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Ruinuo (Bevedol S) — Polymer Grout for Loose/Fractured Rock Reinforcement in Underground Construction
product description
This product is a A/B two-component polyurethane modified epoxy resin grouting material. The product has controllable rapid solidification time, excellent penetration and diffusion, high strength consolidation, adaptability to high strength consolidation of surrounding rock in wet and water environment, and application safety.
During field application, the slurry is proportioned at a 1:1 volume ratio and injected into loose or fractured coal-rock masses using a two-component pneumatic grouting pump and grouting mixer. The slurry rapidly reacts to form a high-strength, highly resilient polymer resin consolidation body. This process bonds the originally loose, fractured, and discontinuous surrounding rock into a continuous and intact load-bearing structure, enhancing the self-stabilization of coal-rock masses and restoring their overall structural load-bearing capacity.
This product has obtained the latest national invention patent (patent number: ZL 2018 1 0941683.9 )
Product Features
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High penetration, strong bonding capacity, and rapid strength enhancement
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Low reaction temperature, high flame retardancy rating, halogen-free formulation, and enhanced application safety
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Especially suitable for high-performance consolidation of loose fractured rock in humid or water-rich environments
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High tensile-shear strength and excellent toughness enable adaptation to dynamic pressure changes in surrounding rock
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Adjustable reaction expansion factor (1-5 times) and high strength can be customized according to engineering requirements
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Rapid and simple construction process
Application Scope
- Rapid consolidation of loose and fractured coal-rock masses in coal mining faces
- Advanced reinforcement of large faults, fracture zones, and collapse columns encountered in mining faces
- Rapid stabilization of fractured and loose coal-rock masses in various roadways to enhance the overall stability and load-bearing capacity of roadway surrounding rock
Technical Parameters of Ruinuo Reinforcement Material (Bevedol S)
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Product Characteristics |
Performance Indicators |
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Component A |
Component B |
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Viscosity /mPa·s |
100–300 |
100–300 |
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Flash Point /°C |
>150 |
>150 |
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Curing Time (after mixing) /s |
30–150 (adjustable based on project requirements) |
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Maximum Reaction Temperature /°C |
<120 |
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Expansion Ratio |
1–5 times |
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Reaction Properties |
The material reacts and consolidates in wet or water-bearing fractured surrounding rock, with a maximum expansion ratio not exceeding 5 times to prevent strength loss due to over-expansion. |
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Compressive Strength /MPa |
60–90 |
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Compression Deformation /% |
5–30 |
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Tensile Strength /MPa |
≥20 |
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Shear Strength /MPa |
≥20 |
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Bonding Strength /MPa |
≥4 |
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Flame Retardancy |
Complies with MT113-1995 technical standards for polymer products used in coal mines |
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Toxicity & Smoke Hazard Classification at High Temperatures |
Class ZA1 |
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Storage and Packaging
- The product is packaged in 25L plastic barrel or iron barrel, and the packaging is not recycled.
- The product should be stored in a dry, cool and ventilated place. Sun exposure and direct rain are strictly prohibited. The suitable storage temperature range is 5-35℃.
- The shelf life of the product is 6~12 months.
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