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Approved by Ministry of Road Transport & Highways (MORTH ) and RDSO Kanta Fiex Elastomeric Elastomeric Bridge Bearings are designed-and manufactured as per IRC: 83 (part II) - 1987 with its latest amendments, to meet the requirements of Mosrt &.H Specification for road & Bridge Works to Section No : 2000 T0 Clause NO : 2005 (Electrometric Bearing) : and to international Union of Railways Code No. U (C 772 R (Use of Rubber Bearings for Railways Bridges). It consists of one or more internal layers of elastomeric bonded to internal steel laminates shall be cast as single unit in a mould and vulcanised under heat & pressure, to cater for translation or rotation of the superstructure by elastic deformation. The raw elastomer used in Bearings are poly-Chloroprene. either of Brands: Neoprene WRT, Bayprene 110, skyprene B 5. &.. Denka S-40V in order to have low crystallization rate and adequate shelf life.
The content of the Poly Chloroprene in the Bearing is not less than 60% and the ash content shall be less than 5%. The Steel laminates used in the Bearings shall meet the specification of IS : 2062.
Techinacal Data of Bearings
Physical Properties of the Elastomer Used in Bearing
|Hardness||Shore A||60 to 65||IS : 3400 (Part II)|
|Tesile Strength, Minimum||M Pa||17||IS : 3400 (Part I)|
|Elongation at break ; Minimum||%||400||IS : 3400 (Part I)|
|Compression set, Maximum||%||30||IS : 3400 (Part X)|
|Accelerated Ageing||--||--||IS : 3400 (Part IV)|
|Change in Hardness||Shore A||+ 15||--|
|Change in Tensile Strength||%||- 15||--|
|Change in Elongation||%||- 30||--|
|Adhesion Strength, Minimum||Kn/m||7||IS : 3400 (Part XIV)|
|Resistance of Ozone||--||No defect||IS : 3400 (Part XX)|