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- Title
Design of Elastomeric Bridge Bearing Pad Compound Formula Based on Hydrogenated Natural Rubber.
- Authors
Puspitasari, Santi; Cifriadi, Adi
- Abstract
Laminated elastomeric bearing pads, commonly made of natural or chloroprene rubber, function as an isolation system in bridges or flyover structures. In this research, the feasibility was evaluated of using hydrogenated natural rubber (HNR) as base elastomer in steel-laminated bearing pad production by designing the rubber compound formula. The compounding procedures for the HNR used various sulphur vulcanization systems and carbon black filler types. The physical and mechanical tests results showed that only the hardness parameter could fulfill the standard quality requirement of commercial elastomeric bearing pads in the range of 50-70 Shore A, as stated in the AASHTO M251 materials specification. The tensile property and compression set value of the HNR vulcanizates were below the required values. This was due to low rubber-filler interaction and rigidity of the crosslink network. The low interaction was more evident with increased carbon filler particle size. By applying the semi-efficient vulcanization system and using N220 as carbon filler in designing the compound formula, HNR can be regarded as a promising alternative base elastomer in elastomeric bridge bearing pad manufacture. Nevertheless, it is necessary to improve the procedure to achieve better tensile properties and compression set.
- Publication
Journal of Engineering & Technological Sciences, 2019, Vol 51, Issue 5, p649
- ISSN
2337-5779
- Publication type
Academic Journal
- DOI
10.5614/j.eng.technol.sci.2019.51.5.4