The surfaces shall then be thoroughly dampened and rubbed with a no.
Rubbed concrete wall finishes.
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.
Apply sandblasted finish to exposed concrete surfaces where indicated.
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.
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.
When finish is not indicated provide smooth form finish as specified above.
Conform to aci 301.
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.
Conform to aci 301.
Blasting operations and requirements.
The water plus the rubbing action brings up a cement paste which results in a very smooth plaster like surface.
Wet rubbing is accomplished on green concrete by a slow speed grinding wheel or disc at the same time applying water.