d="p0005">Both approaches have potential to be applied in real-scale concrete structures.
dd><dt class="label">•dt><dd>d="pc-p1">Use of encapsulated PU requires more preparation compared to the addition of SAPs.
dd><dt class="label">•dt><dd>d="pc-p2">One approach is triggered through crack appearance the other by water ingress.
dd><dt class="label">•dt><dd>d="p0020">SAPs resulted in the highest healing efficiency based on crack width measurements.
dd><dt class="label">•dt><dd>d="p0025">Release of PU from the capsules and crack closure was clearly noticed from CT.
dd>dl>