Elastomeric Pads are used to control the interaction of loads and movements between beams and piles that support a given structure, the main use of which is in bridges. In the bridges are part of its structural set, helping a normal displacement and partially absorb the energy of thermal expansion of the beams.

Types of Pads

Each pad plays a particular role based on structural calculations, we can distinguish the following types.

This process begins with the reception of the requirements specified by the client, determines the type of pad and is categorized as follows:

The simple pad is made of only rubber. High quality vulcanized neoprene according to ASSHTO, ASTM, Nevi-12 standards.

The composite pad is made of high quality vulcanized neoprene rubber according to ASSHTO, ASTM, Nevi-12 standards.

This pad has as reinforcement inner steel plates manufactured under ASTM A36

The composite pad is made of high quality vulcanized neoprene rubber according to ASSHTO, ASTM, Nevi-12 standards.

This pad has as reinforcement inner steel plates manufactured under ASTM A36

Sliding Elastomeric Pads are used in construction with temperatures in the work up to 50 ° C. The pads can absorb horizontal displacements in multiple directions. They transmit the forces due to the weight of the structure itself and in the case of the bridges also help to transmit the forces due to the acceleration and deceleration of the vehicles.

The composite pad is made of high quality vulcanized neoprene rubber according to ASSHTO, ASTM, Nevi-12 standards.

This pad has as reinforcement inner steel plates manufactured under ASTM A36

characteristics

All our pads are custom-made, based on our customers’ specifications.

  • They are made up of layers of elastomer and steel plates.
  • High quality vulcanized Neoprene rubber in accordance with AASHTO standard.
  • Steel Plates Standard ASTM A36
  • Standard NEVI-12

Neoprene technical specifications

Test

Value

Units

Testing method

IR spectroscopy Neoprene Espectrum FT-IR ASTM D3677-10
Indentation hardness 65±5* Shore A ASTM D 2240
Burst load >190 Kgs /cm² ASTM D 412
Elongation at break 45 a 55 ≥425
56 a 65 ≥350
66 a 75 ≥300
% ASTM D 412
Steel-rubber adhesion ≥11.8 N/mm ASTM D429 Method B
Tearing resistance ≥32 kNm ASTM D624 (Molde C)
Low temperature resistance -30 ºC ASTM D 1329
Resistance to ozone No cracks ASTM D 1149  (D518 method A) 100 ppm O (100 horas a 38ºC)
Remaining deformation 35 % de. máxima ASTM D 395 Method B (22 horas a 100º C)
Thermal Aging 15
-15
-40
± Shore A
% Initial load
% Initial elongation
ASTM D573 By hot air (70 HORAS 100º C)
Construction method for bridges AASHTO M251

Technical Characteristics of A36 Steel

Elastic limit (MPA) ≥ 250
Resistance to attraction (MPA) ≥ 390
Minimum elongation 200 mm (%) ≥ 20
Minimum elongation 50 mm (%) ≥ 23

POT Pads

The POT Type Supports are useful for supporting both vertical and horizontal loads as well as for rotating movements. They serve as a union between a structure and its support and must allow by elastic deformation.

The composite POT support is made of high quality vulcanized neoprene rubber according to ASHTO, ASTM, Nevi-12.

This pad has as reinforcement inner plates of Steel manufactured under Standard ASTM A36

– High quality vulcanized neoprene rubber plate according to ASSHTO standard
– High quality teflon plate
– Steel Plates Standard ASTM A36
– Stainless steel inner plate

The composite POT support is made of high quality vulcanized neoprene rubber according to ASHTO, ASTM, Nevi-12.

This pad has as reinforcement inner plates of Steel manufactured under Standard ASTM A36

– High quality vulcanized neoprene rubber plate according to ASSHTO standard
– High quality teflon plate
– Steel Plates Standard ASTM A36
– Stainless steel inner plate

Projects

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Structural Pads Products