Be sure that a crack stop or crack suppression product is included in your flooring project. This is a thin (1/32 inch) material, looks a lot like tar paper, it get glued to the concrete, and then the thin set is applied for the tile. When a crack develops in the concrete, it will not (should not) cause the tile above to crack.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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