These are tests to perform on the ¼ scale experiment. All but the first can also apply to the full scale module. Need to find another way to measure weight, density.
Measure displacement (via waterline) to yield density, weight.
Test separately poured samples to destruction for compression, shear, tensile strength.
Run samples thru multiple freeze/thaw cycles and check for erosion, weakening.
Run strength tests several times over 30 day cure period.
Measure water permeability of outer skin.
Measure dimensions and angles compared to design.
Long-term monitor for cracking, seepage, disintigration.