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EXPANSION & CONTRACTION JOINT SYSTEM

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EXPANSION & CONTRACTION JOINT SYSTEM 2018-03-19T12:48:21+00:00

EXPANSION & CONTRACTION JOINT SYSTEM

Hind Hydro swell

Category: EXPANSION & CONTRACTION JOINT SYSTEM

HYDROSWELLING JOINT SELANT FOR CONSTRUCTION JOINTS & COLD JOINTSpdf1

Hind Hydroswell is a flexible strip, fabricated from hydrophilic expanding rubber in combination with chloroprene rubber. As soon as it comes into contact with water or any other liquids, the ultimate result, it expands to make a water tight seal all around.

USES 

Hind Hydroswell when compacted in between prefabricated concrete elements or in-situ concrete swell and expands when it contact with water filling voids in the joints.  Due to its flexibility and the capacity of swelling the movement of the construction is absorbed by Hind Hydroswell.

FEATURES AND BENIFITS                     

The swell-capacity of Hind Hydroswell is infinite and reversible, as a result the durability and the effectiveness for its application gets enhanced throughout the designed life span of the construction.

APPLICATION 

Hind Hydroswell is designed to resolve all waterproofing problem in the field of civil construction. It is used to make construction and cold joints water tight. It has its application in pipe penetrations , sewage systems , sealing of annular opening for pipe insertion in concrete walls  and subterranean prefabricated concrete elements.  Hind Hydroswell  has already proved its efficient functioning in water reservoirs, swimming pool construction joints, underground car parks, water treatment plants and underground basements.

INSTALLATION PROCEURE

SURFACE PREPARATION

The surface of the joint should be even, completely dry and free from dust ,oil, grease and laitance. It should be fully ensured that the joint is dry before installing Hind Hydroswell. If moisture or humidity persists, use of a hot air blower is recommended to make the joint surface absolutely dry. 

APPLICATION OF ADHESIVE FOR CONTACT

Application of adhesive (glue) is to be done on concrete and Hind Hydroswell. The adhesive should be allowed to become tacky before application to obtain complete adhesion to the surface. Hind Hydroswell is pasted with the smooth and even side towards the existing concrete surface by pressing it onto the tacky adhesive.

INSTALLATION

Hind Hydroswell is placed in the middle of the joints, between the inner and outer reinforcement bar. The concrete cover around Hind Hydroswell should be minimum of  7cm to counter balance the expansion pressure exerted by the strip. The ends of the Hind Hydroswell are to be butted together. When used in in-situ concrete, the strip can be nailed to prevent from slipping away during concrete pour.

PROPERTIES 

Aspect Black  flexibele rubber strip
Density 1.56 0.05
Tensile Strength 70 -72 Kg/cm
Elongation at break 625%
Hardness (JIS- A) 47

PACKING

5 X 15 Mtr. Roll per Cartoon.

HANDLING PRECAUTION

Hind Hydroswell is to be stored in a cold and dry place and should be protected from dampness for good results.

Hind Injecto Tube

Category: EXPANSION & CONTRACTION JOINT SYSTEM

REINJECTABLE GROUTING HOSE FOR PREVENTION OF LEAKAGES IN CONSTRUCTION AND COLD JOINTS IN CONCRETEpdf1

Hind Injecto Tube is an advanced, specially designed injection hose system to prevent passage of water through construction joints. The hose is built up to be tough, flexible and resilient in nature and is not affected at low temperature and immersion in water. It has a solid red inner core with a injection hole running in longitudinal direction through the centre. Three moulded grooves are designed which runs along the entire length of the hose. Few number of openings 2.5 mm in diameter at a spacing of 10 cm apart appears in the grooves in staggered way. Strips made out of closed cell neoprene covers the three grooves and it functions as a one way valve. The entire hose is housed in a wide meshed nylon fabric sleeve.

USES

Hind Injecto Tube is recommended for use in construction and cold joints, water retaining structures, tunnel, sewage treatment plant, construction of underground structures around pile heads & basements.

ADVANTAGES

  • 1. Easy installation even at complicated details.
  • 2. No requirement of drilling for fixing, hence concrete is not damaged.
  • 3. Its reinjection options helps to stop leakages caused by settlement or any type of structural movement. It also helps to prevents leakages at a later stage of its installation.
  • 4. It is built up of a solid inner core and is not damaged under  concrete pressure making the injection material flow smoothly without and
  • 5. Being chemically inert, it does not deteriorate even if  injection of materials like polyurethane, epoxies and cement is done.
  • 6. It is highly flexible and is easily installed at corners without cutting or jointing.
  • 7. It can withstand high and low injection pressure.

INSTALLATION

It has to be always ensured that before installation, the correct type of injection hose is selected for the project along with all accessories and equipements.

Surface Preparation

The concrete surface shall be smooth , clean, free from oil or grease and contamination. If any honey comb are existing near the joint  it is to be properly patched off and further cleaned to make it free from dust and all loose materials.

Assembly/Fixing of Hose

The injection hose should normally be placed as close as possible to the centre line of the slab or wall for a suitable length plus the outlet and inlet vents. This vents allow the injection and each vent are identified with different colours  (white/red). The length of this  vents are between 400 -700 mm long and are selected as per project requirements. The outlet and inlet vents are housed in boxes or catchers and placed at a convenient place to ease injection operation. Normally hose clips are used for fixing of the hose. Vent ends to be sealed with caps so that green concrete does not go inside and choke the hose when set.

Injection

The injection pressure initially should be between 70-165 psi. Once the injection material fills up the joint area the pressure is to be increased from 540 -650 psi and maintained for 4-5 minutes so that the injection material is allowed to flow and penetrate all the weak areas and pores in concrete. piston type pumps are used for injection operation.

Note: Before injection it is to be ensured that the age of the concrete is more than 28 days old.

PROPERTIES

Material PVC
Internal Dia 6mm  to 11mm
External Dia 11mm to 19 mm
Injection Opening 6mm to 8mm
Typical Injection length 10 to 15 Mtr.
Injection Material Cement, Micro-fine Cement, Resins and Polyurethane Grouts.

SHELF LIFE

It has any indefinite storage life and should be stored in a place away from oil, dust concrete rubbles etc

PACKING

As  per requirement.