MasterLife AS 21 - High performance shrinkage reducing agent

How does MasterLife AS 21 work?

MasterLife AS 21 is a ready to use liquid admixture formulated to significantly reduce the drying shrinkage of any concrete.

Recommended uses:

MasterLife AS 21 is recommended for all types of concrete where a reduction in drying shrinkage is required. Examples include:

  • Slab-on-ground concrete
  • Concrete structure subject to marine and/or chemical environments
  • Industrial pavements
  • Pre-stressed elements
  • Tunnel linings
  • Bridge girders
  • Watertight and water retaining structures
  • Concrete pipes
  • Manufactured concrete products

What are the features and benefits of MasterLife AS 21?

MasterLife AS 21 reduces the drying shrinkage of concrete by reducing the capillary tension of the pore water in concrete. Reductions in drying shrinkage of up to 50% have been obtained using MaterLife AS 21.

The benefits derived from the reduction in drying shrinkage include:

  • Dramatic reduction in crack occurence caused by drying shrinkage
  • Increased joint spacing in concrete pavements and slab-on-ground
  • Improved concrete durability
  • Longer service life


MasterLife AS21: Technical Data Sheet

pdf (315.12 Kb)