Products

Bevedol – Bevedan R VF is a fast-curing, two-component injection resin,
free from CFCs and halogens.

Viscosity at 25 °C A

250 ± 50 MPa·s

Viscosity at 25 °C B

200 ± 50 MPa·s

Foaming

up to 3×

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.