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Plastic Shrinkage Cracking<br />

‣Typically, cracking is shallow<br />

(1/2 to 3 in. deep) & clo<br />

osely<br />

spaced – due to poor curing<br />

‣Obtain i cores over a few<br />

cracks to verify depth<br />

‣Treatment:<br />

• Do nothing<br />

• Inject low viscosity epoxy or<br />

high molecular methacrylate<br />

• Extensive or deeper cracking<br />

slab removal & replacement<br />

68

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