Mix FB mortar with regular cement for landing

[mandrews0809]

Getting ready to get my landing in place, and I planned to precast it with cement, polish it and then set it in place. I have a 50lb bag of fb high temp mortar and I was thinking of adding some of it to my cement mix to give it a little thermal protection on the landing.

I was thinking of 5o% fb mortar, 50% Rapid Set Mortar Mix, black liquid cement dye.

Landing isn't terribly big

Thanks