SikaTard®-440 is a new hydration controlling admixture to control the hydration of cement. The use of SikaTard®-440 allows the concrete producer to stabilize concrete mixes for long periods without negatively affecting concrete durability.
- Increases workable life of concrete up to several hours
- Allows controlled delay in set time
- Provides flexibility in planning and scheduling concrete pours
- The effect of SikaTard®-440 in concrete can be negated by addition of appropriate accelerators, at any time