Workability Retaining Admixtures

Various levels of water reduction and workability retention can be achieved by adjusting the dosage rate of Sika ViscoFlow®-2020.    At lower dosage rates Sika ViscoFlow®-2020 provides mild to moderate water reduction with some extended workability. At higher dosage rates, or when used in combination with other water reducing admixtures, Sika ViscoFlow®-2020 provides high range water reduction with greater workability retention and the superplasticizing action allows for the production of high slump/flow concrete that can typically be placed with minimal vibration even at an extremely low water/cementitious ratio.   Concrete produced with Sika ViscoFlow®-2020 typically maintains consistency and workability for longer periods. The combined water reducing and superplasticizing action of Sika ViscoFlow®-2020 provides the following benefits:    ▪ Reduced water cement ratios produce more durable, dense concrete, ▪ Reduced concrete stickiness results in lower pumping pressures, ▪ Consistent and predictable slump life performance, ▪ Minimal effect on setting times at lower dosage rates, ▪ Increased slump and workability improves efficiency of labor and reduces labor costs, ▪ Minimizes or eliminates the need for concrete retempering,
▪ Improved finishing characteristics, ▪ Increased strengths allow faster structural use of concrete,      Sika ViscoFlow®-2020 does not contain intentionally added chlorides.