EXPANSION & CONTRACTION JOINT SYSTEM
HYDROSWELLING JOINT SELANT FOR CONSTRUCTION JOINTS & COLD JOINTS
Category: EXPANSION & CONTRACTION JOINT SYSTEM
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.
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.
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.
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.
|Aspect||Black flexibele rubber strip|
|Tensile Strength||70 -72 Kg/cm|
|Elongation at break||625%|
|Hardness (JIS- A)||47|
5 X 15 Mtr. Roll per Cartoon.
Hind Hydroswell is to be stored in a cold and dry place and should be protected from dampness for good results.
REINJECTABLE GROUTING HOSE FOR PREVENTION OF LEAKAGES IN CONSTRUCTION AND COLD JOINTS IN CONCRETE
Category: EXPANSION & CONTRACTION JOINT SYSTEM
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.
- 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.
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.
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.
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.
|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.|
It has any indefinite storage life and should be stored in a place away from oil, dust concrete rubbles etc
As per requirement.