What is the objective of the shaking motion in a mechanical shaker?

The objective of the shaking motion in a mechanical shaker is to segregate particles. This process is crucial in aggregate testing, where the goal is to ensure a uniform distribution of particle sizes within a sample. When the shaker operates, the vibrations cause different-sized particles to move and separate based on their dimensions and weight. Larger, heavier particles tend to settle to the bottom, while smaller, lighter particles rise to the top, allowing for an effective classification of the sample.

This segregation is essential for accurate analysis and helps technicians understand the gradation of the aggregates being tested. A thorough understanding of the particle size distribution is vital for quality control in construction materials, ensuring that the aggregates used in concrete and asphalt mix meet the required specifications. Therefore, the shaking motion directly contributes to achieving the desired outcomes in aggregate testing by facilitating the separation of particles.