MasterFlow 816: Aggregate-free cable and duct grout

How does MasterFlow 816 work?

Masterflow 816 cable grout is a cement-based aggregate-free grout. It produces a fluid, pumpable, non-shrink, non-bleeding, high-strength product with extended working time. It provides corrosion protection for highly stressed steel cables, anchorages, and rods.

Recommended uses:

  • Pumping around pre-tensioned or post-tensioned cables and rods
  • Placing around end sections of unanchored cables and rods
  • Non-shrink grouting in restricted spaces between precast wall panels, beams, and columns
  • Grouting cable anchor plates where grout contacts highly stressed anchorages
  • Conventional grouting applications with clearances over 1/4" (6 mm) but under 1" (25 mm)
  • Vacuum grouting for repair of voids in previously grouted post-tensioned tendons
  • Inclined and horizontal post-tensioned tendons

What are the unique features of MasterFlow 816?

  • Pumpable
  • Non-shrink / hardens without bleeding or resultant voids
  • Protects tendons from corrosion
  • Can achieve 20–30 second flow per ASTM C 939
  • Flow Cone Method
  • Suitable for conventional grouting where clearances are between 1/4 to 1" (6–25mm)

What are the benefits of MasterFlow 816?

  • Free of fine aggregate for maximum penetration into small spaces, between wire strands
  • Long working time and recirculation possible at temperatures up to 90° F (32° C)

US / Canada Product Information

Data Guide

Data Guide (French)

Certification Letter

LEED Letter

Direct contact

Master Builders Solutions Technical Support

Construction 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

Certification Letter

pdf (76.35 Kb)

Data Guide

pdf (268.52 Kb)

LEED Letter

pdf (94.26 Kb)