When finish is not indicated provide smooth form finish as specified above.
Rubbed concrete wall finishes.
Pour a generous amount of tung oil directly onto the surface.
This will be used for cleaning off your tools.
Cleveland concrete contractor ron simonetti says a smooth rubbed finish done with an abrasive stone should look the same as a grout cleaned sacked finish.
However stone rubbing has to be done soon after the forms are removed within a day or two at the latest while enough moisture is still in the concrete to create a paste that will fill the bug holes.
Grind smooth any drips or bumps of concrete left on the wall.
Fill one bucket halfway with water.
Then before the mortar dried the sur face would be rubbed with a wad of clean dry burlap to remove surplus mortar and to fill voids.
Conform to aci 301.
The best way to apply tung oil is actually with 400 grit sandpaper.
The salt finish concrete surface is obtained by inserting coarse rock salt crystals using rollers on the freshly placed concrete surface and washing it off with streams of water after the concrete is set.
You want the surface to be as flat and clean as.
Blasting operations and requirements.
Rubbed finishes smooth rubbed no later than the day following formwork removal wet surface and rub it with an abrasive such as a carborundum brick until a uniform color and texture are produced.
Apply sandblasted finish to exposed concrete surfaces where indicated.
Mix a slurry that is three parts portland.
Sacking produced a finish for cast in place concrete surfaces after fins from oils and bond breakers had been removed by filling in pits and air holes by dampening the surface and rub bing mortar all over it.
The water plus the rubbing action brings up a cement paste which results in a very smooth plaster like surface.
This finish gives a decorative rough subtle texture and skid resistance to plain or colored concrete.
How to rub out new concrete walls step 1.
Instead consider tung oil which gives a harder finish.
The surfaces shall then be thoroughly dampened and rubbed with a no.
16 carborundum stone or equal abrasive to create a uniform surface paste.
Conform to aci 301.
Applying hand rubbed finishes to wood.