Question

What is refusal density on road asphalt concrete

Answer 1

Refusal density is a term used in road construction to measure the resistance of asphalt concrete to deformation.

It is determined through the gyratory compaction test and indicates the long-term durability of road surfaces.

Step-by-step explanation:

Refusal density is important because excessive deformation can lead to road damage and decrease the lifespan of the road surface.

Refusal density is typically measured using a test called the gyratory compaction test. In this test, a cylindrical mold is filled with the asphalt mixture and subjected to a specific compaction process. The resulting compacted sample is then measured for its density and compared to a specified target value.

High refusal density indicates a higher resistance to deformation, which means that the road pavement is less likely to rut or develop potholes over time. It is an important factor in ensuring the durability and longevity of road surfaces.