ISO 22762-1:2018

INTERNATIONAL ISO
STANDARD 22762-1
Third edition
2018-10
Elastomeric seismic-protection
isolators —
Part 1:
Test methods
Appareils d'appuis structuraux en élastomère pour protection
sismique —
Partie 1: Méthodes d'essai
Reference number
©
ISO 2018
© ISO 2018
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Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and cross-section of isolator . 4
4.1 Symbols . 4
4.2 Cross-section of isolator . 7
5 Rubber material tests . 9
5.1 Test items . 9
5.2 Test conditions and test pieces . 9
5.3 Tensile properties . 9
5.4 Ageing test .10
5.4.1 Ageing properties of inner rubber .10
5.4.2 Ageing properties of cover rubber .10
5.5 Hardness .10
5.6 Adhesion .10
5.7 Compression set . .10
5.8 Dynamic shear properties .10
5.8.1 General.10
5.8.2 Test equipment .11
5.8.3 Test pieces .11
5.8.4 Test conditions.12
5.8.5 Test results .12
5.9 Fracture properties .13
5.10 Brittleness point .13
5.11 Ozone resistance.13
5.12 Low-temperature crystallization .13
6 Isolator tests .14
6.1 General .14
6.2 Compression and shear stiffness tests .14
6.2.1 Compression properties .14
6.2.2 Compressive-shear test .21
6.3 Various dependence tests .27
6.3.1 Strain dependence of shear properties .27
6.3.2 Compressive force dependence of shear properties .28
6.3.3 Frequency dependence of shear properties.30
6.3.4 Repeated deformation dependence of shear properties .32
6.3.5 Temperature dependence of shear properties .34
6.3.6 Dependence of compression properties on shear strain .36
6.3.7 Dependence of compressive stiffness on compressive stress range .37
6.4 Ultimate shear properties .39
6.4.1 Principle .39
6.4.2 Test machine .39
6.4.3 Test piece .39
6.4.4 Test conditions.39
6.4.5 Procedure .40
6.4.6 Expression of results .40
6.4.7 Test report .41
6.5 Tensile testing .41
6.5.1 Principle .41
6.5.2 Test machine .42
6.5.3 Test piece .42
6.5.4 Test conditions.42
6.5.5 Procedure .42
6.5.6 Expression of results .43
6.5.7 Test report .44
6.6 Durability testing .44
6.6.1 Degradation test .44
6.6.2 Creep test . .46
6.6.3 Fatigue test .50
6.7 Reaction force due to low-rate deformation .52
6.7.1 Principle .52
6.7.2 Test machine .52
6.7.3 Test piece .53
6.7.4 Test conditions.53
6.7.5 Procedure .53
6.7.6 Expression of result .54
6.7.7 Test report .54
Annex A (normative) Determination of accelerated ageing conditions equivalent to
expected life at standard laboratory temperature (23 °C or 27 °C) .55
Annex B (normative) Inertia force correction .59
Annex C (normative) Friction force correction .61
Annex D (normative) Determination of coefficient linear thermal expansion .64
Annex E (informative) Alternative methods of determining shear properties .
...