Injection Hose

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Injection Hose System

 

Injection Hose System is the brand name of a state of art, multi-injectable injection hose system, used to seal joints in concrete against water egress. Injection hose is used to transport grouting materials and then disperse them into the concrete joint via micro openings along the injection hose.

Injection hose is a highly resistant, robust, fully tested, single channel injection hose system that is made of specially developed PVC materials. Its expert design and state of art technology is the reason for its high performance, unique processing ability and total functionality.

It has the ability for multi-injectable grouting processes depending upon the grouting material used. This ability allows the system to be re-injectable for the life time of the structure, giving total peace of mind and assurance that the structure can be fully sealed and resealed, if and when required. A great advantage if movement or shrinkage occurs between concrete joint faces of the structure.

 

Advantages

  • A perfect sealing solution
  • Excellent installation features, fast and easy to install
  • Economical handling due to simple, easy connection of accessory pieces
  • Injection hose is supplied on handy spool that allows for uncomplicated cutting to length due to numerical markings printed at every metre along the hose
  • Low consumption of grouting material due to optimum inner hose diameter
  • Maximum safety features as grouting processes are performed under very low pressures
  • Simple grouting process with multi-injectable capabilities
  • Multiple grouting materials can be processed
  • Ultimate grouting processes performed at 10m-12m intervals between injection points. Overlength injections of up to 30 metres can be achieved with special injection processes and use of correct equipment
  • Highly economical through rapid laying times and rapid injection processes

 

Areas of Application

  • All areas where construction joints are present and require sealing against water or require a particular joint sealing process
  • Water excluding and water retaining structures
  • Basements and below ground structures
  • Tunnels and underground vaults
  • Water and sewerage treatment plants
  • Ground and elevated reservoirs and dams
  • Suspended slabs and roof slabs
  • Water tanks and pools

Note : The products design and performance, its intended use, installation and final confirmation and approval for use, must be provided by the project’s Design Engineer and Project Manager.

 

General Information

Unsealed construction joints can decisively lessen the durability and utility-value of concrete structures. Nowadays, injection hose systems are being increasingly used for sealing construction joints in waterproof concrete structures. Their advantages are numerous when compared to traditional waterstop systems. It is not always required to inject the hose but usually only if the joint is leaking, thus making it a very cost effective procedure.

The area of application is usually at the construction joint (other application areas can be applied) where hardened and fresh concrete have to be joined in such a manner that the sealing effect of the construction joint is fulfilled equally.

Simple and rapid installation is achieved at all positions, levels and angles. It can also be laid where the installation of traditional systems is constructively impossible; for example, on geometrical complicated surfaces such as sheet piling, diaphragm and contiguous pile walls and old to new construction.

Reliable sealing of construction joints, cracks in construction joints, and destroyed areas of concrete (gravel pockets and cavities) can be filled. Previously this has not been possible to achieve with conventional waterstop systems.

It is used in all types of construction joints and in particular during the construction of water and sewage treatment plants, dams, barrages, underground garages, in tunnels and the construction of foundations, basements, bridges and power stations.

 

Technical Features

Profile: Circular

Colour: Blue

Outer Diameter: 13mm

Inner Diameter: 6mm

Length Markings: Every 1 metre

 

Micro Opening Dimensions

Length: Approximately 3mm

Spacing of openings: Approximately 10mmm

Location around hose: 4 equal positions

Injection hose is equipped with micro openings (injection ports), equally spaced over its entire circumference, which provides injection hose with optimum grouting characteristics. During the injection process, the microscopic ports open at 1 Bar and injected material is then allowed to perform its task of penetrating the construction joint that requires grouting. As a result, a more secure and longer lasting sealing of the construction joint is achieved.

The micro openings prevent any infiltration of concrete silt and foreign bodies into the injection hose itself. After successful injection, the pressure is released, which causes the micro openings to close. The injection channel can then be flushed out with water and without the threat of any injection material seeping back into the injection hose or water injecting into the joint during the flushing process. The specially designed micro openings are designed in such a way that they act as valves, allowing the release of material out of the hose but not back into it.

