Viscosity Modifier Additive-Plastit® AW450

Plastit AW450 anti-washout admixture is a patented, readyto- use, liquid cellulose-based admixture that is specially developed for underwater concrete applications. Concrete containing Plastit AW450 admixture exhibits superior resistance to washout of cement and fines, while impeding the blending of external water into the plastic concrete. Plastit AW450 is suitable for concrete with water-cement ratio is lower than 45%

Reduction in washout of cement and fines
 Reduction in segregation, even with highly fluid, high water-to-cementitious materials ratio concrete mixtures
 Thixotropic action that provides concrete stiffening after placement
 Reduction or elimination of concrete bleeding

 All types of underwater concreting where conventional concrete or placing techniques would result in a high percentage of material loss due to washou
Mortar and grouting applications where mixtures are typically more fluid and have a higher potential for washout

The optimum dosage Plastit AW450 to meet specific requirements should always be determined by trials using the materials and conditions that will be experienced in use. The normal dosage range is between 0.7 to 1.5 kg/100 kg of cementitious material

Appearance Light Yellow liquid
Specific gravity gr/cm3 1.01 at 20 °C
 Chloride  Nil to BS5075 
Air entrainment   Typically less than 2% additional air is entrained at normal dosages.

Plastit AW450 is available in 20 kg containers and 200 kg drums
Plastit AW450 has a minimum shelf life of 12 months provided the temperature is kept within the range of 5°C to 35°C. Should the temperature of the product fall outside this range then contact CAPCO for advice