I'm replastering my gunite pool using white cement, silica sand, calcium chloride, and different colored pigments. I'll briefly explain my can of worms. Using one inch tiles strips as borders in a 45 degree stepped pattern, I am trying to replicate the traveretine tile pattern around the pool, hence the different colors. I have read mixing anywhere from 1:1,1:2,1:3 cement/sand respectfully. Ive also read to use 2-3 percent of calcium cloride, but it was unclear if that meant percentage to cement weight or weight of batch? The only answer I havent been able to find is the grit of the silica to use? Multi-grit 30,60,90? I know some colors are not mixible using calcium chloride so i'm sticking to pigments that can be. I used to be a plasterer and have done a fair amount of smoothcoat,so I have enough mechanical skills to fool myself to attempt this. I live in Phx. if the temperature changes the above mentioned. Your help on this would be greatly appreciated.