 

Injection Materials

  • Acrylic Gel
  • P.U Resin
  • E.P Resin
  • Ultra-Fine Cement

 

System Components

  • Injection hose – 120 metres roll – numerical markings every metre on hose.
  • Plain Reinforced PVC Hose – only required for special applications to channel grouting material.
  • Varioclix D Injection Point – dual injection point (can split into two single injection points).
  • Varioclix BS Injection Point – dual injection point with blue spacer.
  • Hose Clamp – holds hose into position on concrete surface, used in conjunction with impact plug.
  • Impact Plug – securing pin for use with hose clamp.
  • Hose Coupler/Joiner – joins hose or to join plain reinforced PVC hose to hose.
  • Injection pumps, Injection resins & Injection nipples-used to perform the injection process.

 

Installation Procedures

  1. Installation of injection hose is preferably positioned in the middle of the substrate or if not possible, with a minimum of 100mm concrete cover from any outside edge.
  2. Injection hose must lie flat on the 1st concrete section with the hose clamps spaced at 150mm apart. If the concrete surface is rough, then the hose clamp spacings need to be closer so the hose is touching the surface of the concrete.
  3. The standard length of injection hose, between injection points is approximately 10-12 metres. This will help achieve an ultimate injection process.
  4. At the injection point locations where each individual hose length meets, an overlap of 150mm is required and with the two hoses laid parallel to each other at a distance of 30mm apart.
  5. The Injection Points are to be installed in such a way as to allow access at all times.
  6. For guaranteed security and performance, it is recommended that two layers be placed if the concrete substrate is greater than 1000mm wide or thick.
  7. Overlength applications of up to 30 metres are possible but the correct installation procedures, and
    use of SX-T Acrylic Gel injection material must be used via a 2K Pump.

Note : Please refer to the manufacturer’s installation procedures and guidelines (available upon request)

 

Simple Injection Process

  1. Check the continuation of the hose by flushing with water or with air.
  2. The hose is injected via the injection point until traces of the injected material are discharged from the vent end (opposite end of hose). This vent end is closed by means of an injection nipple as soon as the injected material flows freely (without air pockets) from the vent.
  3. The flow and extent of the injection material in the concrete joint can be monitored during the injection process by means of the injection pump’s pressure gauge, if using a 2K pump.
  4. The injection process is continued until constant pressure has been reached. Constant pressure indicates that the concrete joint is absorbing no more injection material and thus signalling the end of the process.
  5. Any injection material still within the injection hose is simply flushed out by means of a water pump or a 3K pump unit. Minimal pressure is required and it is simple and easy to achieve.
  6. On completion of the flushing process, the injection channel is ready for future re-injections, if required.

Note : Installation and injection method processes are available upon request. Fully trained specialist contractors are available to perform the installation and injection processes.

Proven Injection Hose Systems

 

For Construction Joints, Connections, Back-Up Systems and other Special Applications

Proven Injection Hose Systems is a range of specially designed solid core PVC Injection Hose Systems which can be installed in concrete construction joints to waterproof them and also to seal any cracks or voids in the joint areas. The systems seal joints so that they are watertight and also they provide a complete maintenance solution if any leaks occur in the future. With some of the Injection products, the systems can be used for multiple re-injection – a significant advantage over other injection hose systems. Developing the Re-Injectable Hose System was a logical step forward in improving waterstopping technology and utilizing this state-of-the-art solution allows “zero leak tolerance’ in important structures. The range consists of three types of injection hose, with easy, safe and fast installation, simplifying the work on site and ensuring watertight joints. Injection hoses can be installed in very difficult working environments and normally without any additional works or changes in the reinforcement or formwork design and fixing. They provide a unique solution and can be used where other waterproofing systems can not even be installed.

