With bagged mixes you normally just add water. The Recipe for the backer coat or Premix self-consolidating are the same as the face coat with a few exceptions. Portland Cement Try to use Type I.
Rapid Hardening GFRC Mix Design.
Use a concrete mixer to mix the ingredients after you have acquired their appropriate proportion. This product can also be used to produce precast wall caps mantel or lintels for many different applications. Super-Six Ultra High Performance Mix Design. Then when the cement goes in it can combine properly with all the other ingredients to make high quality concrete.