MasterCast 825: Plasticizing and water-repellent admixture

Formerly: Rheomix 825

How does MasterCast 825 work?

MasterCast 825 ready-to-use plasticizing and water-repellent admixture is based on a unique, patented chemistry. MasterCast 825 admixture is specially formulated for both cost-efficient and aesthetically pleasing manufacture of concrete blocks, segmental retaining wall units, paving stones, and roofing tiles. When added to such concrete mixtures, cement and pigment dispersion is enhanced and the concrete becomes integrally lubricated by MasterCast 825 admixture. This results in increased compressive and flexural strengths, faster production rates, and improved surface characteristics. By varying the dosage, additional properties such as efflorescence control and reduced absorption are achieved.

Recommended uses:

  • Concrete blocks
  • Paving stones
  • Segmental retaining wall units
  • Concrete roofing tiles

What are the unique features of MasterCast 825?

  • No swipe texture
  • Flexible dosage range
  • Excellent mix flowability and extrusion properties
  • Optimized cement and pigment dispersion
  • New plasticizing, water-repellency, and efflorescence-controlling technology

What are the benefits of MasterCast 825?

  • Increases production rates
  • Increases compressive and flexural strengths
  • Improves visual appeal, color, and texture
  • Reduces absorption rates
  • Reduces efflorescence potential
  • Reduces breakage and culls
  • Reduces efflorescence potential
  • Potential cement and pigment reduction
  • Extends life of mold and other machine parts
  • Significantly improves material flow, compaction, and extrusion characteristics, and maximizes the production rate at which dry-cast concrete products can be fabricated

US / Canada Product Information

Data Sheet

Direct contact

Master Builders Solutions Technical Support

Admixture Systems


Safety Data Sheet (SDS)

Find all available safety data sheets for this product.

Product Certifications

Generate a free certificate of conformance for a specific BASF construction product.

Related Literature

MasterCast 825 Data Sheet

pdf (63.11 Kb)