 

Advantages

  • 20 years international references
  • Includes re-injectable systems
  • High performance waterproofing
  • Very cost effective
  • Can be used in complex and difficult situations
  • No additional formwork or reinforcement work
  • Ideal back-up in combination with water stops
  • Provides solutions for critical applications

 

Basement

It provides easy and cost effective joint sealing for basement waterproofing. It seals difficult joints and complex details.

Infrastructure

For infrastructure projects, the systems are easy to install and cost effective for effective watertight joint sealing. They can also be used for back-up security in combination with water stops.

Water Tanks

The systems provide high security in water tanks and other water retaining structures. The possibilities with the different Injection products ensures high performance even under difficult conditions with variable loading etc.

Industrial Buildings

In combination with the range of chemically resistant Injection resins, the systems provide high security waterproofing for all types of different industrial production and processing facilities.

Refurbishment

The systems can be installed on very uneven surfaces and therefore can be used to seal joints in damaged concrete structures. As a result the systems are ideal and widely used in refurbishment projects.

 

Injection Hose Systems – Main Applications

Producing Watertight Structures – The Key Technologies for Success

 

 

Construction Joints

The systems provide highly cost effective joint sealing for almost every type of concrete construction joint, including complex and difficult to access joints, where hoses can often be the easiest and most secure method of joint sealing.

Backup Security for Water stop Systems

The systems are also important as back-up security for other sealing systems, particularly in combination with water stop systems. Injection Hoses ensure that any inadequate concrete or other potential leaks can easily be sealed with Injection products.

Connections to Existing Structures

If a new development is to be connected to an existing structure, then the systems provide the ideal solution for the construction joint, As the systems can be installed on rough and uneven surfaces, they can easily seal any inadequate concrete or other problems in these areas.

Special Applications

The systems can also be used for many other sealing applications that can be designed for injection of the joints or even the whole area around the joints. They are extremely versatile and the systems can also be installed on many different construction substrates as well as concrete, including stone, metals, plastics etc..

 

A Full Range of Injection Sealing Systems

IHT 1

This unique valve technique has now been used for more then 20 years. Many important structures around the world have been sealed with this system and it is the leading re-injectable system for use in many difficult situations:

  • Over 20 years experience
  • Re-injectable
  • Easy and fast to install

Technical Data

PVC based hose with four neoprene strips in lateral grooves over staggered openings to the central core, all in a webbed mesh. This creates the unique localised valve effect.

Shape: round

Internal Ø: 6 mm

External Ø: 13,5 mm

 

IHS 1

Two systems in one – this is a combination of an injection hose with additional hydrophilic rubber strips as well as our unique valve system. An injection is then only necessary in any areas where the hydrophilic strips can not expand sufficiently to achieve watertightness:

  • Injection is not always necessary
  • Provides double the security

Technical Data

Rubber based hose with three swellable strips and three neoprene strips in lateral grooves over staggered openings to the central core.

Shape: triangular

Internal Ø: 8 mm

Height: 24 mm

 

IHE 1

This is the most economic version of the injection hoses with a simple but reliable design. Its flexibility allows easy and rapid installation. It is often used as back-up security for other joint sealing systems such as water stops:

  • Re-injectable
  • Easy and rapid installation
  • Ideal for back-up security

Technical Data

Spiral slot perforated PVC core hose covered in a foamed plastic layer with staggered perforations for the Injection material to pass through.

Shape: round

Internal Ø: 6 mm

External Ø: 12,7 mm

 

Practical Proven Solution

Around the systems a full range of proven accessories has been developed. Without these alternative fixing options and the supporting injection materials and equipment for example, an injection hose system can not meet the practical challenges on site.

The fast, easy and safe handling and installation of the injection hose systems is based on using these accessories.

  • Vent-ends and connecting pieces for easy assembly
  • Different fixings and fixing possibilities for different installation conditions.
  • Alternative solutions for the installation and location of the vent-ends.
  • Efficient injection equipment including connections, injection pumps, vacuum pumps (for multiple-injection work)
  • Injection materials – an extensive range of injection products.

