What materials can be spread by a grader to stabilize a road surface?

The selection of geotextiles and aggregate as materials that can be spread by a grader for road surface stabilization is accurate due to their effectiveness in enhancing the structural integrity and durability of the road. Geotextiles are used in civil engineering to provide separation and stabilization by allowing water flow while preventing the mixing of soil and aggregate layers. This helps support load-bearing capabilities and overall road performance.

Aggregates, on the other hand, provide the necessary structural support to the road surface. They can enhance drainage and prevent erosion while creating a stable foundation. When combined, geotextiles and aggregates work together to improve the longevity and maintenance of the road surface, making them an excellent choice for road stabilization in various conditions.

In contrast, while sand and gravel can also stabilize surfaces, they are not the only materials used—not addressing the versatility offered by other stabilizing options. Concrete and asphalt are typically used for paving rather than for spreading by graders for stabilization purposes. Lastly, plastic and rubber are not conventional materials for road stabilization; they may have niche applications but do not serve the broad functional role required in this context.