exposed concrete work

[babarebaba]

my castings of concrete columns doesnt come neat enough to be left as exposed surface. what do i do to get well finished concrete surfaces. is staining also required to get desired colour?

[babarebaba]

this forum is only about fighting with each other and prove superimacy on others but to help someone......
no one seems capable enough to help on a simple topic like this. may be because of lack of knowledge.

[nanrehvasconez]

IF THE CONCRETE COLUMNS ARE TO BE EXPOSED CONCRETE, THE POURING HAS TO BE ACCOMPLISHED WITH THE AID OF A MECANICHAL VIBRATOR, WHICH WILL ELIMINATE THE POROSITY OF THE CONCRETE, BUT IF THE COLUMNS ARE TO BE EXPOSED AS AN AFTER TOUGHT, YOU CAN APPLY A SAND AND CEMENT GROUT, HERE IN CALIFORNIA THE PROCEDURE IS CALLED SACKING, AT THIS POINT YOU COULD ADD COLOR TO THE GROUT. EXPOSED CONCRETE ALSO CAN BE REFINISHED BY SANDBLASTING WHICH IS MORE EXPENSIVE.

[elitecretesystems]

Another solution is to add a super plastisizer such as Fritzpak Supersizer 7 to your mix.

[Antisthenes]

soy acid stains work very nice after the fact

and maybe you just need to polish(diamond resin pads) it to get a little into the aggregate