RHEOMAC UW450 

RHEOMAC UW450 anti-washout admixture is a ready to use, liquid admixture specially developed for concrete placed underwater.  Concrete treated with Rheomac UW450 admixture exhibits superior resistance to washout of cement and fines.

RHEOMAC UW450 admixture is recommended for use in all types of concrete pumped or tremied underwater.  RHEOMAC UW450 admixture is especially helpful in extreme conditions where conventional concrete or placing techniques would result in a high percentage of material loss due to washout.

RHEOMAC UW450 admixture is particularly useful in mortar and grouting applications where mixtures are typically more fluid and have a higher potential for washout.

RHEOMAC UW450 admixture should be used with a water-reducing admixture, such as BASF’s POZZOLITH products.  For achieving high slump concrete, use RHEOMAC UW450 admixture in conjunction with POLYHEED 997 admixture or melamine based superplasticiser such as RHEOBUILD 2000B.  This combination will produce a high performance, high strength, low water-cementitious ratio, flowing concrete that exhibits superior resistance to washout of cement and fines.

Do not use RHEOMAC UW450 admixture with napthalene-based admixtures.  Erratic behaviour in slump, pumpability, and washout may be experienced.