How can you fix overworked concrete?

How can you fix overworked concrete?

• A. Add More Aggregate And Vibrate
• B. Tear Out And Repour
• C. Patching Or Overlaying
• D. Cover To Slow Curing Rate

Answer: (C)

Overworking concrete creates a weak, dusting surface because finishing too long or with too much vibration drives cement paste and fines to the top. The best fix is patching or overlaying the area: patching fills localized flaws, while overlaying provides a new surface that bonds to the existing concrete and restores a uniform, durable finish. This approach corrects the surface damage without the greater disruption and cost of tearing out and repouring. Adding more aggregate and continuing to vibrate won’t fix the laitance problem and can worsen the surface by pushing more fines to the top. Merely covering to slow the curing rate doesn’t repair the already-set surface.

Overworking concrete creates a weak, dusting surface because finishing too long or with too much vibration drives cement paste and fines to the top. The best fix is patching or overlaying the area: patching fills localized flaws, while overlaying provides a new surface that bonds to the existing concrete and restores a uniform, durable finish. This approach corrects the surface damage without the greater disruption and cost of tearing out and repouring. Adding more aggregate and continuing to vibrate won’t fix the laitance problem and can worsen the surface by pushing more fines to the top. Merely covering to slow the curing rate doesn’t repair the already-set surface.