Marshal Test Apparatus
The stability test using Marshal Apparatus is a widely used and reliable testing method employed by highway departments, contractors, engineers, testing laboratories, and government agencies. Its purpose is to measure the resistance to plastic flow of cylindrical specimens of bituminous paving mixture loaded on the lateral surface.
This test is designed to be used with hot mixtures that contain asphalt or tar and aggregate up to 25.4mm maximum size. The apparatus consists of a Marshal load frame with a 50kN capacity and a speed of 50.8mm/min, a compaction mould, compaction hammer and pedestal, a 25mm dial gauge, and a proving ring with a 25kN capacity. This setup ensures that the test results are accurate and repeatable, providing valuable insights into the quality and durability of asphalt paving mixtures.