Compression Modulus of Elastomers
Tomme: LIX (LXIII) Fascicle: 2 | 2013
Pages: 157-166
Abstract text:
In civil engineering elastomers are mainly used in bridge bearings and base isolation bearings for structures located in seismic zones. This paper presents general characteristics of elastomers, measurements obtained with a Zwick hardness tester, several relationships to determine the compression modulus of an elastomer layer and experimental determination of compression modulus on elastomer specimens with different compositions: CR (chloroprene/neoprene rubber); NR (natural rubber); NR/BR (natural rubber/butadiene rubber); NR/BR/SBR+PA/PE Fibres (natural rubber/butadiene rubber/styrene butadiene rubber and polyamide/polyethylene fibres). The compression test of elastomer specimens was achieved with a Controlled Electro Mechanism Universal Testing Machine WDW. The aim of this study was to investigate and define the relationship between compression and shear modulus, hardness and shape factor. The results show reasonable agreement between theoretical and experimental values.
Key Words:
elastomer; Shore hardness; compression modulus; shape factor.
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