Mungo 1690017 (MIT-BS-HO Series)

Professional Summary

• Manufacturer: Mungo (Switzerland)

• Model/Article: 1690017 (MIT-BS-HO Series)

• Type: Large Steel Wire Blow-Out Brush for Drill Hole Cleaning

• Quantity: 1 piece

Technical Specifications

• Compatible Drill Hole Diameters ($d_0$): Specifically sized for heavy-duty 24 mm and 26 mm drill holes.

• Total Brush Length ($L$): 300 mm (calibrated for deep-hole industrial structural anchoring).

• Material: Premium high-tensile braided steel wire bristles twisted tightly around a reinforced rigid steel core rod, completed with a manual handling tail.

Key Benefits & Technical Significance

• Critical for Structural Anchor Integrity: Large-diameter anchoring jobs carry immense structural and seismic loads. Residual dust creates a dividing layer that ruins resin adhesion; using this heavy steel brush ensures the chemical mortar targets raw, solid parent concrete.

• Aggressive Mechanical Keying: The ultra-stiff steel bristles effectively scrape, clean, and roughen the concrete borehole walls, directly increasing the mechanical undercut and peak tensile/shear resistance of the cured injection system.

• Heavy-Duty Industrial Life: Constructed to resist severe abrasion from jagged aggregate within high-strength concrete matrices, ensuring the brush keeps its nominal outer cleaning diameter throughout multiple cycles.

Application:

Specified on heavy commercial construction, civil infrastructure, and structural framing projects to clean $\varnothing 24\text{ mm}$ and $\varnothing 26\text{ mm}$ boreholes in solid concrete or natural stone. Used prior to injecting Mungo MIT chemical resins for embedding heavy M20/M22 threaded studs or post-installed structural reinforcement steel bars (rebar).