Collapsing forms remedy- warm water
I wanted to share something We discovered regarding some collapsing forms at the Port Townshend Washington workshop. We found that in cold weather it helps to use warm water in your cement mixes. Warm water helps the cement set up faster keeping the foam intact and the aircrete from collapsing. Also, if you are having collapsing forms even in warm weather, try changing your dish soap. 7th Generation is not always the most reliable it seems. It is a plant based soap which is great for the environment, but at times not great for making aircrete brownies!
Thank you for the super info Ignacio