A Marshall Breaking Head is a specialized apparatus used in asphalt testing to evaluate the stability and flow characteristics of hot-mix asphalt specimens. It is an integral component of the Marshall Stability Test, a widely adopted method for designing and assessing asphalt mixtures.
During the Marshall Stability Test, the compacted asphalt specimen is placed within the breaking head assembly. A load is then applied at a controlled rate using a load frame, and the breaking head facilitates the uniform distribution of this load across the specimen.