scholarly journals Effects of Thermal Aging of Natural Rubber Bearing on Seismic Performance of Bridges

2013 ◽  
Vol 33 (3) ◽  
pp. 855-864
Author(s):  
Ju Oh ◽  
Hie-Young Jung
Keyword(s):  
Natural Rubber ◽  
Seismic Performance ◽  
Thermal Aging ◽  
Rubber Bearing

Effects of thermal aging on mechanical properties of laminated lead and natural rubber bearing

2014 ◽  
Vol 6 (2) ◽  
pp. 127-140 ◽  
Author(s):  
Dookie Kim ◽  
Ju Oh ◽  
Jeongyun Do ◽  
Jinyoung Park
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Thermal Aging ◽  
Rubber Bearing

The Effect of Thermal Aging on Mechanical Properties and Morphological Properties of Thermoplastic Vulcanizates Based on Natural Rubber and Polystyrene

2020 ◽  
Vol 990 ◽  
pp. 262-266
Author(s):  
Prathumrat Nu-Yang ◽  
Atiwat Wiriya-Amornchai ◽  
Jaehoon Yoon ◽  
Chainat Saechau ◽  
Poom Rattanamusik
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Natural Rubber ◽  
Thermal Aging ◽  
Morphological Properties ◽  
Vulcanized Rubber ◽  
Thermoplastic Vulcanizates ◽  
Internal Mixer ◽  
Processing Properties

Thermoplastic vulcanizates or TPVs is a type of materials exhibiting excellent properties between thermoplastic and elastomer by combining the characteristics of vulcanized rubber with the processing properties of thermoplastics. This research aims to study the effect of thermal aging on the morphology and mechanical properties of thermoplastic vulcanizates (TPVs) based on a mixture of natural rubber (NR) and polystyrene (PS). TPVs samples were prepared using the internal mixer at a mass ratio of NR/PS 70/30, 50/50, 30/70 and 0/100. Tensile properties and impact strength showed that when the amount of NR increased tends of impact strength and elongation at break increased but tends of tensile strength decreased. On the other hand, tends of tensile strength for thermal aging at 70°C for 3 days increased when the amount of PS increase. The blending ratio of NR / PS at 70/30 is the best. It gave a worthy increase from 19.94 MPa to be 25.56 MPa (28.18%).

The Effects of the Rubber Bearing on the Seismic Performance of the Aqueduct-Water Coupling Structure

2013 ◽  
Vol 275-277 ◽  
pp. 1370-1373
Author(s):  
Qiu Hua Duan ◽  
Dan Dan Zeng ◽  
Lu Feng Yang
Keyword(s):  
Numerical Analysis ◽  
Temperature Stress ◽  
Seismic Performance ◽  
Water Depth ◽  
Coupling Structure ◽  
Rubber Bearing ◽  
Bridge Structures ◽  
Rubber Bearings ◽  
Water Bridges

Rubber bearings are widely used in bridge structures. The aqueduct structures are water bridges, so rubber bearings are often set at the end of the aqueducts. Rubber bearing cannot solve the problems such as temperature stress and supporting inhomogeneous settlement, but also play role of isolation damping. This paper mainly studies on the effects of the water-depth with changing rubber bearing on the seismic performance of the aqueduct-water coupling structure by numerical analysis.

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