collinsj
Structural
- Sep 4, 2001
- 2
Has anyone had cracking (shrinkage) problems when placing new concrete containing Anti-Hydro brand waterproofing admixture. The manufacturer advertises that the admix should actually reduce shrinkage cracking, but we had the opposite experience. Vertical cracks formed at approximately 4 to 5 feet on center in a wall that was roughly 18 feet high, and 2 feet thick. The concrete was cured under a water spray. Control joints (with water stops) were spaced at 20 feet on center. This project was a tank for a water treatment facility. A section of the tank wall placed later without the admixture had not such cracking.
