What is the purpose of the grader's scarifier?

The purpose of the grader's scarifier is primarily to break up and loosen hard-packed material. This tool is essential for preparing the ground before grading because it helps to reduce compaction, making it easier for the grader blades to create a uniform surface. When the scarifier penetrates the hard ground, it disrupts the compacted layers, which allows for better mixing of materials and aids in the subsequent grading process. By loosening the material, it also promotes better drainage and enhances the overall effectiveness of the grading operation.

While improving traction, smoothing the road surface, and maintaining blade sharpness are important aspects of road maintenance and grader operation, they do not specifically define the primary role of the scarifier. The scarifier's specific design and purpose are intended to address tough, compacted surfaces, which is crucial for achieving efficient and effective grading.