Saved a pour by catching a soft spot right before the trowel hit it
Was finishing a 900 sq ft driveway slab out in Fresno last Thursday and felt the mix go soft on one corner about 20 minutes after the last truck left. Grabbed a bag of leftover mix and a hand float and babysat that corner while the rest cured, and it came out clean. Any of you keep a spare bag on site for touch ups like that or do you just roll the dice?