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Results from experimental and analytical investigation on the setting stress of recycled-PET polymer concrete are presented. Setting shrinkage test on polymer concrete was, carried out and the fractal dimension of the crack patterns detected on microsco pe images was measured. Numerical simulations of the tests were performed by means of a lattice model and non integer dimensions were measured on the predicted lattice damage patterns. The setting shrinkage cracks that are obtained with lattice are is good agreement with the experimental results.
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