Strip Seal Expansion Joint

The Strip Seal Expansion Joint is an innovative method for effectively sealing expansion joints and structures that move up to 125 mm. Multiple variants of Single-Seal Expansion Joints Are available for construction systems exposed to traffic. The two primary functions of "rigid anchoring" and "waterproof connection" in each type of constructive system are clearly distinguished from one another. This makes it possible to precisely modify both parts, sealing profit and edge construction, by traffic road specifications.

• The seal is firmly fastened mechanically.
• There are components of continuous sealing.
• It can eject self-debris and allows for racking movement (for specific sealing element profiles)
• It is less prone to wear and tear.

For bridge structures to function accurately, bridge deck expansion joints are crucial. These joints can lead to difficulties that are disproportionately bigger than their size if they are not functioning properly. Selecting high-quality joints for use can help reduce maintenance issues with bridges. It is significant to remember that

the Indian Ministry of Roads & Highways (MORTH) has developed criteria for the design, manufacture, and installation of Strip Seal Expansion Joints. These guidelines ensure that best practices are followed and promote the effective usage of these joints in bridge-building projects.

Types of Strip Seal Expansion Joint: At Sandhya Flex, we design, manufacture, and supply strip seal expansion joints, as well as replace, supervise, and install them. We provide a broad range of services, such as production supply, manufacturing, and design. In addition, we offer services for product installation, supervision, and component replacement.

Compression Seal Joint

Compression seal joints are made specifically for 0 to 40 mm movements. These joints have two angles, and during installation, the elastomeric seal is positioned and compressed. This special design makes compression seal joints a great option for new projects and for upgrading outdated joints.

The expansion joint with a strip seal is intended for medium motions ranging from 0 to 80mm. These joints have an elastomeric seal positioned in between two edge profiles. For a secure installation, the edge profiles are cast into the structure's nosing. It is reasonable to anticipate that these joints will function for more than 25 years. Globally, strip seal expansion joints are becoming more and more anticipated by bridge consultants and engineers. The most desirable option for bridge projects is these joints because of their features, dependability, ability to withstand mild motions, and sturdy construction.

Modular Strip Seal Expansion joint :

Because of their special design, the modular strip seal expansion joints can accommodate big shifts between 0 and 2000 mm. They feature edge profiles, multiple supported intermediate beams, and modularly organised seals to accommodate joint movement effectively. Each joint seal's maximum movement tolerance is 80mm.

Procurement of Raw Material

1. Edge beam, f-type monolithic, 40 mm x 10 mm
2. Anchoring rods, 16 mm dia.
3. square ms bar 12 mm x 6 mm.

a. Anchoring rod loop type

Angle width 40 mm x 10 mm thickness as per is:2062 of grade b

Thickness 10 mm as per the clause. 7.5.1.1

Depth/height -80 mm as per cl7.5.1.1

Seal stopper height: 15 mm

(square) MS bar 12x6 mm

Anchoring rod: 16 mm dia. as per 7.5.1.2

Edge beam as per cl. 7.5.1.1 of IRC SP: 69-2011 is hot-rolled steel, including a continuous shop weld section suitable to mechanically lock the sealing element in place throughout the normal movement cycle.

Length of 16 mm dia. anchoring rod, 285 mm before bending

After bending and welding 130 mm

Cross-section area of edge beam: 1574 sq. mm

Rubber seal as per table E 7.4.2.2.1 of IRC SP-69 2011.

B. Anchoring rod stud type

The trip seal shall be cut into the required length & inserted into the steel beams by using a suitable device, pushing the EE seal into the steel. Grooves ensure the proper fit of the enhanced ease of installation. Dirt, spatter, or standing water shall not be in steel grooves during the seal; care can be taken so that there shall be no damage to the seal.

As the concrete in the recess becomes initially set. The ramp shall be placed over the joint to protect the exposed st 5, & the chloroprene strip seal from site traffic Expαγ shall not be exposed to the traffic loading before the stageway surfacing is placed.

E of slop structure, the entire length shall be covered in pieces.

O-ring rods shall be welded to the edge with the ECC.

The edge beam shall be aligned uniformly for the required length if a temporary metal strip can be welded across the edge.

Progressive paint shall be applied on the entire metal structure.

Recommended to install the expansion joint in the bearing when the temperature is distributed almost

The M-Type Strip Seal Expansion Joint is a bridge expansion joint system designed to accommodate movement between bridge deck sections while maintaining a secure and continuous sealing arrangement. The system incorporates specially designed edge beams, seal-fixing grooves, splice plates and anchor studs for reliable installation.

• M Type Strip Seal Expansion Joint profile
• 65 × 65 mm profile dimensions
• Available in 8 mm and 10 mm thickness
• Anchoring rod loop type available
• Anchoring rod stud type available
• Mechanically secured sealing system
• Continuous sealing performance
• Specially designed groove detail for secure strip seal fixing.
• Reduced susceptibility to wear and tear

T-Type Strip Seal Expansion Joint is a highly durable and efficient bridge expansion system designed to accommodate structural movements caused by temperature variations, traffic loads, shrinkage, and creep. The system consists of robust steel edge beams integrated with an elastomeric sealing element that ensures a watertight and long-lasting performance. Engineered for superior load-bearing capacity and smooth vehicular movement, this expansion joint is widely used in bridges, flyovers, and elevated structures.

• Joint gap is set based on ambient temperature conditions
• Expansion joint is positioned accurately in the blockout
• Proper alignment and leveling are ensured
• Concrete is poured with adequate compaction
• Steel components are securely anchored and welded
• Elastomeric seal is installed after curing
• Final finishing ensures a uniform riding surface

W / V Type Strip Seal Expansion Joint is a high-performance bridge expansion system designed to accommodate structural movements while ensuring a watertight seal. The system consists of specially designed W or V-shaped steel edge beams integrated with an elastomeric strip seal, providing excellent durability and smooth vehicular movement. This expansion joint is ideal for modern infrastructure projects where strength, flexibility, and long service life are critical.

• W / V profile for enhanced flexibility and strength
• Movement capacity suitable for medium to large bridge expansions
• Watertight elastomeric sealing system
• Heavy-duty steel edge beams for load distribution
• Smooth and noiseless riding quality
• Corrosion-resistant coated steel components
• Easy installation and replacement of seal