Extended Workability Admixture

PLASTOL AMP-X³ extended workability admixture is formulated using advanced time-release polycarboxylate technology and has been engineered for use in various concrete applications to provide extended workability of conventional, high slump, or Self-Consolidating Concrete with minimal retardation. Plastol AMP-X³ workability enhancing admixture works in partnership with a normal, mid-range, or high-range water reducer, to aid in maintaining a consistent slump or flow over a significantly increased time period. The addition of Plastol AMP-X³ minimizes the need for jobsite slump adjustments or re-tempering while maintaining consistent air contents from batching to placing of concrete. Plastol AMP-X³ enables the concrete producer to have the flexibility to make adjustments for variations in regional raw materials, specific application requirements, and environmental conditions. Plastol AMP-X³ does not contain added chlorides or chemicals known to promote the corrosion of steel.

Features & Benefits

  • Provides extended slump retention without retardation
  • Consistent control of air content
  • Higher early and ultimate strengths
  • Reduces or eliminates job-site addition of HRWR
  • Lowers number of rejected concrete loads
  • Aids in concrete placement and reduces labor cost


  • Ready-Mix Concrete
  • Precast/Pre-Stressed Concrete
  • High Slump Concrete
  • Self-Consolidating Concrete (SCC)
  • Mining and Tunneling Concrete
  • Flatwork and Mass Concrete

Specifications / Compliances

  • Plastol AMP-X³ has been formulated to meet ASTM C494/C494M Type S Standards.


Plastol AMP-X³ is available in bulk, 275 gal (1041L) totes, 55 gal (208 L) drums, and 5 gal (18.9 L) pails.