JYOTI HYDRO-STOP

JYOTI HYDRO-STOP is a range of centrally placed and externally placed PVC Waterstops extruded from high grade PVC compound.

JYOTI HYDRO-STOP is designed to provide a complete sealing network for expansion and contraction/construction joints in water retaining and water excluding in-situ concrete structures. The profiles are supplied in straight lengths to be butt jointed on site. Factory made intersections are available for complex junctions.

The use of JYOTI HYDRO-STOP prevents the passage of water through expansion/contraction/construction joints in the following typical structures:

• Canals/culverts
• Water tanks
• Reservoirs
• Dams
• Sewerage Treatment Plants
• Liquid retaining vessels
• All cast in-situ concrete structures to retain or exclude water

PVC Waterstops were originally designed as simple dumbbell profiles which worked on the valve sealing action of the opening joint putting the waterstop in tension, thus sealing the water path. Later designs included multi ribs and fins, in what is known as the tortuous path principal of an extended potential water track created by the ribs and fins.

JYOTI HYDRO-STOP combines all the accepted and proven principals of PVC Waterstop in four valve and tortuous path design, together with reinforced eyeleted fixing flanges on all centrally placed profiles plus grout check fins on all construction/contraction joint profiles.

JYOTI HYDRO-STOP 150/200/250 ICJ/IEJ-FG is an economic construction/contraction joint profile specifically for use in kicker and contraction joints in small structures such as water tanks cast in-situ manholes, channels etc where there are no expansion joints and wall or slab thicknesses do not exceed 200mm. Includes an eyeleted flange.

Available Sizes: 150mm, 200mm, 250mm, 300mm, 330mm

Flange Width: 25mm

Thickness: 6mm

JYOTI HYDRO-STOP PVC Waterstops are designed for use within the performance parameters indicated in the technical specifications.

Centrally Placed Profiles (ICJ & IEJ)

Usually located midway in the slab or wall thickness across the joints in concrete structures. They will equally prevent the passage of water through the joint from either face. They are particularly suited to:

• Water retaining structures
• Walls and slabs where pressure differential may occur
• Reservoir walls
• Suspended slabs
• Vertical wall joints
• Lift joints

Externally Placed Profiles (ECJ & EEJ)

Of particular advantage for their ease of installation in basement and foundation applications in situations where they are firmly supported against back pressure, i.e. in water retaining structures (base slab) where they are placed on the blinding concrete.

Size Selection

The choice of width of profile is mainly governed by:

• Slab/wall thickness
• Position of reinforcing steel
• Aggregate size

As a general rule, the 250mm width profiles are appropriate for slab/wall thickness over 250mm. For concrete members less than 250mm, use a smaller profile approximating to the actual slab or wall thickness.

Centrally Placed Profiles (ICJ & IEJ)

Must be installed so they are securely held in the correct position whilst the concrete is poured. The concrete must be fully and properly compacted around the waterstops. Where reinforcement is present, an adequate clearance must be left between this and all waterstops to permit proper compaction of the concrete.

The brass eyelets in the reinforced flanges allow them to be wired to the surrounding reinforcing steel. The eyelets are an integral part of the profiles and being placed outside the outer valves, cannot create a water path around the profile or impair the efficiency in performance in any way.

Externally Placed Profiles (ECJ & EEJ)

When used on ground slab blinding concrete where a permanent, firm and stable support is given, usually require no fixing. The profile is simply laid centrally over the line of the joint to be formed. Fixing to vertical shuttering is simplified by nailing with double headed nails through the outer reinforced flange.

Water Retaining Structure

1. JYOTI HYDRO-STOP External Expansion Joint
2. JYOTI HYDRO-STOP Internal Construction Joint
3. JYOTI HYDRO-STOP Internal Expansion Joint

Water Excluding Structure

1. JYOTI HYDRO-STOP External Expansion Joint
2. JYOTI HYDRO-STOP External Construction Joint
3. JYOTI HYDRO-STOP Internal Expansion Joint

Heat welding equipment is available to enable site jointing to be carried out efficiently. Jointing jigs ensure that the mating surfaces of the waterstop are accurately aligned while the heater blade heats the waterstop to the necessary temperature for jointing.

Available Jointing Jigs

• 150mm EEJ/ECJ
• 200mm EEJ/ECJ
• 250mm EEJ/ECJ
• 150mm IEJ/ICJ
• 200mm IEJ/ICJ
• 250mm IEJ/ICJ
• 110V / 220 Volt Electric Heater Blades for use with all jigs

Site Jointing Instructions

1. Make sure that the heater blade is clean, plug it into the correct voltage electricity supply and leave in a safe position to warm up.
2. Ensure that the ends of the waterstop to be joined are of the same width and profile, clean them with water and dry them.
3. Clamp them into the correct profile slots of the jig provided and cut both ends off square with a sharp knife, flush with the faces of the jig.
4. Note: An allowance must be made for waste and for the 5 to 10mm that will be taken up by melting when calculating the length of waterstop required.
5. Loosen the jig and slide them back so that approximately 10mm of each waterstop end projects and then clamp the jig tightly in position.
6. Position the heater blade on the bars between the jig and slide them together until the waterstop ends are pressed firmly against the sides of the blade.
7. The PVC should melt without burning or charring. Hold the jig firmly in position until a bead of melted PVC approximately 3mm in diameter appears along either side of the heater blade.
8. Slide the jig apart a little and remove the heater blade with an upward movement.
9. Quickly joint the melted ends by sliding the jig together and exerting pressure, approximately 20 seconds to allow the melted PVC to fuse completely.
10. Switch off the heater blade. While it is still hot, clean with emery paper or a wire brush ready for the next joint.
11. Unclamp the jig and carefully remove the waterstop. Do not flex the joint until it has cooled.

Standard factory-produced welded intersections are available for all JYOTI HYDRO-STOP profiles:

• Flat Mitre
• Flat 3 Way
• Flat 4 Way
• T Piece
• Edge Mitre
• Edge Mitre (Int)
• Edge Mitre (Ext)

Composite Intersections

These are required when a change from horizontal to vertical occurs in the same type of joint:

• Slab expansion to wall expansion joint
• Slab contraction to wall contraction joint
• EEJ to IEJ → T-Piece
• ECJ to ICJ → T-Piece

Note: If a composite edge mitre is needed, simply cut off one of the horizontal legs.

• JYOTI HYDRO-STOP profiles are supplied in 15 Metre rolls.
• Flat intersections are supplied with a leg length of 250mm from centreline.
• Edge intersections are supplied with 100mm legs.

• Hot welding of PVC produces hydrochloric acid fumes, which in confined spaces may exceed the minimum TLV of 5 ppm.
• Therefore, forced ventilation must be provided or a suitable respirator used.
• In open site applications, it is not considered that any health dangers exist.
• Applies to HYDRO-STOP® Centrally and externally placed PVC Waterstops.

• All JYOTI Products are manufactured under a management system independently certified to conform to the requirements of quality, environmental, and occupational health and safety standards.
• Properties listed are only for guidance and are not a guarantee of performance.
• Field service, where provided, does not constitute supervisory responsibility.
• JYOTI reserves the right to have the true cause of any difficulty determined by accepted test methods.