Please login with your username and password.


Can’t remember your accounts password?

Can't access your account?

Select your language.

This page is available in the following languages:

    Please select your location

    ​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)​

    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 Master Builders Solutions construction product.

    LEED v4 & v4.1 Teaser Image

    LEED v4 & v4.1

    Search by product or CSI code and download up to date LEED information.

    Related Literature

    Certification Letter

    pdf (89.66 Kb)

    Data Guide

    pdf (166.07 Kb)

    MasterFlow 816 CABLE GROUT SDS

    pdf (302.36 Kb)

    MasterFlow 816 CABLE GROUT SDS

    pdf (242.85 Kb)

    MasterFlow 816 SDS

    pdf (490.79 Kb)

    MasterFlow 816 SDS

    pdf (301.92 Kb)

    MasterFlow 816 SDS

    pdf (242.46 Kb)

    MasterFlow 816 SDS

    pdf (374.74 Kb)