Bridge Bearing Pads

Bridge Bearing Pads are specially designed with one or multiple layers of elastomers that are bonded to internal steel laminates. These bearing pads are widely used in the construction of bridges and other structures for bearing the vertical load. These elastomeric bearing pads are available in compliance with the latest standards of IRC : 83 (Part II) – 1987.

Usage & Application

Over bridges
Railway bridges

Quick Facts

Multiple layers
Excellent compressive strength
Highly strong
Resistant to weathering
Immune towards UV radiation and ozone
Excellent absorption of loads
Low crystallization rate

No.	Characteristics	Unit	Values	Testing Std
1	Hardness	Shore A	60 to 65	IS : 3400 (Part II)
2	Tensile Strength, Minimum	M Pa	17	IS : 3400 (Part I)
3	Elongation at break, Minimum	%	400	IS : 3400 (Part I)
4	Compression set, Maximum	%	30	IS : 3400 (Part X)
5	Accelerated Ageing	-	-	IS : 3400 (Part IV)
5(a)	Change in Hardness	Shore A	15
5(b)	Change in Tensile Strength	%	-15
5(c)	Change in Elongation	%	-30
6	Adhesion Strength, Minimum	kN/m	7	IS : 3400 (Part XIV)
7	Resistance to Ozone	-	No Defect	IS : 3400 (Part XX)

Technical Data

10 KN is equivalent to 1MT
Design load of the bearing is equivalent to 10 M Pa
Shear modulus of the bearing shall be between 0.8 & 1.2 M Pa
The ultimate compressive strength of the bearing shall be more than 60 M Pa
Dimension can also be designed as per requirements
Steel laminates used in the bearings are in conformation with the IS : 2062 standards

Construction

Raw materials used in the bearing is poly- Chloroprene from the following brands:

Neoprene WRT
Bayprene 110
Skyprene B 5
Denka S-40V

In the construction of bearing

Content of poly chloreprene is not less than 60%
Ash content is less than 5%

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