Bridge Bearings &Expansion Joints Tests

Dear Engineers
Iwould like to draw your attention for the tests regarding the Bearings &Expansion Joints of bridges as below for your information :
1-BEARINGS
The elastomeric bearing must be evaluated as per standards such as IP,ASTM,DIN,BS,.....etc.
ASTM4014 for testing of bearings
3 samples of bearings shall be taken for the lot for testing for alot less than 50.If the lot exceed 50 then one additional bearing shall be taken for testing .
TESTS:
1-Bearing compression tests.
2-Elastomeric material tests.
a- Physical properties
-hardness
-tensile test
-ultimate elongation
b- Heat resistance
c-Compression set
d-Ozone cracking
c-Adhesion ( Fabric laminates,Steel laminates ,Adhesive )

2- EXPANSION JOINTS

The expansion joint assemblies components are evaluated to know thier fatigue resistance,braking force,cycle motionbehavior,durability performance,water tightness...etc this will ensure better field performance of expansion joints throughout the service life .
The expansion joints must be evaluated as per the standards below :
a-Tests for elastomeric
1-Hardness ASTMD2240
2-Tensile strength ASTMD412
3-Elongation at break ASTM412
4-Adhesion rubber-steel ASTM429
5-Low temperture brittlness ASTMD746
6-Ozone resistance ASTMD114
7-Resistance to permanent set ASTMD395
b-Tests for steel
Steel components manufactured to DIN17.100 Type ST37-2,ASTM Type A36 .

Best Regards

ENGINEER FARIS ALMAHDAWI