Reflective cracking is the phenomenon where cracks in an existing concrete pavement propagate through an asphalt overlay. Several techniques are used to minimize this. Crack and seat/break and seat involves fracturing the concrete pavement into smaller pieces before overlaying it with asphalt. This reduces the crack width and stress concentration at the joints, delaying reflective cracking. A stress-absorbing membrane interlayer (SAMI) is a layer of asphalt emulsion or modified asphalt placed between t....
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