Conform to aci 301.
Rubbed concrete wall finishes.
Wet rubbing is accomplished on green concrete by a slow speed grinding wheel or disc at the same time applying water.
Blasting operations and requirements.
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.
A popular easy to apply and long lasting finish is called rubbing when you rub out a new concrete wall you are applying a thin coat of portland cement and literally rubbing it with a sponge float to create an attractive and durable finish.
Apply sandblasted finish to exposed concrete surfaces where indicated.
The surfaces shall then be thoroughly dampened and rubbed with a no.
The water plus the rubbing action brings up a cement paste which results in a very smooth plaster like surface.
Immediately after removing the forms form ties shall be broken back a minimum of three quarters inch from the surface honeycomb voids and other surface defects grouted.
When finish is not indicated provide smooth form finish as specified above.
16 carborundum stone or equal abrasive to create a uniform surface paste.
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.