Hi Pod - you've got a good point. As you can see, many of the posted items have "via" links to tell you where I get them. Others that don't are usually the ones I find by surfing the Net - although sometimes I just forgot to write them where I get them from. For those ones, I apologize.
Gunite and shotcrete, the two other spray concrete applications that have been around for a long time, are used with rebar (as far as I know) - Grancrete uses foam panel instead.
Another interesting features its that grancrete adheres to grancrete. Regular concrete doesn't stick to concrete.
Another interesting features its that grancrete adheres to grancrete. Regular concrete doesn't stick to concrete.