EN-13230-2 Railway Concrete sleepers and bearers testing machine (fatigue, bending, Ultimate strength) , EN-13230-2 Railway applications - Track - Concrete sleepers and bearers - Part 2: Prestressed monoblock sleepers;
The test stipulated:
1, Mechanical performance test:
Static load test/crack resistance test: Verify the ability of the sleeper to not crack under the specified static load or meet specific crack resistance requirements.
Ultimate strength test/failure test: Test the maximum bearing capacity of the sleeper until failure to verify its safety reserve.
Fatigue test: Simulate the durability and fatigue resistance of rail sleepers under long-term repeated train loads.
The above-mentioned mechanical performance tests (static load, ultimate limit, fatigue) are conducted on the finished rail sleepers to comprehensively verify the effectiveness of the prestressing system and its transmission and protection status in concrete. Pre stress control and monitoring during the manufacturing process are also key requirements 3.
2, Concrete performance verification:
The mix design and compressive strength requirements of concrete usually refer to the general standards for concrete (such as EN 2065), and are verified through specimen testing during the production process of sleepers. The mechanical performance test of the finished rail sleeper also indirectly reflects the quality of the concrete.
