Bridge Bearing Grouting Material ensures reliable load transfer under bridge bearings with high early strength, flowability and long-term durability.
Summary Benefits at a Glance
High Strength – Compressive strength ≥ 60 MPa at 28 days
Excellent Flowability – Easy to fill under narrow gaps and reinforcement
Non-Shrink Expansion – Controlled volume change, stable support
Durability – Impermeability, freeze-thaw and chemical resistance
Product Introduction
Bridge Bearing Grouting Material is designed for precision grouting beneath bridge bearings and structural components. It comes in cement-based types (Early Strength I, Early Strength II, Normal) and epoxy resin-based types. Cement-based grout provides rapid strength gain, excellent flowability and non-shrink performance, while epoxy resin-based grout offers superior bonding, chemical resistance and durability for demanding conditions. The material ensures reliable transfer of loads, prevents voids, and extends the service life of bridge structures.
Product Parameters
Cement-Based Grouting Material
| Property | Early Strength I | Early Strength II | Normal |
|---|---|---|---|
| Flowability (mm, initial/30min) | ≥ 320 / ≥ 280 | ≥ 320 / ≥ 280 | ≥ 320 / ≥ 290 |
| Setting time (min) Initial/Final | ≥ 30 / ≤ 180 | ≥ 30 / ≤ 180 | ≥ 60 / ≤ 720 |
| Bleeding rate (%) | 0 | 0 | 0 |
| Compressive strength (MPa) 2h | ≥ 20 | ≥ 20 | — |
| 24h | ≥ 50 | ≥ 40 | ≥ 20 |
| 28d | ≥ 60 | ≥ 60 | ≥ 60 |
| Flexural strength (MPa) 28d | ≥ 10 | ≥ 10 | ≥ 6 |
| Elastic modulus (GPa, 28d) | ≥ 30 | ≥ 30 | ≥ 30 |
| Expansion rate (3h) | 0.1–2.0 | 0.1–2.0 | — |
Epoxy Resin-Based Grouting Material
| Property | Performance |
|---|---|
| Flowability (mm, initial/30min) | ≥ 230 / ≥ 200 |
| Setting time (min) | ≥ 60 |
| Compressive strength (MPa, 28d) | ≥ 90 |
| Flexural strength (MPa, 28d) | ≥ 25 |
| Elastic modulus (GPa, 7d) | ≥ 15 |
| Bond strength (MPa, 28d) | ≥ 3.5 |
| Linear shrinkage (%) 48h | ≤ 0.05 |
| Effective bearing capacity (%) | ≤ 85 |
Product Usage
Bridge Bearings: Precision grouting under bearing plates to ensure full contact and load transfer.
Structural Grouting: Anchor zones, column bases, and heavy equipment foundations.
Repair Applications: Reinforcement and repair of deteriorated or voided bearing grout layers.
Epoxy Grouting: Ideal for chemical, marine, and heavy-duty structures requiring superior bonding and durability.
Application Notes:
Mix and place within 30 minutes for cement-based grout.
Ensure thorough vibration for compaction and impermeability.
Cure promptly; maintain moisture for ≥ 7 days.
Substrate must be cleaned and roughened before grouting.
Epoxy grout requires strict proportioning (A:B:C = 30:10:160).
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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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