Sika® Stabilizer UW 404
(former MasterMatrix® UW 404)
Anti-Washout Admixture
Sika® Stabilizer UW 404 anti-washout admixture is a ready to use, liquid admixture specially developed for concrete placed underwater.
Concrete treated with Sika® Stabilizer UW 404 exhibits superior resistance to washout of cement and fines.
Suitable for use in hot and tropical climatic conditions.
Sika® Stabilizer UW 404 produces a concrete mixture highly resistant to washout, while maintaining workability, pumpability, and placeability. The following special qualities are also provided:
- Reduces concrete bleeding
- Thixotropic action provides stiffening after concrete is placed
- Minimises environmental impact of cement washout in water
- Sika® Stabilizer UW 404 reduces or eliminates the need to dewater underwate constuction sites before concrete construction can take place
- Concrete can be placed by pump or tremie directly into areas covered by water
- Sika® Stabilizer UW 404 maintains the concrete matrix integrity during high slump placements and reduces washout from the surface during curing
- Reduce or eliminate dewatering costs associated with underwater construction
- Concrete is easy to pump and flows readily into available spaces