09:40 PM   #6
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Re: Polished Concrete Help.


Your slurry needs to cure completely as well. You may be trying to polish it to soon and it is to soft.
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Old 05-05-2015, 10:49 PM   #7
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Re: Polished Concrete Help.


Quote:
Originally Posted by overanalyze View Post
Your slurry needs to cure completely as well. You may be trying to polish it to soon and it is to soft.
+1 on that. i try to slurry with majority CSA cement for a 1-3 hour cure.
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Old 05-05-2015, 11:08 PM   #8
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Re: Polished Concrete Help.


Looks like a mix & placement problem.

Awful lot of pock marks/voids to fill & have look good.
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Old 05-07-2015, 10:15 AM   #9
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Re: Polished Concrete Help.


I have the same feeling about the mix. I think there might have been to much air. I got some topping mix so im going to give that a go to see if it works. Does anyone have any recommendations on sealers?
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Old 05-24-2015, 08:33 AM   #10
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Re: Polished Concrete Help.


Use a densifier on polished concrete. It fills the holes and then expands to create a unpenetratable/inpenetratable. ...whatever the word is... surface.
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Old 05-24-2015, 08:41 AM   #11
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Re: Polished Concrete Help.


Did you build that upside down on melamine? What was the problem? Should you have vibrated more.. and troweled more?

Oh oh wait.. you didn't use the corner spoon on that did ya? Well that's your problem. Ya didn't know how much concrete was on the form. Need ta get cha wun of them..
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Old 05-26-2015, 10:27 PM   #12
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Re: Polished Concrete Help.


I just polished this one. I did a slurry coat, left it messy, then hit it again the next day.
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