Modulus of Rupture & Civil Engineering Question

Building a 5 story building about 80 foot maximum height of walls at gables top but most top out 3 story at 48 feet . Need to know what the M/R is for type C Fly Ash for load bearing applications when used in a design admixture: including evenly graded sand. I need to know at what proper inch thickness and at what width thicknesses should be for sufficient strength to load bear the building from foundation up. Have had some success with small test samples & blocks using a 3 part fly ash 7 part sand and almost no water other than the wet sand , then hand packing the test into a 2" square cube or larger mold. We will also want to add a piece of 3" foam insulation to the outer & cap it with additional design admix . For Example in a 12 inch wall thickness : Admix =2 inches outside , then 3 inches of foam ,then 7 inches of admix interior all poured together at one time, with some pencil rebar to hold the 2 pours to the foam. I Would Appreciate Any Help . Thanks Joe Woodall , Estate@woodallestate.com