CBGM-380 Precision Grout for Tight Clearances is a high-performance, ultra-fluid, non-shrink cementitious grout specially engineered for filling narrow gaps and confined spaces with precision. It offers excellent flowability, rapid early strength, and zero bleeding—making it ideal for equipment base plates, anchor bolts, precast joints, and structural void filling where tight tolerances are required.
Key Features:
Ultra-Flowing: Designed for narrow or complex geometries with flow cone time ≤35s
Tight Clearance Grouting: Easily penetrates confined areas without segregation or blockage
High Early Strength: ≥15 MPa at 1 day, ≥30 MPa at 3 days, ≥50 MPa at 28 days
Non-Shrink & Expanding: Controlled vertical expansion 0.1–3.5% to ensure full contact and long-term stability
Zero Bleeding: Maintains grout integrity and uniformity
Corrosion Resistance: Chloride ion content <0.1%; safe for use around steel reinforcements
Product Introduction
CBGM-380 is a premium-grade, bleed-resistant precision grout designed for use in tight clearance grouting and high-tolerance structural placements. Its ultra-smooth, pumpable consistency ensures effortless placement into narrow voids and under base plates without segregation or settlement. This cementitious non-shrink grout delivers high early compressive strength while maintaining zero bleed and excellent dimensional stability.
Engineered for demanding industrial and infrastructure projects, CBGM-380 grout for tight clearances meets the needs of contractors and engineers requiring accuracy, efficiency, and long-term performance—especially in complex anchoring, rebar embedding, or machine base installations.
Precision grouting for machinery base plates
Filling narrow voids under structural steel and precast panels
Anchor bolt grouting in dense configurations
Repair and strengthening of concrete in limited access areas
Clean substrate thoroughly; remove oil, dust, loose materials.
Saturate substrate surface with clean water (SSD), but no standing water.
Mix using high-shear mixer for 3 minutes until lump-free.
Pour or pump grout into forms continuously; do not vibrate.
Protect exposed surfaces and cure per standard guidelines.
Product Parameters
| Test item | 380 |
| Water-cement ratio (%) | 0.26 ~0.28 |
Setting time (h) Initial condensation Final condensation | ≥5 ≤24 |
| Water discharge rate (%) | 0 |
Fluidity (25°C) Initial flow 30min flow 60min flow | 10~17 10~20 10~25 |
| Pressure discharge rate (%) | ≤2.0 |
| Compressive Strength | 1d ≥15 MPa; 3d ≥30 MPa; 28d ≥50 MPa |
| Bleed Rate | 0% |
Packed in composite kraft paper bag, net weight 40kg/bag, A component is:40kg/bag, B component is:40kg/bag.shelf life is 6 months.
It should be stored in dry and ventilated room, with the bag tightly closed, pay attention to moisture-proof and anti-freezing.
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Our products have undergone rigorous testing at our national testing laboratory (CABR testing center co., ltd). Renowned Fortune Global 500 firms such as China Railway Group Limited, China Communications Construction Company Limited, and Sinohydro are among our esteemed clients.
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