Item | Index | |
Ultimate compressive strength Ru(Mpa) | ≥70 | |
Compressive modulus of elasticity E (Mpa) | E±E×20% | |
Elasticity of shear modulus G1(Mpa) | G±G×15% | |
Elasticity of shear modulus after aging G2(Mpa) | G±G×15% | |
Found angle tangent tanθ | Concrete Bridge | ≥1/300 |
Steel Bridge | ≥1/500 | |
Found PTFE plate and stainless steel surface friction coefficient (grease) | ≤0.03 |
Technical index of elastomeric beairng pad | Neoprene Rubber | Natural Rubber | |
Hardness (IRHD) | 60±5 | 60±5 | |
Strength Tensile (Mpa) | ≥17 | ≥18 | |
Elongation at break (%) | ≥400 | ≥450 | |
Brittleness temperature (ºC) | ≤40 | ≤-50 | |
Constant compression permanent deformation | ≤15 | ≤30 | |
Resistance to ozone aging test (test conditions,20% elongation,40ºC×96h) | 100ppmm | 25ppmm | |
No cracking | No cracking | ||
Hot air aging test (The biggest change comparing with before aging numerical) | Test conditions (ºC×h) | 100×70 | 70×168 |
Strength Tensile (%) | -15 | -15 | |
Elongation at break(%) | -40 | -20 | |
Variation in hardness(IRHD) | 0,+10 | -5,+10 | |
Strength of rubber and steel Peel adhesive (KN/m) | >10 | >10 | |
Strength of four fluorine plate and rubber (KN/m) | >7 | >7 |