CarboStop U is a one-component, water-reactive resin that foams and cures
upon contact with water. It is free from fluorochlorohydrocarbons (FCHCs)
and phthalate plasticizers.

Applications

► Stopping water ingress (including seawater)
► Stabilization of loose soils
► Waterproofing during tunnel excavation and construction
► Sealing boreholes and gas drainage wells

Component Description

CarboStop R U is a resin composed of modified isocyanates and additives.

Key Advantages

► High expansion factor compared to two-component resins; CarboStop R U
cures only upon contact with water.
► Excellent adhesion properties to all types of surfaces.

Operating Principle

CarboStop U is injected into water-bearing zones through a packer
(injector) using a manual pump or an electric/pneumatic pump. Upon contact
with water, the resin expands significantly and cures. If there is
insufficient water in the area being sealed, pre-injection or
post-injection of water is required to ensure complete curing of the
material.

Packaging

CarboStop U – 10 kg plastic canister. Alternative packaging sizes may be
available upon agreement with the customer.

Storage

CarboStop U should be stored at temperatures between -5°C and +30°C. When
stored under these conditions, the shelf life is at least 12 months.

Recommendations

Before use, CarboStop U resin must be conditioned for at least 24 hours at
a temperature of no less than +15°C to achieve the optimal application
temperature range of +15°C to +30°C. Localized overheating of the
canister walls must be avoided.

Equipment

Compact single-component or two-component injection pumps with manual,
pneumatic, or electric drive, along with injection accessories such as
packers/sealing packers, injection and discharge hoses, shut-off valves,
nipples, coupling fittings, and clamps.