 

Unique Multiple Injection / Re-Injection Technology

With water dispersed and cleanable injection materials such as acrylic resins or microfine cement suspensions the injection hoses can be cleaned after the injection and then used again immediately or reused at a later date. This provides high security.

Phase 1: Concrete Pour

When the concrete is placed around the hose, the external pressure of the concrete closes the neoprene strips over the injection openings, sealing them off and the injection channel remains clear.

Phase 2: Injection

When the internal injection pressure is applied in the hose, it compresses the neoprene strips and allows the injection material to flow out from the recessed openings. This controlled action ensures a uniform discharge of the injection material as required over the full length of the hose.

Phase 3: Cleaning the Hose

When using a suitable Injection material, the hoses are easily flushed clean with water using vacuum pressure. This negative pressure also reseats the neoprene strips, preventing any injected material from being drawn back into the hose.

Phase 4: Ready for Future Injection

The Hose injection system is ready for re-injection if and when it is needed.

 

Site Installation and Injection

The systems are designed to be versatile, fast and easy to use on site in many different applications and environmental conditions. The complete range of practical accessories, tools and equipments ensures practical solutions and alternative injection possibilities to provide joint waterproofing solutions wherever they are needed.

  • Fast and easy installation
  • Mixing of an acrylic injection resin
  • Practical accessories and equipment
  • Simple injection process on site
  • Back-up security for a water stop system
  • Waterproof and sealed by injection

Job Site Guide For Hose Injection Procedures

Areas adjacent to joints observed as having honeycombing or improper concrete consolidation shall be patched using hydraulic cement or other appropriate repair material as approved by the Engineer to prevent significant loss of injection resin during injection.

 

Necessary Tools and Equipment

  • Injection pump (a.k.a electric airless sprayer) equipped with a hose and ball valve
  • Vacuum/diaphragm pump if re-injection is desired
  • Vacuum Pot (a.k.a pressure pot or painters pot), for capturing excess injection resin, if re-injection is desired
  • Two Packertongs per injection pump. Type 1 and Type 2 Packertong size available.
  • One Sliding Clutch per injection pump. Sliding Clutch shall be replaced periodically as the seal wears through normal usage.
  • Plenty of clean 5-gallon buckets and measuring devices capable of measuring liters and milliliters
  • Plenty of clean water
  • Sponge, cloths and/or rags, stirring spoon
  • Extra PVC hose (clear or green) and connecting nozzle to extend the length of the installed hoses for easier access
  • Optional – Mineral Spirits for cleaning cured injection resin
  • Regular Dish Washing Soap/Detergent for cleaning equipment of uncured injection resin.

 

Injection Procedures

Locate junction boxes which house appropriate vent ends for each designated hose segment.

Open junction box to expose hose vent ends. The hose vent ends shall be terminated using clear and green non-perforated PVC hose. The color coded vent ends help identify which hose is being injected. For each individual hose segment, the two ends shall be terminated with a different color vent hose. For example, after opening a junction box and exposing the vent ends, if you select a green vent end to inject, the opposite end of that hose segment should be terminated with a clear vent hose. If the applicator is unsure of what vent end corresponds with what hose, check by pumping clean water through each hose segment. Pumping clean water through the hose is highly suggested not only to identify the opposite vent end, but also to check for any hose blockage or damage, or excessive voids in concrete that may lead to excessive loss of injection resin during hose injection.

 

 

Insert the Packertong into the injection vent end and connect pump to the Packertong. The pump hose assembly should be terminated with a Sliding Clutch (button head coupling). The Sliding Clutch will slide over the “button head” fitting on the Packertong to connect the pump to the Packertong (see Figure 3).

 

 

When the injection material is observed flowing out the opposite end of the hose, stop the pump (or close the ball valve on the pump assembly). Close off the vent end with another Packertong tool.

