Final answer:
The push through test requires a fixture that includes a test frame capable of applying a controlled load and support fixtures to hold the specimen. It must comply with specific test standards and typically incorporates hydraulic or mechanical components and displacement measurement devices.
Step-by-step explanation:
The push through test, also known as the push-out test, is a type of structural testing in civil engineering related to the assessment of shear strength in composite construction, such as steel-concrete composite beams. The required fixture for this test typically includes a test frame, which must be capable of applying a controlled load to the specimen, and support fixtures that hold the specimen in place to measure shear strength and deformation characteristics.
Most importantly, the test fixture must be designed to align with the specific requirements of the test standard being followed, such as ASTM or ISO. The fixture must withstand the expected load without experiencing any deformation or failure, which might otherwise affect the test results. Additionally, the fixture often includes hydraulic or mechanical components to apply the load, and displacement measurement devices such as dial gauges or LVDTs (Linear Variable Differential Transformers) to monitor the specimen's response during the test.