hardening a concrete floor by adding a topping mix.

[woodchock]

Can anyone provide some tips about how to add a topping mix to a premixed slab floor (ie before it sets) ie in order to create an extra hard floor surface (top few mm)., thanks

[Gaza]

use a higher MPA concrete mix, only down issues is its harder to work with and costs extra

[jiggy]

Have a look at this link...Hardeners/Densifiers - Concrete Decor (http://www.concretedecor.net/All_Access/705/CD705-Technology.cfm).