MasterRoc MG 04

High Strength Flowable Grout for Long Strand Cables and Strata Binding

How Does MasterRoc MG 04 Work?

MasterRoc MG 04 is a high early strength, thixotropic grout for placement of cable and rock bolts in underground mine and civil tunnel applications. MasterRoc MG04 is high yield and shrinkage compensated with an extended working time.

MasterRoc MG 04 is designed for use in the post-grouting of roof bolts and cable anchors where the “top-down” grouting method is preferred.

What Are the Benefits of MasterRoc MG 04?

• Fast Strength Development – Achieves 35 MPa within 4 hours, allowing early re-entry for critical path installations.

• Extended Working Time – Offers 60 minutes of working time at 32°C, simplifying pump and hose clean-up.

• Excellent Pumpability with Rapid Thixotropy – Easily pumped but quickly thickens in place to prevent flow into surrounding strata.

• No Collar Sealing Required – Eliminates the need for sealing with cotton waste or similar materials.

• High Ultimate Strength – Provides long-term structural performance and safety for critical applications.

• Shrinkage Compensation – Enhances bond strength to surrounding rock or strata.

• Strong Bond to Steel – Ensures adhesion to reinforcement for secure and durable installations.