The problem I'm having is how do you come up with the recipe? The litebuilt people create these blocks in two types. One is a density of 600 kg/m3, generally used for insulating purposes or interior walls that aren't load bearing. Then the other is a density of 1100 kg/m3, used for outer walls and load bearing walls. When looking into the recipe described by DomeGaia I finally found that the process of 94# of cement + 7 gallons of water + 36 gallons of foam equates to a foam that is about 300 kg/m3?
I didn't find the right solution from the Internet.