Sika® Waterbars are constructed from flexible thermoplastic PVC. They are designed to stop the migration of water through construction and expansion  joints in concrete structures. Sika® Waterbars are available in various sizes and profiles to suit all types of application. For the effective sealing of concrete construction and expansion joints in structures such as:

Basements

Water reservoirs

Sewage treatment plants

Swimming pools

Retaining walls

Lift shafts

Tunnels, culverts

Service pits

ADVANTAGES

Sealing starts as soon as the concrete has hardened

Multi rib profile provides impenetrable barriers to water migration

Can be easily site welded - (welding knife is available)

Good chemical resistance

Available various kind of profiles for all type of application

PRODUCT DATA

Split Formwork with Sika-Waterbars “O” Profile: Fixing to formwork: The “O” profile Sika-Waterbars may also be used to in conjunction with slipt formwork. However care should be taken to ensure that the “O” ring is not squashed flat betwenn two forms. This mathod of installation increases the capac-ity of the Sika-waterbars to accom-modate expansion.

Formwork with Sika-Waterbars “V” Profile: Fixing to formwork: The “V” profile Sika-waterbars is fit- ted into the slpit formwork or shut-tering for casting centrally into the stopends. It is used for construc-tion joints and movement joints where nominal movement is antici-pated, such as basement or retain-ing walls.

Placing concrete first stage: The Sika Waterbar performs its function only if both sides are well em-bedded in the concrete. Avoid formation of honey combs by vibrating care-fully. The consistency of the concrete itself should be neither too plastic nor too stiff, and the aggregate must be well graded. Placing of fresh concrete near the Sika Waterbar requires care, as other-wise it will be forced from its position by the pressure of the fresh con-crete, i.e. the ends will fold up. To prevent this, the same concrete pres-sure must be present on both sides of the Waterbar.

Placing concrete second stage : Removal of formwork in the neighborhood of Sika-Waterbar must be done with care. The end of the Sika Waterbar should be thoroughly checked for honey-combing on the stop-end and repaired if necessary. It must also be cleaned of all hardened concrete remnants adhering from the first con-crete stage. Further procedure is similar to the first stage.

Limits on application /  notes: Level differences, bends, junctions, etc. should be carefully considered before placing.

HEALTH AND SAFETY

Care should be taken to avoid breathing fumes and smoke during the PVC welding process. Hence, welding should be performed in open, well ventilated area. In case of doubt always follow the directions given on the pack or label