Once the vent end is securely closed off with the Packertong, start the pump and continue to inject into the hose at a pressure between 100 and 600 psi. Slow, low-pressure injections are more effective than rapid, high-pressure injections. A successful injection will be indicated by the pump’s refusal of injection resin (the piston will quit pumping) or by the sight of seeping along the length of the joint. At that time, hold the pressure between 500 and 600 psi for approximately 2 more minutes.*

*Note: The held pressure does not have to register 600 psi to be effective. Maximum injection pressure and injection time will vary from hose to hose and is not an “exact science”. It depends heavily on the degree of concrete consolidation, concrete thickness, and concrete cover over the waterstop. Determining successful injection is more a function of sight and sound…sight of injection resin flowing out of the joint being injected or the sound that the pump makes during injection. If you see injection resin flowing from the joint, the pump may not be able to establish an injection pressure of 500 to 600 psi, nor hold a lower injection pressure constant for 2 minutes. However, sight of injection resin seeping from the joint throughout the entire length of the joint shall indicate a successful injection. The pump can be stopped at that point and one can assume a successful injection of this hose segment. Additionally, a joint can be successfully injected without seeing injection resin seeping from the joint. In this situation, one must also listen to the sound of the pump. If the pump piston is not moving, indicating the joint is not accepting any additional injection resin, it simply means that the joint was well constructed and the joint is so “tight” that the injection resin will not seep from the joint at injection pressures under 600 psi. If the pump refuses to pump any additional material, and the injection pressure can be held constant between 500 to 600 psi for approximately two minutes, then it can be assumed that the joint is successfully injected even without seeing injection resin seep from the joint. The constant pressurization is done to ensure that an even distribution of material is guaranteed over the entire length of the joint.

Once the hose segment is successfully injected per the previously described criteria, disconnect the pump and hook it up to the Packertong at the opposite hose segment end, leaving the Packertong plugged into the end that was just injected. Re-inject the hose from the opposite end to ensure that the entire joint has been filled. In most cases, the joint will already be successfully sealed and the pump will refuse to inject any additional material. Use the previously described procedure/criteria for injecting and determining successful joint injection on this end of the hose as well.

This procedure must be completed within the specified gel time of the material, yet still allowing time for vacuuming and rinsing operations before the Injection gels.

Turn off the pump, disconnect the pump hose from the Packertong, and remove both Packertongs from the hose segment.

 

Hose Vacuum Procedures

Connect the vacuum/diaphragm pump to the pressure pot using additional clear PVC vent hose to connect the two. Connect the pressure pot to one of the ends of the injected hose segment using an additional length of clear PVC vent end hose and additional connecting nozzle. It does not matter which end of the hose segment you connect the pressure pot. Extend the opposite end of the hose segment with additional PVC vent end hose and additional connecting nozzle. Place that end of the hose segment into a 5-gallon bucket filled with clean water.

Start the vacuum pump. Verify a hose suction pressure by placing a finger over the vent end hose in the bucket of water to see if you feel a “sucking” pressure.

During the vacuum process, the injection resin which was left inside the core of the hose will be vacuumed out of the interior diameter and rinsed by the water from the bucket. The neoprene strips will be “sucked” over the injection port holes in the hose, acting as a “one-way valve” and none of the previously injected resin will be vacuumed back into the hose segment.

The entire length of the hose shall be rinsed clean. When the water flow observed at the vacuum pump end is clear by inspecting the material flow through the clear vent hose, stop the pump.

Disconnect the pressure pot from the hose and remove any additional PVC vent end hose and additional connecting nozzle connected to the vent ends of the segment. Insert the yellow plastic closure plugs into each vent end of the hose segment. Replace vent ends into each appropriate junction box and properly secure junction box face plate flush with the wall or surface.

Injection and clean-out of this length of hose segment is entirely complete!

It is a good idea to monitor and record the amounts of grout injected into each hose segment.

