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Highway Steel Bridge Expansion Joint

Basic Info

Model No.:  D480

Product Description

Model NO.: D480

Material: Carbon Steel

Customized: Customized

Application: Steel

Trademark: Haider

Origin: China

Connection: Welding

Surface Treatment: Galvanized

Certification: CE, SGS, ISO9001

Movement: 0-480mm

Specification: AASHTO

HS Code: 7308100000

Modular Expansion Joint, Bridge Expansion Joint

Modular Expansion Joint Systems have gained overwhelming worldwide acceptance for accommodating and sealing large joint movements on bridge structures. By incorporating the results of recent research activities, each joint system is designed to provide watertight, fatigue resistant, long-term, maintenance-free performance.

Design Principles

Fatigue Resistant

Modular expansion joint assemblies are subjected to millions of high dynamic stress cycles due to passing vehicle loads. Recognizing the significance of these dynamic loads on the long-term performance of expansion joint systems, Haider became the first China company to introduce fatigue-resistant design principles to modular expansion joint assemblies. It is strongly recommended that a specification which includes fatigue design provisions be included in the contract documents.

Watertight Integrity

Each Modular Expansion Joint System not only bridges the joint gap but also protects the structure from premature corrosion. Design of the strip seal sealing element is based on compression of the neoprene seal lug into the gland recess of the centerbeam and edge beam. This mechanically-locked neoprene seal not only provides excellent watertight characteristics but also achieves high pullout resistance.

Highway Steel Bridge Expansion Joint

Standard JT/T4-2004 BS5400 Section 9.2
Rubber Natural Rubber Neoprene
Hardness(IRHD) 60±5 60±5 50±5/60±5/70±5
Tensile Strength (M Pa)≥
18 17 17 15.5
Ultimate Elongation (%)≥
450 400 450/400/350 400/350/300
Compression Set 70 o C×22h 70 o C×22h 100 o C×22h
<30 <15 <30 <35
Heat Resistance Test Condition 70 o C×168h 100 o C×70h 70 o C×168h 100 o C×48h
Change in Hardness -5,+10 0,+10 <10 <15
Rate of Tensile Strength Reduction(%) <15 <15
Rate of Ultimate <20 <40 <20 <40
Elongation Reduction
Ozone Resistance 25~50pphm,20% strain 25~50pphm,20% strain
40 o C×96h 30 o C×96h
No Cracks No Cracks

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Product Categories : Bridge Expansion Joint > Modular Expansion Joint