PVC water stopper is a virgin PVC product designed for use in concrete construction joints where hydrostatic pressure is exerted on one side of the junction. Using Millat PVC Water Stops as a barrier within the joint, it prevents any liquid from passing through or across the joint. The joints can open, close, or be misaligned as a result of lateral and transverse movements.
Uses of Water Stopper PVC
When installed correctly, Water Stop is meant to stop the flow of liquids through or across the joints in a concrete building. It is necessary to use Water Stop on a wide range of construction projects including pools, tanks, parking lots, bridge abutments and abutment plates, retaining walls and foundations, as well as sewage treatment plants and water treatment facilities. It is also required on any concrete buildings needing tight joint connections. You can follow this guide for appropriate PVC water stopper installation.
PVC Water Stop Installation Guide
For ecologically engineered concrete constructions, PVC waterstop is utilized as a fluid-tight diaphragm implanted in concrete across and along the seam. PVC waterstops can stand up to a wide range of chemicals used to treat water and wastewater, and they are certified to meet or exceed the performance requirements.
Put PVC water stopper in all the cracks in the concrete. The waterstop should be in the middle and go all the way across the joint. All direction changes should be made ahead of time, and only butt-welding should be done on the field. If you are installing in an expansion joint, leave the center bulb out so it can move as it was meant to. To keep the water stop from moving around while the concrete is being poured, you can use optional brass eyelets and tie wire.
Water Stop Installation
Liquid leakage is most likely to occur at concrete joints where two or three sections of concrete meet. In order to address these concerns, a variety of waterstop products exist. The performance of waterstops in water-proofing and reducing concrete spalls and cracks is determined by their proper installation. To make it easier for our clients, the Millat PVC Water Stops are provided following waterstop installation instructions:
Preparation
Uncoil waterstops (particularly those with form memories) before installation to allow them to restore their straight shape. It makes the waterstop easier to handle and build. Make that the waterstop is free of flaws or cracks. Replace the waterstops that are damaged and unsatisfactory.
Installation
- Place waterstops in the correct place. Half of its width should be immersed in the concrete.
- Maintain a clear covering of approximately 1.5 times between the waterstop and the surrounding reinforcing steel without the presence of rock pockets or air gaps.
- Reinforcement steels can be tied to the waterstop using steel wire threaded through metal eyelets, punched holes, or heated rings of waterstops. In the meantime, ensure that there is no movement in the fastening process.
- For better interaction with waterstops, pour concrete and shake it close to the seams.
- After the initial pour, sweep the concrete surface to remove any debris or dirt.
- For a second pour, repeat the above steps.
Useful Instructions for Installing Water Stops
- All PVC Waterstop intersections and joins must be welded together on site before installation. In some cases, the water stops may need to be welded together after they have been put in place or after the concrete has been poured because the PVC waterstop could not be finished before the concrete was poured due to problems with placement, etc.
- PVC Waterstop should be put inside the joint so that each concrete pour embeds half of the width of the water stop.
- PVC Waterstops are held in place by concrete nails that are hammered through the specially designed outer flange areas of the water stop and into the lean concrete base (blinding layer) for slab on ground applications or by nails or screws into the formwork for wall applications. If the water stop is in a vertical position, the formwork is then butted up against it. It also aids in the placement of the water stop.
- Carefully arrange the concrete so that the PVC Waterstop does not move from its location in order to complete the installation procedure. Vibrate the concrete surrounding the water stop thoroughly to prevent air entrapment and to ensure that the water stop has positive contact with the concrete. When installing internal water stops for slab-on-ground applications, extra care should be taken to make sure the concrete is fully vibrated and packed around and under the water stop and all of its ribs.