My husband and I have a design for outdoor seating we would like to create that is organic (curvy) in shape and surfaced in mosaic designs. Think of a dragon undulating in and out of the water, the part that appears above the water's surface would be something like what we want to create.
I have experience using chicken wire as an armature under plaster and I know this degrades with use - the bendy nature of the armature causes the plaster to break. I don't have experience with concrete but I suspect it would be likely to degrade in the same way. Is there a way to improve the plasticity of concrete? Is there a particularly good way to create an organic form, or should the seating be solid concrete?
Is fiberglass a better choice?