PREPRUFE® CJ Tape is a specially formulated, double-sided, reinforced, pressure-sensitive tape. The bottom side of the tape has a highly aggressive, pressure-sensitive adhesive which is designed to adhere to penetrations, protrusions, PREPRUFE® and BITUTHENE® membranes. The top side has another layer of adhesive and a protective coating.
PREPRUFE® CJ Tape is a specially formulated, double-sided, reinforced, pressure-sensitive tape. The bottom side of the tape has a highly aggressive, pressure-sensitive adhesive which is designed to adhere to penetrations, protrusions, PREPRUFE® and BITUTHENE® membranes. The top side has another layer of adhesive and a protective coating.
A thin, flexible film is sandwiched between the two layers of pressure-sensitive adhesive. The tape develops a continuous mechanical bond with the concrete that is cast against it.
PREPRUFE® CJ Tape is supplied in rolls and is interwound with a silicone coated release liner.
PREPRUFE® CJ Tape is used at construction joints in concrete that is cast against it. It is also used to patch damaged areas in the PREPRUFE® membranes or in critical areas where a wider tape is required.
The tape is a critical component of the PREPRUFE® system since it is designed to develop a continuous mechanical bond to concrete that is cast against it.
| PREPRUFE CJ Tape LT* or HC* | |
|---|---|
| Thickness (nominal)* | 0.7mm |
| Roll Size | 200mm x 15.0m |
| Roll Weight | 4kg |
| Minimum Edge / End Laps | 75mm |
*LT denotes ambient temperature between –4ºC and +30ºC
*HC denotes application temperature between +10ºC and +40ºC
*Nominal thickness refers to the thickness of the tape without release liner.
Apply PREPRUFE® CJ Tape when ambient temperatures are -4 ºC or above. Select correct LT or HT grade for the application temperature experienced. Wipe PREPRUFE® membranes clean to remove any dirt, dust or moisture. Clean the surface of penetrations or protrusions with a wire brush to remove dirt, dust, rust and loose particles.
Unroll the tape and adhere the exposed pressure-sensitive adhesive surface to the membrane or penetration. The protective coating surface of the tape should face toward the concrete to be cast.
Use heavy hand pressure or a hand roller to maximise adhesion. Remove the release liner during application. Cast concrete or apply shotcrete within 30 days of application of the tape.