Injectable Hose with Integral ‘Valves’ for Sealing Construction Joints in Watertight Structures

 

IH 1

 

Injectable hose with unique integral ‘valves’ for sealing and possibly resealing construction joints in watertight structures against water and salt water ingress.

It is used to seal construction joints in watertight structures against water and salt water ingress. It is cast into the construction joints with the concrete.

To seal the joint IH 1 can be injected with suitable injection materials including acrylic and polyurethane resins, or microfine cement suspensions.

When it is necessary to reseal the joint again by re-injection, provided acrylic resin or microfine cement is used for the initial injection.

 

Characteristics / Advantages

  • Uses unique valve techniques for injection
  • Re-injectable with Sika acrylic resins and microfine cement suspensions.
  • One-time injectable with Sika polyurethane resins
  • Easy to install
  • Tested in water pressures up to 10 bar (100m)
  • Suitable for many different structures and construction methods
  • Long-term references on many international project

 

Approval / Standards

MPA NRW: P-22-MPANRW-2368/2 – German Approval for use in construction joints (01.12.04)

WISSBAU: Tested for use in construction joints (28.01.04)

 

Packaging

Supplied as a Combi-pack in a cardboard box containing:

  • 200 m IH 1
  • 10 m green PVC-hose (inlet)
  • 10 m white PVC-hose (outlet)
  • Accessories (2 m connecting pipe, 4 m heat shrink sleeve , x 50 closure plugs, 1 can of glue, 1 roll of tape, x 800 fastening clips)
  • Also available as pre-fabricated, made to measure sections in special packs with accessories to suit for special projects (details on request).

IH 2

 

It is an injectable hose with unique integral ‘valves’ for sealing and possibly resealing construction joints in watertight structures against water and salt water ingress.

Suitable for use in hot and tropical climates.

It is used to seal construction joints in watertight structures against water and salt water ingress. It is cast into the construction joints with the concrete.

To seal the joint IH 2 can be injected with suitable injection materials including acrylic and polyurethane resins, or micro-fine cement suspensions.

When it is necessary to reseal the joint again by re-injection, provided acrylic resin or micro-fine cement is used for the initial injection.

 

Characteristics / Advantages

  • Uses unique valve techniques for injection
  • Re-injectable with acrylic resins and micro-fine cement suspensions.
  • One-time injectable with polyurethane resins
  • Easy to install
  • Tested in water pressures up to 10 bar (100m)
  • Suitable for many different structures and construction methods
  • Long-term references on many international projects

 

Form: PVC hose with Neoprene cellular profile strips encased in a nylon mesh

Appearance / Colour: Rolled, yellow / ivory coloured hose

Packaging: On rolls, unassembled, 125 m disposable reels, packed in a cardboard-box

Storage Conditions: Store in undamaged, unopened, original sealed packaging, in cool and dry conditions and at temperatures between +5°C and 35°C.

Shelf Life: Minimum 48 months from date of production when stored in undamaged, unopened original sealed packaging.

 

Shore A Hardness

Yellow inner core: 85 +/- 3

Yellow profile strips: 20 +/- 5

Elongation at Break

Yellow inner core: ≥ 250%

Yellow profile strips: ≥ 300%

Mesh: ≥ 30%

Tensile Strength

Yellow inner core: ≥ 14 N/mm2

Yellow profile strips: ≥ 3 N/mm2

Mesh: ≥ 30 N/mm2

 

System Structure

A Injection channel

B Solid hose core made of high quality PVC compound

C Lateral grooves with staggered injection openings

D Compressible neoprene profile strips (as ‘valves’) over the longitudinal grooves

E Fine webbed nylon mesh for secure fixing of the neoprene profiles

 

Internal diameter: 10 mm

 

 

 

 

Assembly Instructions

Cut to size

  • IH 2 has to be cut to the desired length
  • Prior to cutting, secure the cutting area of the hose with insulating tape to avoid fraying of the nylon mesh.

