Anti-Washout/Rheology Modifying Admixture

EUCON AWA-P20 is a ready to use liquid admixture designed to modify the rheology of self consolidating concrete and prevents the loss of cement and fine aggregate during the placement of underwater concrete. EUCON AWA-P20 also can be used to reduce excessive bleeding and segregation of concrete or mortar. The Euclid Chemical Company recommends the use of EUCON AWA-P20 with the PLASTOL line of polycarboxylate based admixtures. EUCON AWA-P20 contains no added chlorides or chemicals known to promote the corrosion of steel. 

Features & Benefits

  • Reduces or eliminates bleeding and segregation
  • Provides thixotropic properties
  • Evenly disperses aggregates within mix
  • Reduces segregation during pumping
  • Minimizes environmental impact by reducing cement washout
  • Eliminates the need for expensive de-watering during underwater construction


  • Self Consolidating Concrete
  • Underwater bridge repair
  • Dam repair below the waterline
  • Underwater grouting and mortar applications
  • Damming underground rivers/lakes in mining operations
  • Anti-segregation aid for use with lightweight and heavyweight aggregates
  • Concrete designs using gap-graded aggregates

Specifications / Compliances

  • Meets ASTM C 494 Type S Admixture
  • Meets requirements of US Army Corps of Engineers CRD-C661, Specification for Anti-washout Admixtures for Concrete


EUCON AWA-P20 is packaged in 275 gal (1041 L) totes, 55 gal (208 L) drums and 5 gal (18.9 L) pails.