RB 6.24 Block Plast

Rockbond Block Plast (RB 6.24) is a liquid admixture that is a blend of special powders mixed in a solution to form a plasticiser to improve the workability in masonry blocks and pavers. RB 6.24 also acts as a mix stabilizer and improves dispersion of the cement, enhancing compaction and improving moldability. The products clear properties ensure that discolouring of finished product does not occur.

Special Properties:

  • Decreases the permeability of the finished product.
  • Ready to use.
  • Improves moldability & finish.
  • Improves mix stability.
  • Produces products with more consistent strengths.
  • Helps reduce the water content and reduces shrinkage.
  • Can also be used in Fibre-reinforced plaster.


  • In the manufacture of masonry blocks and pavers.
  • In other low slump mixes to aid dispersion of cement particles.
  • To improve the appearance of the masonry product.
  • To improve the density of masonry units.
  • To increase strength at all ages.
  • Also used as a plasticiser in mortar and plaster mixes