Concrete forms.
12.7 square samples, 1.75 inches thick, made so far:
A control made from low slump 4,000psi common concrete.
Low slump sample made using 25% acrylic polymer booster, common 4,000psi concrete.
3 samples made from the same mixing of standard 4,000psi concrete, medium workability.
One sample is a control.
The second sample had stucco supporting mesh cast into the center. As if the mesh were suspended and cast in the middle of the wall.
The third sample I tossed a 12 inch square mesh in the bottom of the form sloped concrete on top of it then set another 12 inch square of mesh on top and pressed it lightly into the concrete, as if a wall were made with stucco mesh lining the form.
In a few days when the day old samples are nice and solid I will drop them out of the forms and make some more. The goal is to start making 1 or 2 sets of test samples per week until lots of different test combinations are sampled.
I have 5,500psi and 6,500psi mixes and polymer booster, steel a concrete vibrator and a vacuum chamber.