High Elasticity EPDM Bridge Expansion Joint with Tear Resistance

• Customization: Available
• After-sales Service: 1 Years
• Certification: DIN, GB, BS, ASTM, AISI
• Model NO.: BJ1424
• Function: Protect, Support
• Position: Upper Structure
• Type: Telescopic Device
• Advantage: Nti-Corrosion
• Usage: Bridge, Road
• Surface Treatment: Hot Dipped Galvanized
• Alloy or Not: Non-Alloy
• Unit Length: 1m-12m
• Shape: Finger Steel Strip
• Feature: Water Resistant, Durable, Anti-Corrosion, Fire Res
• Color: Black
• Packing: on The Pallet
• Technics: Extrusion
• Transport Package: Pallets
• Specification: Customizable
• Trademark: N/A
• Origin: China
• HS Code: 7604299000
• Production Capacity: 600PCS/Month

Product Description

Bridge Expansion Joints

The ridge expansion joints device consist of steel reinforced rubber modules, designed to absorb the expansion, contraction, translation and rotation movements of road bridges, with remarkable comfort to traffic, effectively sealed, low maintenance and easy replacement.

Elastomeric expansion joint for bridge

The plate rubber expansion joint is designed according to the principle of low rubber shear. It uses the steel plate as the skeleton, assembled in sections, and connected with bolts, so that the driving will be safe, there will be no accidents easily,and it will be balanced andcomfortable.

Rubber bridge expansion joints are mainly made of rubber, steel plate and angle iron. The bridge plate type rubber expansion joint device is designed and manufactured based on the principle of low rubber shear. It adapts to the expansion displacement of the bridge deck through the shear deformation of rubber, and has low horizontal (tension and compression) reaction force, which is beneficial for the bridge span structure. The plate type rubber expansion joint is made of steel plate as the skeleton, assembled in sections, bolted together, installed reliably, will not fall off, the joint is flat, and the driving is balanced and comfortable. This expansion joint is made of aging resistant and wear-resistant rubber, which can withstand the repeated loads of vehicles and has a long service life. Due to the incompressibility of rubber, the specially shaped expansion groove on the rubber plate can prevent upward bulging during compression of expansion joints. Apply adhesive by pouring to the bolt holes on the bottom of the expansion device and every meter of assembly, ensuring good waterproofing.

Specification

Applications

1.Thermal Movement Compensation
2.Seismic/Vibration Damping
3.Waterproof Deck Sealing
4.Multi-Directional Alignment
5.Corrosion-Resistant Expansion

Key Configurations

1.Strip Seal Joints
Configuration: Preformed rubber gland + parallel steel edge rails.
Movement Range: 40–80 mm (axial).
Use Case: Medium-span highway bridges with moderate thermal movement.

2.Finger Plate Joints
Configuration: Interlocking steel fingers + rubber sealing caps.
Movement Range: Up to 300 mm.
Use Case: Heavy-load bridges (e.g., industrial zones, ports).

3.Modular Joints
Configuration: Multiple steel center beams + rubber/sealant-filled gaps.
Movement Range: 160–2,000 mm.
Use Case: Long-span bridges (cable-stayed, suspension).

4.Elastomeric Compression Seals
Configuration: Bulb-shaped rubber element compressed between concrete edges.
Movement Range: 20–100 mm.
Use Case: Short-span urban bridges with low traffic impact.

Features

· The rubber covers the steel reinforcement that entails a double benefit: the rubber protects the metallic parts from corrosion and the steel reinforces the structure.

· The rubber used is highly resistant to wear, to impacts and weather conditions. Willmore bridge expansion joints are designed to endure with time.

· The Willmore bridge expansion joint design includes drain channels that provide quick water removal preventing water stagnation. This delays the aging of the joint and reduces the possibility of accidents.

· Quick and simple installation. There is no need to use heavy machinery for the installation of new Willmore bridge expansion joints or replacing worn out joints.

· Special Willmore bridge expansion joints pieces for kerbs and walkways are designed, welded and cured to measure, according to the bridge contour, which ensures its uniformity and aesthetics.

Benefits

· Impact loads are perfectly absorbed by the Willmore bridge expansion joints.