 

Accessories for the injection / vent ends

  • The fabric reinforced PVC hoses (green and transparent) are cut to the desired length (standard size approx. 40 cm = 16 ins).
  • The connection pipe and the shrink-on sleeve are cut to a length of approx. 5 – 6 cm (2’’) for each end.

Assembly

Rapid glue is applied on the connection pipe which is inserted approx. halfway into te IH 2 (fig. 1).

Rapid glue is then applied on the second half of the connection pipe. The fabric reinforced PVC hose (green or transparent) is slid over the connection pipe (fig. 2).

A shrink-on sleeve is installed in the middle covering of the connection between the PVC hose and the end and the IH 2 and heated with a hot air gun. The sleeve shrinks and firmly holds the connection area (fig. 3).

The PVC hose ends are closed with the closure plugs to avoid the entry of other materials (fig. 4).

Installation Instructions

Installation

  • The IH 2 is installed on the hardened concrete surface in the middle of the construction joint (fig. 1).
  • The minimum distance between two parallel hose sections must be 5 cm (2’’) (fig. 2).
  • If two IH 2 injection hoses cross for construction reasons e.g. at junctions, the upper of the hoses must be installed with the PVC connection hose in the overlapping area (fig. 2).

Fixing

  • The hose shall be fixed to prevent it from sliding or floating with special clips at intervals of approx. 20 – 25 cm (8’’-10’’). The clips are pressed into 6 mm (1/4’’) drilled holes (figs. 2 + 4).
  • The injection hose shall not be fastened to the reinforcement bars. The injection hose must lie flat on the concrete surface throughout and be routed in such a way that it is not buckled or constricted (fig. 3).

Junction Boxes

  • For injection operations, the injection pump is connected to the PVC connection hose vent ends which are housed in the junction boxes (fig. 5, left).
  • The IH 2 must be installed in such a way that the joint between the IH 2 hose and the PVC connection hose is completely embedded in concrete with a minimum cover of 5 cm (2’’).
  • The junction boxes must be located approx. 15 cm (6’’) above horizontal construction joints, or next to vertical construction joints
  • When installing junction boxes, the PVC hose injection and vent ends are continued approx. 10 cm (4’’) into the junction box so that the ends are accessible for injection.
  • The junction boxes or injection packers must be located where they are still easily accessible for injection later.

Documentation

The precise location and the route of the injection hoses in the structure shall be carefully recorded and detailed (in ‘as-built’ drawings).

Injection

Injection materials

The IH 2 injection hose and the injection materials are a system. Not every injection material is suitable for injection. The injection material must have the following properties:

  • Adequate viscosity (< 200 mPas at 20°C)
  • Adequate curing time (> 20 – 30 min.)

 

The IH 2 is injectable with different injection materials:

Re-injectable

  • Acrylic resins
  • Micro-fine cement suspensions

One time injectable

Polyurethane resins

 

Principles of Waterproofing Construction Joints with the IH 2 system

Concreting

Under the external fresh concrete pressure, the neoprene strips close the injection openings (‘valves’) so that no cement grout can enter the hose during the concrete placement (fig. 1 ).

Injection

 

The injection pressure from inside the IH 2 compresses the neoprene strips and allows the injection material to flow out from the longitudinal openings (‘valves’). This enables a uniform discharge of the material over the whole length of the hose and has a high level of sealing capability (fig. 2).

 

Cleaning by vacuum

When using acrylic resins or micro-fine cement suspensions for injection, the IH 2 can be flushed clean with water by applying a vacuum after the leaks are sealed and the injection work is complete. The hose is then ready for any further re-injection if and when required in the future (fig. 3 + 4).

 

Testing the water-tightness

The water-tightness of the joint can be tested by applying a defined water pressure via the IH 2 hose.

Notes on Application / Limitations

Do not use IH 2 for sealing expansion / movement joints.

Value Base

All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.

Local Restrictions

Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the product uses.

Health and Safety Information

For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.

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