Unsupported AASHTO Rubber Bearing Pads
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AASHTO Bearing Pads
Available in Natural Rubber and Neoprene formulations, in rolls 36” and 48” wide in thicknesses up to 1” and in molded forms 36” and 48” widths in lengths up to 30’ (longer lengths available). For use where conformance to ASSHTO specifications is required. Note that some states have additional requirements – when ordering identify all requirements or submit individual state specifications. Custom shapes and sizes are available on a special order basis. Excellent load bearing resistance. Usually specified for bridge and building construction.
Neoprene Unsupported AASHTO Bearing Pads
Available in lengths up to 30’. Longer lengths available, please call for quote. Also available in 36" x 36" and 48" x 48" slabs.
Finish: Smooth
| 50 |
1/8 - 1 |
36, 48 |
2250 |
400 |
-40°F to +170°F |
2.55 lb |
Hardness: ASTM D 2240
Tensile: ASTM D 412
Elongation: ASTM D 412 |
| 60 |
1/8 - 1 |
36, 48 |
2250 |
350 |
-40°F to +170°F |
2.59 lb |
Hardness: ASTM D 2240
Tensile: ASTM D 412
Elongation: ASTM D 412 |
| 70 |
1/8 - 1 |
36, 48 |
2250 |
300 |
-40°F to +170°F |
2.61 lb |
Hardness: ASTM D 2240
Tensile: ASTM D 412
Elongation: ASTM D 412 |
*Physicals presented are typical values.
Certain states specify requirements other than standard AASHTO specifications. When ordering, identify all requirements or submit individual state specifications. Above meets the Standard Specifications for Highway Bridges, adopted by the American Association of State Highway and Transportation Officials. AASHTO M251 Unsupported Neoprene Bearing Pads are also available.
Change in durometer hardness,
max. points |
15 |
15 |
15 |
Change in tensile,
max. % |
-15 |
-15 |
-15 |
Change in ultimate elongation,
max. % |
-40 |
-40 |
-40 |
| 22 hours at 212°F, max. % |
35 |
35 |
35 |
100 pphm ozone in air by volume,
20% strain, 100°F ± 2°F 100 hours
mounting procedure D518,
Procedure A |
no cracks |
no cracks |
no cracks |
Grade 3
at -40°F |
no failure |
no failure |
no failure |
Grade 3
at -40°F |
Stiffness at test time shall not exceed 4 times
the stiffness measured at 73°F
|
Grade 3
14 days at -15°F |
Stiffness at test time and temperature shall not exceed
4 times the stiffness measured at 73°F with no time delay
|
Natural Rubber Unsupported AASHTO Bearing Pads
Natural Rubber Unsupported AASHTO Bearing Pads are available in Grade 3 and Grade 4 in lengths up to 30'. Longer lengths available, please call for quote. Also available in 36" x 36" and 48" x 48" slabs. Black in Color.
Finish: Smooth
| 50 |
1/4 - 1 |
36, 48 |
2250 |
450 |
Grade 3:
-40°F to +170°F
Grade 4:
-50°F to +170°F |
0.5 - 11.8 lb |
Hardness: ASTM D 2240
Tensile: ASTM D 412
Elongation: ASTM D 412 |
| 60 |
1/4 - 1 |
36, 48 |
2250 |
400 |
Grade 3:
-40°F to +170°F
Grade 4:
-50°F to +170°F |
0.5 - 12 lb |
Hardness: ASTM D 2240
Tensile: ASTM D 412
Elongation: ASTM D 412 |
| 70 |
1/4 - 1 |
36, 48 |
2250 |
300 |
Grade 3:
-40°F to +170°F
Grade 4:
-50°F to +170°F |
0.5 - 12.2 lb |
Hardness: ASTM D 2240
Tensile: ASTM D 412
Elongation: ASTM D 412 |
*Physicals presented are typical values.
Certain states specify requirements other than standard AASHTO specifications. When ordering, identify all requirements or submit individual state specifications. Above meets the Standard Specifications for Highway Bridges, adopted by the American Association of State Highway and Transportation Officials. AASHTO M251 Unsupported Neoprene Bearing Pads are also available.
Change in durometer hardness,
max. points |
10 |
10 |
10 |
Change in tensile,
max. % |
-25 |
-25 |
-25 |
Change in ultimate elongation,
max. % |
-25 |
-25 |
-25 |
| 22 hours at 158°F, max. % |
25 |
25 |
25 |
25 pphm ozone in air by volume,
20% strain, 100°F ± 2°F 48 hours
mounting procedure D518,
Procedure A |
no cracks |
no cracks |
no cracks |
Grade 3
at -40°F |
Grade 4
at -40°F |
no failure |
no failure |
no failure |
Grade 3
at -40°F |
Grade 4
at -40°F |
Stiffness at test time shall not exceed 4 times
the stiffness measured at 73°F |
Grade 3
14 days at -15°F |
Grade 4
14 days at -15°F |
Stiffness at test time and temperature shall not exceed
4 times the stiffness measured at 73°F with no time delay |
