Additional information
| Viscosity at 25 °C A | 250 ± 50 MPa s |
|---|---|
| Viscosity at 25 °C B | 200 ± 50 MPa s |
| foaming | up to 3× |
| Product Name | Bevedol – Bevedan R VF is a fast-curing, two-component injection resin, free from CFCs and halogens. |
| Applications | ► Sealing and stabilization of water-bearing zones, typically where water temperatures are below 15°C ► Suitable for cracks wider than 0.25 mm ► Stabilization of water-saturated and water-bearing rock formations ► Reinforcement of roof strata in mining production and development workings ► Grouting of rock masses to reduce gas permeability ► Rehabilitation of water-bearing underground structures ► Waterproofing to prevent water ingress, including water under high pressure in dams, parking structures, metro tunnels, collectors, and basements ► Waterproofing of mine workings exposed to significant water inflow ► Waterproofing of vertical shafts and tunnels ► Stabilization of unstable and fractured rock formations under water-bearing conditions ► Rock anchoring combined with reinforcement of the surrounding rock mass |
| Component Description | Bevedol P VF – A blend of polyester polyols and additives. Bevedan P – A modified polyisocyanate based on diphenylmethane diisocyanate (MDI). |
| Key Advantages | ► Upon contact with water, the resin components react to form an elastic foam, effectively stopping even significant water ingress. ► Excellent adhesion to all types of surfaces. |
| Operating Principle | Bevedol P VFA – Bevedan P polyurethane resin consists of two liquid components that are supplied separately through hoses in a 1:1 volume ratio using a pump. The components are mixed in a mixer and injected through packers, anchor systems, or sealing devices into the structure under a pressure of 60–90 bar. Upon contact with water, the polymer mixture undergoes a foaming reaction with a significant increase in volume. The expanding foam is forced into cracks by the continuous pressure of newly injected resin. In areas without water, the resin cures without foaming and forms a dense, non-porous material. As a result, a waterproof barrier is created. Recommended application temperature range: +5°C to +35°C. |
| Packaging | Bevedol P VF – Component A: 30 kg plastic canister. Bevedan P – Component B: 35 kg plastic canister. |
| Storage | Shelf life: At least 12 months from the date of manufacture when stored in a dry place at temperatures between +5°C and +30°C. The materials may be transported at temperatures as low as -40°C, provided they are subsequently stored under warm conditions before use. |
| Recommendations | ► The reaction can be accelerated by adding the accelerator CarboAdd Fast. ► The resin components must be conditioned for at least 24 hours before use at a temperature of no less than +15°C. ► Localized overheating of the canister walls must be avoided. |
| Equipment | Compact two-component pumps such as SK90 1:1, CT DP-35, CT DP-40, and MRN, designed to deliver components in a 1:1 volumetric ratio, with pneumatic or hydraulic drive (as well as two-component pumps with manual, pneumatic, or electric drive). Injection accessories include: packers/sealing packers, injection and discharge hoses, shut-off valves, nipples, coupling fittings, and clamps. |
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