· Willmore provides comfortable traffic over the joint without impairing vehicle damping.

· Willmore ensures quit rolling traffic.

· Outstanding endurance.

· Possibility to accommodate to skewed movements.

· Willmore provides great capacity to absorb seismic movements.

· Willmore bridge expansion joints offer easy and quick installation in case of replacement of worn out joints.

· Willmore bridge expansion joints have low maintenance costs as it is practically nil.

· Rolling traffic helps self-cleaning of the Willmore bridge expansion joints.

· Replacement of damaged Willmore parts takes little time, with minimum service interruption for bridge users.

· Short delivery time. We have stock of our standard Willmore bridge expansion joints modules

Structure

Rubber bridge expansion joints are consisted of rubber, reinforce steel plate, ranura, sealing block, fitting portion, nut plate,
kidney-shaped cap, nuts and bolt.

Technical Specifications

(Custom configurations available upon request.)

Rubber bridge expansion joint Properties		Neoprene ( -25ºC~ 60ºC)	Natural ( -35ºC~ 60ºC)	Neoprene ( -40ºC~ 60ºC)
Hardness (IRHD)		60±5	60±5	60±5
Tensile Strength (Mpa)		≥15	≥16	≥14
Elongation at break (%)		≥400	≥400	≥350
Brittleness temperature (ºC)		≤-40	≤-50	≤-60
Compression set constant(Room temperature×24h)		≤20	≤20	≤20
Resistant Ozone aging (25~ 50pphm)                               20% Elongation 40ºC×96h		No cracks	No cracks	No cracks
Hot air aging (Compared with previous unaged value occurred biggest change )	Test conditions (ºC×h)	70ºC×96h	70ºC×96h	70ºC×96h
	Tensile Strength (%)	±15	±15	±10
	Elongation at break (%)	±25	±25	±20
	Hardness change(IRHD)	0~+10	-5~+10	0~+10
Salt water(23ºC×14d, 4%Concentration)	Volume Change (%)	≤+10	≤+10	≤+10
	Hardness Change(IRHD)	≤+10	≤+10	≤+10
Rubber and steel bonding peel strength(kN/m)		>7	>7	>7
oil resistance(No.1 Standard Oil, 23ºC×168h)	Volume Change (%)	-5~+10	<+45	<+45
	Hardness Change(IRHD)	-10~+5	<-25	<-25

Manufacturing Technique

NO.	Items		Index
ElastomerRubberProperty
1	Hardness (IRHD)		60±5
2	Tensile Strength(Mpa)		≥15
3	Elongation at break(%)		≥400
4	Brittleness temperature(℃)		≤-40
5	Compression set constant(Room temperature×24h)		≤20
6	Resistant Ozone aging(25~50pphm)		No cracks
7	Hot air aging(Compared with previous unaged value occurred biggest change)	Test conditions(℃×h)	70℃×96h
		Tensile Strength (%)	±15
		Eongation at break (%)	±25
		Hardness change(IRHD)	0~+10
8	Salt water(23℃×14d, %Concentration)	Volume Change(%)	≤+10
		Hardness Change (IRHD)	≤+10
9	oil resistance(No.1 Standard Oil,23℃×168h)	Volume Change(%)	-5~+10
		Hardness Change (IRHD)	-10~+5
10	Rubber and steel bonding peel strength(kN/m)		>7
InsideSteelProperty
1	Steel Yield Strength,N/mm2		≥235
2	Steel Tensile Strength,N/mm2		360-510

Company Profile

Willmore New Material Co.,Ltd.

Willmore is a professional Rubber&Construction manufacturer in China. The factory is located in Jiangsu, closed to Shanghai. After 15 years of development, it has a mature production system, a professional engineering team, a quality inspection department and a strong production line, providing a one-stop design scheme and product design for customers in many countries.

Our main products are rubber sealing products, pipe sealing ring, car sealing ring, etc., water treatment equipment, aeration pipe, aeration disk, large pipe machine, driving, etc., we pay attention to quality, and will make different solutions according to different customers, provide the cheapest price, achieve the most perfect effect, has reached more partners for customers, look forward to cooperation with you!

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.