Percentage of Cal is Best for a Strong Concrete Mix for Cantara Stone Wall and Other Building Projec

It seems that there are as many different formulas for a strong concrete mixture as there are different moles in Mexico! What mix of cement, sand, gravel and "Cal" would you use to build your wall and why? I am not used to using any "Cal" in concrete mixtures . . . at least by that name. I am sure it has a specific use here in Mexico for a specific reason and I seek a little education in this subject.

Also, it appears that many folks here use a concrete mix for setting ceramic tile floors in their homes and evidently there are certain tiles that are made specifically to be used with concrete and others that are not. How does one tell the difference and what are the ramifications, pluses or minuses for using concrete as a base for setting a ceramic floor in general living spaces outside of the bathrooms?

thanks,

robt65

(This post was edited by robt65 on Nov 16, 2011, 7:41 PM)

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Post edited by robt65 (Veteran) on Nov 16, 2011, 7:41 PM
Post edited by robt65 (Veteran) on Nov 16, 2011, 7:41 PM